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Bromberg JS, Bunnapradist S, Samaniego-Picota M, Anand S, Stites E, Gauthier P, Demko Z, Prewett A, Armer-Cabral M, Marshall K, Kaur N, Bloom MS, Tabriziani H, Bhorade S, Cooper M. Elevation of Donor-derived Cell-free DNA Before Biopsy-proven Rejection in Kidney Transplant. Transplantation 2024:00007890-990000000-00724. [PMID: 38595232 DOI: 10.1097/tp.0000000000005007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
BACKGROUND Standard-of-care biomarkers for renal allograft rejection are lagging indicators, signaling existing organ injury. This precludes early intervention, when immunological cascades leading to rejection are most susceptible. Donor-derived cell-free DNA (dd-cfDNA) shows promise as an early indicator of rejection, allowing earlier and possibly more effective treatment. This analysis was designed to assess this promise using real-world dd-cfDNA testing evidence. METHODS This retrospective analysis of the prospective, observational ProActive registry study (NCT04091984) assessed dd-cfDNA and serum creatinine levels before biopsy in 424 patients with ≥1 dd-cfDNA test (n = 1013) in the 6 mo before biopsy. RESULTS Of 4667 enrolled patients, 1631 patients had ≥18 mo of follow-up data, of which 424 had a biopsy and were included in this analysis. Twenty-six biopsies showed antibody-mediated rejection (ABMR), 62 showed T cell-mediated rejection, and 336 showed nonrejection; each from a unique patient. dd-cfDNA fractions were significantly elevated 5 mo before ABMR biopsies, and 2 mo before T cell-mediated rejection biopsies, compared with nonrejection biopsies. In contrast, serum creatinine did not discriminate between rejection and nonrejection in advance, or concurrent with biopsy. Among patients with nonrejection biopsies, estimated glomerular filtration rate was significantly lower in cases with ≥2 increased dd-cfDNA results (≥1%), compared with those with 0 or 1 increased dd-cfDNA result. CONCLUSIONS These data indicate that dd-cfDNA is an early indicator of biopsy-proven rejection, especially ABMR, suggesting a greater role for dd-cfDNA in surveillance to identify patients at high risk of ongoing or future rejection, thus requiring closer monitoring, biopsy, or other management changes.
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Affiliation(s)
- Jonathan S Bromberg
- Department of Surgery, University of Maryland, School of Medicine, Baltimore, MD
| | | | | | | | - Erik Stites
- School of Medicine, University of Colorado Anschutz Medical Campus, Denver, CO
| | | | | | | | | | | | | | | | | | | | - Matthew Cooper
- Department of Surgery, Medical College of Wisconsin, Milwaukee, WI
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2
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Gordon EJ, Gacki-Smith J, Gooden MJ, Waite P, Yacat R, Abubakari ZR, Duquette D, Agrawal A, Friedewald J, Savage SK, Cooper M, Gilbert A, Muhammad LN, Wicklund C. Development of a culturally targeted chatbot to inform living kidney donor candidates of African ancestry about APOL1 genetic testing: a mixed methods study. J Community Genet 2024; 15:205-216. [PMID: 38349598 PMCID: PMC11031529 DOI: 10.1007/s12687-024-00698-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
Clinical chatbots are increasingly used to help integrate genetic testing into clinical contexts, but no chatbot exists for Apolipoprotein L1 (APOL1) genetic testing of living kidney donor (LKD) candidates of African ancestry. Our study aimed to culturally adapt and assess perceptions of the Gia® chatbot to help integrate APOL1 testing into LKD evaluation. Ten focus groups and post-focus group surveys were conducted with 54 LKDs, community members, and kidney transplant recipients of African ancestry. Data were analyzed through thematic analysis and descriptive statistics. Key themes about making Gia culturally targeted included ensuring: (1) transparency by providing Black LKDs' testimonials, explaining patient privacy and confidentiality protections, and explaining how genetic testing can help LKD evaluation; (2) content is informative by educating Black LKDs about APOL1 testing instead of aiming to convince them to undergo testing, presenting statistics, and describing how genetic discrimination is legally prevented; and (3) content avoids stigma about living donation in the Black community. Most agreed Gia was neutral and unbiased (82%), trustworthy (82%), and words, phrases, and expressions were familiar to the intended audience (85%). Our culturally adapted APOL1 Gia chatbot was well regarded. Future research should assess how this chatbot could supplement provider discussion prior to genetic testing to scale APOL1 counseling and testing for LKD candidate clinical evaluation.
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Affiliation(s)
- Elisa J Gordon
- Department of Surgery, Center for Biomedical Ethics and Society, Vanderbilt University Medical Center, 1161 21St Avenue South, D-4314 Medical Center North Nashville, Nashville, TN, 37232-2730, USA.
| | - Jessica Gacki-Smith
- Center for Health Services and Outcomes Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Matthew J Gooden
- Center for Health Services and Outcomes Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Preeya Waite
- Center for Health Services and Outcomes Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Rochell Yacat
- Medstar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, USA
| | - Zenab R Abubakari
- Medstar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, USA
| | - Debra Duquette
- Medicine, Cardiology Division, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Akansha Agrawal
- Division of Nephrology and Hypertension, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - John Friedewald
- Division of Nephrology and Hypertension, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | | | - Matthew Cooper
- Froedtert Hospital Center for Advanced Care, Froedtert Memorial Lutheran Hospital Children's Hospital of Wisconsin Medical College of Wisconsin, Milwaukee, WI, USA
- Children's Hospital of Wisconsin, Milwaukee, WI, USA
- Medical College of Wisconsin, Milwaukee, WI, USA
- Froedtert Hospital Center for Advanced Care, Milwaukee, WI, USA
| | - Alexander Gilbert
- Medstar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, USA
| | - Lutfiyya N Muhammad
- Department of Preventive Medicine, Division of Biostatistics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Catherine Wicklund
- Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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3
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Parsons RF, Lentine KL, Doshi M, Dunn TB, Forbes R, Fridell JA, Jesse MT, Pavlakis M, Sawinski D, Singh N, Axelrod DA, Cooper M. Generating strategies for a national comeback in pancreas transplantation: A Delphi survey and US conference report. Am J Transplant 2024:S1600-6135(24)00206-5. [PMID: 38499089 DOI: 10.1016/j.ajt.2024.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 02/19/2024] [Accepted: 03/09/2024] [Indexed: 03/20/2024]
Abstract
In the United States, potential transplant candidates with insulin-dependent diabetes mellitus are inconsistently offered pancreas transplantation (PTx), contributing to a dramatic decline in pancreas allograft utilization over the past 2 decades. The American Society of Transplantation organized a workshop to identify barriers inhibiting PTx and to develop strategies for a national comeback. The 2-day workshop focused on 4 main topics: (1) referral/candidate selection, (2) organ recovery/utilization, (3) program performance/patient outcomes, and (4) enhanced education/research. Topics were explored through expert presentations, patient testimonials, breakout sessions, and strategic planning, including the identification of tasks for immediate focus. Additionally, a modified-Delphi survey was conducted among workshop members to develop and rate the importance of barriers, and the impact and feasibility of workgroup-identified improvement strategies. The panelists identified 16 barriers to progress and 44 strategies for consideration. The steps for a national comeback in PTx involve greater emphasis on efficient referral and candidate selection, better donor pancreas utilization practices, eliminating financial barriers to procurement and transplant, improving collaboration between transplant and diabetes societies and professionals, and increasing focus on PTx training, education, and research. Partnership between national societies, patient advocacy groups, and professionals will be essential to realizing this critical agenda.
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Affiliation(s)
| | - Krista L Lentine
- Saint Louis University Transplant Center, SSM Health Saint Louis University Hospital, St. Louis, Missouri, USA.
| | - Mona Doshi
- University of Michigan, Ann Arbor, Michigan, USA
| | - Ty B Dunn
- Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | | | | | | | - Martha Pavlakis
- Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | | | - Neeraj Singh
- John C. McDonald Regional Transplant Center, Shreveport, Louisiana, USA
| | - David A Axelrod
- University of Iowa Organ Transplant Center, Iowa City, Iowa, USA
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4
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Singh N, Lentine KL, Fleetwood VA, Woodside KJ, Odorico J, Axelrod D, Alhamad T, Maher K, Xiao H, Fridell J, Kukla A, Pavlakis M, Shokouh-Amiri HM, Zibari G, Cooper M, Parsons RF. Indications, Techniques, and Barriers for Pancreas Transplant Biopsy: A Consensus Perspective From a Survey of US Centers. Transplantation 2024:00007890-990000000-00688. [PMID: 38467588 DOI: 10.1097/tp.0000000000004960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
BACKGROUND Pancreas transplant biopsy practices for the diagnosis of rejection or other pathologies are not well described. METHODS We conducted a survey of staff at US pancreas transplant programs (March 22, 2022, to August 22, 2022) to assess current program practices and perceptions about the utility and challenges in the performance and interpretation of pancreas allograft biopsies. RESULTS Respondents represented 65% (76/117) of active adult pancreas transplant programs, capturing 66% of recent pancreas transplant volume in the United States. Participants were most often nephrologists (52%), followed by surgeons (46%), and other staff (4%). Pancreas allograft biopsies were performed mostly by interventional radiologists (74%), followed by surgeons (11%), nephrologists (8%), and gastroenterologists (1%). Limitations in the radiologist's or biopsy performer's comfort level or expertise to safely perform a biopsy, or to obtain sufficient/adequate samples were the two most common challenges with pancreas transplant biopsies. Pancreas transplant biopsies were read by local pathologists at a majority (86%) of centers. Challenges reported with pancreas biopsy interpretation included poor reliability, lack of reporting of C4d staining, lack of reporting of rejection grading, and inconclusive interpretation of the biopsy. Staff at a third of responding programs (34%) stated that they rarely or never perform pancreas allograft biopsies and treat presumed rejection empirically. CONCLUSIONS This national survey identified significant variation in clinical practices related to pancreas allograft biopsies and potential barriers to pancreas transplant utilization across the United States. Consideration of strategies to improve program experience with percutaneous pancreas biopsy and to support optimal management of pancreas allograft rejection informed by histology is warranted.
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Affiliation(s)
| | - Krista L Lentine
- Saint Louis University Transplant Center, SSM Health Saint Louis University Hospital, Saint Louis, MO
| | - Vidya A Fleetwood
- Saint Louis University Transplant Center, SSM Health Saint Louis University Hospital, Saint Louis, MO
| | | | | | | | - Tarek Alhamad
- Washington University School of Medicine, St. Louis, MO
| | - Kennan Maher
- Saint Louis University Transplant Center, SSM Health Saint Louis University Hospital, Saint Louis, MO
| | - Huiling Xiao
- Saint Louis University Transplant Center, SSM Health Saint Louis University Hospital, Saint Louis, MO
| | | | | | | | | | - Gazi Zibari
- Willis-Knighton Health System, Shreveport, LA
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5
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Wiseman A, Alhamad T, Alloway RR, Concepcion BP, Cooper M, Formica R, Klein CL, Kumar V, Leca N, Shihab F, Taber DJ, Mulnick S, Bushnell DM, Hadi M, Bunnapradist S. Use of LCP-Tacrolimus (LCPT) in Kidney Transplantation: A Delphi Consensus Survey of Expert Clinicians. Ann Transplant 2024; 29:e943498. [PMID: 38526543 PMCID: PMC10944009 DOI: 10.12659/aot.943498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/06/2024] [Indexed: 03/26/2024] Open
Abstract
BACKGROUND LCPT (Envarsus XR®) is a common once-daily, extended-release oral tacrolimus formulation used in kidney transplantation. However, there are minimal evidence-based recommendations regarding optimal dosing and treatment in the de novo and conversion settings. MATERIAL AND METHODS Using Delphi methodology, 12 kidney transplantation experts with LCPT experience reviewed available data to determine potential consensus topics. Key statements regarding LCPT use were generated and disseminated to the panel in an online Delphi survey. Statements were either accepted, revised, or rejected based on the level of consensus, perceived strength of evidence, and alignment with clinical practice. Consensus was defined a priori as ≥75% agreement. RESULTS Twenty-three statements were generated: 14 focused on de novo LCPT use and 9 on general administration or LCPT conversion use. After 2 rounds, consensus was achieved for 11/14 of the former and 7/9 of the latter statements. In a de novo setting, LCPT was recognized as a first-line option based on its safety and efficacy compared to immediate-release tacrolimus. In particular, African Americans and rapid metabolizer populations were identified as preferred for first-line LCPT therapy. In a conversion setting, full consensus was achieved for converting to LCPT to address neurological adverse effects related to immediate-release tacrolimus and for the time required (approximately 7 days) for steady-state LCPT trough levels to be reached. CONCLUSIONS When randomized clinical trials do not replicate current utilization patterns, the Delphi process can successfully generate consensus statements by expert clinicians to inform clinical decision-making for the use of LCPT in kidney transplant recipients.
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Affiliation(s)
- Alexander Wiseman
- AdventHealth Transplant Institute, Porter Adventist Hospital, Denver, CO, USA
| | - Tarek Alhamad
- Division of Nephrology, Washington University School of Medicine in St. Louis, Saint Louis, MO, USA
| | - Rita R. Alloway
- Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | | | - Matthew Cooper
- Transplant Center – Center for Advanced Care – Froedtert Hospital, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Richard Formica
- Yale New Haven Transplantation Center, Yale University School of Medicine, New Haven, CT, USA
| | - Christina L. Klein
- Department of Transplant Nephrology, Piedmont Transplant Institute, Atlanta, GA, USA
| | - Vineeta Kumar
- Renal Transplant Program, University of Alabama at Birmingham Hospital, Birmingham, AL, USA
| | - Nicolae Leca
- Kidney Care and Transplantation Services, University of Washington, Seattle, WA, USA
| | - Fuad Shihab
- Kidney and Liver Clinic, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - David J. Taber
- Transplant Immunobiology Laboratory, Medical University of South Carolina, Charleston, SC, USA
| | - Sarah Mulnick
- Patient-Centered Research, Evidera, Bethesda, MD, USA
| | | | - Monica Hadi
- Patient-Centered Research, Evidera, London, United Kingdom
| | - Suphamai Bunnapradist
- Division of Nephrology and Department of Medicine, David Geffen School of Medicine, Los Angeles, CA, USA
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6
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Drachenberg CB, Buettner-Herold M, Aguiar PV, Horsfield C, Mikhailov AV, Papadimitriou JC, Seshan SV, Perosa M, Boggi U, Uva P, Rickels M, Grzyb K, Arend L, Cuatrecasas M, Toniolo MF, Farris AB, Renaudin K, Zhang L, Roufousse C, Gruessner A, Gruessner R, Kandaswamy R, White S, Burke G, Cantarovich D, Parsons RF, Cooper M, Kudva YC, Kukla A, Haririan A, Parajuli S, Merino-Torres JF, Argente-Pla M, Meier R, Dunn T, Ugarte R, Rao JS, Vistoli F, Stratta R, Odorico J. Banff 2022 pancreas transplantation multidisciplinary report: Refinement of guidelines for T cell-mediated rejection, antibody-mediated rejection and islet pathology. Assessment of duodenal cuff biopsies and noninvasive diagnostic methods. Am J Transplant 2024; 24:362-379. [PMID: 37871799 DOI: 10.1016/j.ajt.2023.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/02/2023] [Accepted: 10/11/2023] [Indexed: 10/25/2023]
Abstract
The Banff pancreas working schema for diagnosis and grading of rejection is widely used for treatment guidance and risk stratification in centers that perform pancreas allograft biopsies. Since the last update, various studies have provided additional insight regarding the application of the schema and enhanced our understanding of additional clinicopathologic entities. This update aims to clarify terminology and lesion description for T cell-mediated and antibody-mediated allograft rejections, in both active and chronic forms. In addition, morphologic and immunohistochemical tools are described to help distinguish rejection from nonrejection pathologies. For the first time, a clinicopathologic approach to islet pathology in the early and late posttransplant periods is discussed. This update also includes a discussion and recommendations on the utilization of endoscopic duodenal donor cuff biopsies as surrogates for pancreas biopsies in various clinical settings. Finally, an analysis and recommendations on the use of donor-derived cell-free DNA for monitoring pancreas graft recipients are provided. This multidisciplinary effort assesses the current role of pancreas allograft biopsies and offers practical guidelines that can be helpful to pancreas transplant practitioners as well as experienced pathologists and pathologists in training.
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Affiliation(s)
| | - Maike Buettner-Herold
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg (FAU) and University Hospital, Erlangen, Germany
| | | | - Catherine Horsfield
- Department of Histopathology/Cytology, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom
| | - Alexei V Mikhailov
- Department of Pathology, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina, USA
| | - John C Papadimitriou
- Department of Pathology, University of Maryland School of Medicine, Maryland, USA
| | - Surya V Seshan
- Division of Renal Pathology, Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, Cornell University, New York, New York, USA
| | - Marcelo Perosa
- Beneficência Portuguesa and Bandeirantes Hospital of São Paulo, São Paulo, Brazil
| | - Ugo Boggi
- Department of Surgery, University of Pisa, Pisa, The province of Pisa, Italy
| | - Pablo Uva
- Kidney/Pancreas Transplant Program, Instituto de Trasplantes y Alta Complejidad (ITAC - Nephrology), Buenos Aires, Argentina
| | - Michael Rickels
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Philadelphia, USA
| | - Krzyztof Grzyb
- Department of Pathology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Lois Arend
- Department of Pathology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | | | | | - Alton B Farris
- Department of Pathology, Emory University School of Medicine, Atlanta, Georgia, USA
| | | | - Lizhi Zhang
- Division of Anatomic Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Candice Roufousse
- Department of Immunology and Inflammation, Imperial College of London, London, United Kingdom
| | - Angelika Gruessner
- Department of Nephrology/Medicine, State University of New York, New York, USA
| | - Rainer Gruessner
- Department of Surgery, State University of New York, New York, USA
| | - Raja Kandaswamy
- Division of Solid Organ Transplantation, Department of Surgery, University of Minnesota, Minneapolis, MN, USA
| | - Steven White
- Department of Surgery, Newcastle Upon Tyne NHS Foundation Trust, Newcastle upon Tyne, England, United Kingdom
| | - George Burke
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
| | | | - Ronald F Parsons
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Matthew Cooper
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Yogish C Kudva
- Division of Endocrinology, Diabetes, Metabolism, and Nutrition, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Aleksandra Kukla
- Department of Medicine, Division of Nephrology and Hypertension, Mayo Clinic College of Medicine and Science, Mayo Clinic, Rochester, Minnesota, USA
| | - Abdolreza Haririan
- Department of Medicine, University of Maryland School of Medicine, Maryland, USA
| | - Sandesh Parajuli
- Department of Medicine, UWHealth Transplant Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Juan Francisco Merino-Torres
- Department of Endocrinology and Nutrition, University Hospital La Fe, La Fe Health Research Institute, University of Valencia, Valencia, Spain
| | - Maria Argente-Pla
- University Hospital La Fe, Health Research Institute La Fe, Valencia, Spain
| | - Raphael Meier
- Department of Surgery, University of Maryland School of Medicine, Maryland, USA
| | - Ty Dunn
- Division of Transplantation, Department of Surgery, Penn Transplant Institute, University of Pennsylvania, Pennsylvania, Philadelphia, USA
| | - Richard Ugarte
- Department of Medicine, University of Maryland School of Medicine, Maryland, USA
| | - Joseph Sushil Rao
- Division of Solid Organ Transplantation, Department of Surgery, University of Minnesota, Minneapolis, MN, USA; Schulze Diabetes Institute, Department of Surgery, University of Minnesota, Minneapolis, MN, USA
| | - Fabio Vistoli
- Department of Surgery, University of Pisa, Pisa, The province of Pisa, Italy
| | - Robert Stratta
- Department of Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina, USA
| | - Jon Odorico
- Division of Transplantation, Department of Surgery, UWHealth Transplant Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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7
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Cooper M, Wiseman AC, Doshi MD, Hall IE, Parsons RF, Pastan S, Reddy KS, Schold JD, Mohan S, Hippen BE. Understanding Delayed Graft Function to Improve Organ Utilization and Patient Outcomes: Report of a Scientific Workshop Sponsored by the National Kidney Foundation. Am J Kidney Dis 2024; 83:360-369. [PMID: 37844725 DOI: 10.1053/j.ajkd.2023.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/22/2023] [Accepted: 08/26/2023] [Indexed: 10/18/2023]
Abstract
Delayed graft function (DGF) is a common complication after kidney transplant. Despite extensive literature on the topic, the extant definition of DGF has not been conducive to advancing the scientific understanding of the influences and mechanisms contributing to its onset, duration, resolution, or long-term prognostic implications. In 2022, the National Kidney Foundation sponsored a multidisciplinary scientific workshop to comprehensively review the current state of knowledge about the diagnosis, therapy, and management of DGF and conducted a survey of relevant stakeholders on topics of clinical and regulatory interest. In this Special Report, we propose and defend a novel taxonomy for the clinical and research definitions of DGF, address key regulatory and clinical practice issues surrounding DGF, review the current state of therapies to reduce and/or attenuate DGF, offer considerations for clinical practice related to the outpatient management of DGF, and outline a prospective research and policy agenda.
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Affiliation(s)
- Matthew Cooper
- Department of Surgery, Division of Transplantation, Medical College of Wisconsin, Milwaukee, WI.
| | | | - Mona D Doshi
- Department of Medicine, Division of Nephrology, University of Michigan, Ann Arbor, Michigan
| | - Isaac E Hall
- Division of Nephrology & Hypertension, Department of Internal Medicine, University of Utah Spencer Fox Eccles School of Medicine, Salt Lake City, Utah
| | | | - Stephen Pastan
- Department of Medicine, Renal Division, Emory University School of Medicine, Atlanta, Georgia
| | - Kunam S Reddy
- Division of Transplant Surgery, Mayo Clinic Arizona, Phoenix, Arizona
| | - Jesse D Schold
- Departments of Surgery and Epidemiology, University of Colorado Anschutz Medical College, Aurora, Colorado
| | - Sumit Mohan
- Division of Nephrology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
| | - Benjamin E Hippen
- Global Medical Office, Fresenius Medical Care, Charlotte, North Carolina
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8
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Talukdar JR, Cooper M, Lyutvyn L, Zeraatkar D, Ali R, Berbrier R, Janes S, Ha V, Darling PB, Xue M, Chu A, Chowdhury F, Harnack HE, Huang L, Malik M, Powless J, Lavergne FV, Zhang X, Ehrlich S, Jenkins DJ, Sievenpiper JL, Banfield L, Mbuagbaw L, de Souza RJ. The effects of inulin-type fructans on cardiovascular disease risk factors: systematic review and meta-analysis of randomized controlled trials. Am J Clin Nutr 2024; 119:496-510. [PMID: 38309832 DOI: 10.1016/j.ajcnut.2023.10.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 10/21/2023] [Accepted: 10/24/2023] [Indexed: 02/05/2024] Open
Abstract
BACKGROUND Inulin-type fructans (ITF) are the leading prebiotics in the market. Available evidence provides conflicting results regarding the beneficial effects of ITF on cardiovascular disease risk factors. OBJECTIVES This study aimed to evaluate the effects of ITF supplementation on cardiovascular disease risk factors in adults. METHODS We searched MEDLINE, EMBASE, Emcare, AMED, CINAHL, and the Cochrane Library databases from inception through May 15, 2022. Eligible randomized controlled trials (RCTs) administered ITF or placebo (for example, control, foods, diets) to adults for ≥2 weeks and reported one or more of the following: low, very-low, or high-density lipoprotein cholesterol (LDL-C, VLDL-C, HDL-C); total cholesterol; apolipoprotein A1 or B; triglycerides; fasting blood glucose; body mass index; body weight; waist circumference; waist-to-hip ratio; systolic or diastolic blood pressure; or hemoglobin A1c. Two reviewers independently and in duplicate screened studies, extracted data, and assessed risk of bias. We pooled data using random-effects model, and assessed the certainty of evidence (CoE) using the Grading of Recommendations, Assessment, Development and Evaluation approach. RESULTS We identified 1767 studies and included 55 RCTs with 2518 participants in meta-analyses. The pooled estimate showed that ITF supplementation reduced LDL-C [mean difference (MD) -0.14 mmol/L, 95% confidence interval (95% CI: -0.24, -0.05), 38 RCTs, 1879 participants, very low CoE], triglycerides (MD -0.06 mmol/L, 95% CI: -0.12, -0.01, 40 RCTs, 1732 participants, low CoE), and body weight (MD -0.97 kg, 95% CI: -1.28, -0.66, 36 RCTs, 1672 participants, low CoE) but little to no significant effect on other cardiovascular disease risk factors. The effects were larger when study duration was ≥6 weeks and in pre-obese and obese participants. CONCLUSION ITF may reduce low-density lipoprotein, triglycerides, and body weight. However, due to low to very low CoE, further well-designed and executed trials are needed to confirm these effects. PROSPERO REGISTRATION NUMBER CRD42019136745.
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Affiliation(s)
- Jhalok Ronjan Talukdar
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Matthew Cooper
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Lyuba Lyutvyn
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Dena Zeraatkar
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Blavatnik Institute, Harvard Medical School, Boston, MA, United States
| | - Rahim Ali
- Faculty of Law, Common Law Section, University of Ottawa, Ottawa, ON, Canada
| | - Rachel Berbrier
- Division of Dermatology, McGill University Health Centre, Montreal, QC, Canada
| | - Sabrina Janes
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada
| | - Vanessa Ha
- School of Medicine, Faculty of Health Sciences, Queen's University, Kingston, ON, Canada
| | - Pauline B Darling
- School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Mike Xue
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Alexandro Chu
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Fariha Chowdhury
- Department of Rehabilitation Science(s), McMaster University, Hamilton, ON, Canada
| | - Hope E Harnack
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, ON, Canada
| | - Louise Huang
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Mikail Malik
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Jacqui Powless
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Florence V Lavergne
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, ON, Canada
| | - Xuehong Zhang
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Shelley Ehrlich
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - David Ja Jenkins
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, ON, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada; Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Department of Medicine, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Toronto 3D Knowledge Synthesis and Clinical Trials Unit, St. Michael's Hospital, Toronto, ON, Canada; Division of Endocrinology and Metabolism, Department of Medicine, St. Michael's Hospital, Toronto, ON, Canada
| | - John L Sievenpiper
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, ON, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada; Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Department of Medicine, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Toronto 3D Knowledge Synthesis and Clinical Trials Unit, St. Michael's Hospital, Toronto, ON, Canada; Division of Endocrinology and Metabolism, Department of Medicine, St. Michael's Hospital, Toronto, ON, Canada
| | - Laura Banfield
- Health Sciences Library, McMaster University, Hamilton, ON, Canada; Global Health Graduate Program, McMaster University, Hamilton, ON, Canada
| | - Lawrence Mbuagbaw
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Department of Anesthesia, McMaster University, Hamilton, ON, Canada; Department of Pediatrics, McMaster University, Hamilton, ON, Canada; Biostatistics Unit, Father Sean O'Sullivan Research Centre, St Joseph's Healthcare, Hamilton, ON, Canada; Centre for Development of Best Practices in Health (CDBPH), Yaoundé Central Hospital, Yaoundé, Cameroon; Department of Global Health, Stellenbosch University, Cape Town, South Africa
| | - Russell J de Souza
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Toronto 3D Knowledge Synthesis and Clinical Trials Unit, St. Michael's Hospital, Toronto, ON, Canada; Global Health Graduate Program, McMaster University, Hamilton, ON, Canada; Department of Pediatrics, McMaster University, Hamilton, ON, Canada; Population Health Research Institute, Hamilton Health Sciences Corporation, Hamilton, ON, Canada.
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9
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Jadlowiec CC, Thongprayoon C, Tangpanithandee S, Punukollu R, Leeaphorn N, Cooper M, Cheungpasitporn W. Re-assessing prolonged cold ischemia time in kidney transplantation through machine learning consensus clustering. Clin Transplant 2024; 38:e15201. [PMID: 38041480 DOI: 10.1111/ctr.15201] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/13/2023] [Accepted: 11/16/2023] [Indexed: 12/03/2023]
Abstract
BACKGROUND We aimed to cluster deceased donor kidney transplant recipients with prolonged cold ischemia time (CIT) using an unsupervised machine learning approach. METHODS We performed consensus cluster analysis on 11 615 deceased donor kidney transplant patients with CIT exceeding 24 h using OPTN/UNOS data from 2015 to 2019. Cluster characteristics of clinical significance were identified, and post-transplant outcomes were compared. RESULTS Consensus cluster analysis identified two clinically distinct clusters. Cluster 1 was characterized by young, non-diabetic patients who received kidney transplants from young, non-hypertensive, non-ECD deceased donors with lower KDPI scores. In contrast, the patients in cluster 2 were older and more likely to have diabetes. Cluster 2 recipients were more likely to receive transplants from older donors with a higher KDPI. There was lower use of machine perfusion in Cluster 1 and incrementally longer CIT in Cluster 2. Cluster 2 had a higher incidence of delayed graft function (42% vs. 29%), and lower 1-year patient (95% vs. 98%) and death-censored (95% vs. 97%) graft survival compared to Cluster 1. CONCLUSIONS Unsupervised machine learning characterized deceased donor kidney transplant recipients with prolonged CIT into two clusters with differing outcomes. Although Cluster 1 had more favorable recipient and donor characteristics and better survival, the outcomes observed in Cluster 2 were also satisfactory. Overall, both clusters demonstrated good survival suggesting opportunities for transplant centers to incrementally increase CIT.
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Affiliation(s)
| | - Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Supawit Tangpanithandee
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Napat Leeaphorn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, Florida, USA
| | - Matthew Cooper
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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10
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Loubani M, Cooper M, Silverman R, Bongards C, Griffin L. Surgical site infection outcomes of two different closed incision negative pressure therapy systems in cardiac surgery: Systematic review and meta-analysis. Int Wound J 2024; 21:e14599. [PMID: 38272801 PMCID: PMC10794080 DOI: 10.1111/iwj.14599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 12/08/2023] [Indexed: 01/27/2024] Open
Abstract
Closed incision negative pressure therapy (ciNPT) system use compared with standard of care dressings (SOC) on surgical site infection (SSI) in cardiac surgery was assessed. A systematic literature review was conducted. Risk ratios (RR) and random effects models were used to assess ciNPT with foam dressing (ciNPT-F) or multilayer absorbent dressing (ciNPT-MLA) versus SOC. Health economic models were developed to assess potential per patient cost savings. Eight studies were included in the ciNPT-F analysis and four studies were included in the ciNPT-MLA analysis. For ciNPT-F, a significant reduction in SSI incidence was observed (RR: 0.507, 95% confidence interval [CI]: 0.362, 0.709; p < 0.001). High-risk study analysis reported significant SSI reduction with ciNPT-F use (RR: 0.390, 95% CI: 0.205, 0.741; p = 0.004). For ciNPT-MLA, no significant difference in SSI rates were reported (RR: 0.672, 95% CI: 0.276, 1.635; p = 0.381). Health economic modelling estimated a per patient cost savings of $554 for all patients and $3242 for the high-risk population with ciNPT-F use. Health economic modelling suggests ciNPT-F may provide a cost-effective solution for sternotomy incision management. However, limited high-quality literature exists. More high-quality evidence is needed to fully assess the impact of ciNPT use following cardiac surgery.
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Affiliation(s)
- Mahmoud Loubani
- Department of Cardiothoracic SurgeryCastle Hill Hospital, Hull University Teaching HospitalHullUK
| | - Matthew Cooper
- Medical Solutions Division3M Health CareSt. PaulMinnesotaUSA
| | | | | | - Leah Griffin
- Medical Solutions Division3M Health CareSt. PaulMinnesotaUSA
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11
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Casey MJ, Murakami N, Ong S, Adler JT, Singh N, Murad H, Parajuli S, Concepcion BP, Lubetzky M, Pavlakis M, Woodside KJ, Faravardeh A, Basu A, Tantisattamo E, Aala A, Gruessner AC, Dadhania DM, Lentine KL, Cooper M, Parsons RF, Alhamad T. Medical and Surgical Management of the Failed Pancreas Transplant. Transplant Direct 2024; 10:e1543. [PMID: 38094134 PMCID: PMC10715788 DOI: 10.1097/txd.0000000000001543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 08/09/2023] [Accepted: 08/11/2023] [Indexed: 02/22/2024] Open
Abstract
Despite the continued improvements in pancreas transplant outcomes in recent decades, a subset of recipients experience graft failure and can experience substantial morbidity and mortality. Here, we summarize what is known about the failed pancreas allograft and what factors are important for consideration of retransplantation. The current definition of pancreas allograft failure and its challenges for the transplant community are explored. The impacts of a failed pancreas allograft are presented, including patient survival and resultant morbidities. The signs, symptoms, and medical and surgical management of a failed pancreas allograft are described, whereas the options and consequences of immunosuppression withdrawal are reviewed. Medical and surgical factors necessary for successful retransplant candidacy are detailed with emphasis on how well-selected patients may achieve excellent retransplant outcomes. To achieve substantial medical mitigation and even pancreas retransplantation, patients with a failed pancreas allograft warrant special attention to their residual renal, cardiovascular, and pulmonary function. Future studies of the failed pancreas allograft will require improved reporting of graft failure from transplant centers and continued investigation from experienced centers.
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Affiliation(s)
- Michael J. Casey
- Division of Nephrology, Medical University of South Carolina, Charleston, SC
| | - Naoka Murakami
- Division of Renal Medicine, Brigham and Women Hospital, Boston, MA
| | - Song Ong
- Division of Nephrology, University of Alabama at Birmingham, Birmingham, AL
| | - Joel T. Adler
- Division of Transplant Surgery, University of Texas at Austin, Austin, TX
| | | | - Haris Murad
- Section of Nephrology, The Aga Khan University, Medical College, Pakistan
| | | | | | | | | | | | | | - Arpita Basu
- Division of Renal Medicine, Emory University, Atlanta, GA
| | | | - Amtul Aala
- Division of Nephrology, Beth Israel Deaconess, Boston, MA
| | | | | | - Krista L. Lentine
- Division of Nephrology, SSM Health Saint Louis University Transplant Center, St. Louis, MO
| | - Matthew Cooper
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI
| | - Ronald F. Parsons
- Division of Transplant Surgery, University of Pennsylvania, Philadelphia, PA
| | - Tarek Alhamad
- Division of Nephrology, Washington University in St Louis, St. Louis, MO
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12
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Beeckman D, Cooper M, Greenstein E, Idensohn P, Klein RJ, Kolbig N, LeBlanc K, Milne C, Treadwell T, Weir D, White W. The role community-based healthcare providers play in managing hard-to-heal wounds. Int Wound J 2024; 21:e14402. [PMID: 37715348 PMCID: PMC10788587 DOI: 10.1111/iwj.14402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/17/2023] Open
Abstract
It is common for community-based healthcare providers (CHPs)-many of whom have not received specialised training in wound care-to deliver initial and ongoing management for various wound types and diverse populations. Wounds in any setting can rapidly transition to a stalled, hard-to-heal wound (HTHW) that is not following a normal healing trajectory. Failure to recognise or address issues that cause delayed healing can lead to increased costs, healthcare utilisation and suffering. To encourage early intervention by CHPs, a panel of wound care experts developed actionable evidence-based recommendations for CHPs delineating characteristics and appropriate care in identifying and treating HTHWs. A HTHW is a wound that fails to progress towards healing with standard therapy in an orderly and timely manner and should be referred to a qualified wound care provider (QWCP) for advanced assessment and diagnosis if not healed or reduced in size by 40%-50% within 4 weeks. HTHWs occur in patients with multiple comorbidities, and display increases in exudate, infection, devitalised tissue, maceration or pain, or no change in wound size. CHPs can play an important initial role by seeing the individual's HTHW risk, addressing local infection and providing an optimal wound environment. An easy-to-follow one-page table was developed for the CHP to systematically identify, evaluate and treat HTHWs, incorporating a basic toolkit with items easily obtainable in common office/clinic practice settings. A flow chart using visual HTHW clinical cues is also presented to address CHPs with different learning styles. These tools encourage delivery of appropriate early interventions that can improve overall healthcare efficiency and cost.
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Affiliation(s)
- Dimitri Beeckman
- Skin Integrity Research Group (SKINT), University Centre for Nursing and Midwifery, Department of Public Health and Primary CareGhent UniversityGhentBelgium
- Swedish Centre for Skin and Wound Research (SCENTR), School of Health SciencesÖrebro UniversityÖrebroSweden
| | | | | | | | - Robert J. Klein
- Department of SurgeryUniversity of South Carolina School of MedicineGreenvilleSouth CarolinaUSA
| | | | | | - Catherine Milne
- Connecticut Clinical Nursing Associates, LLCBristolConnecticutUSA
| | | | - Dot Weir
- Saratoga Hospital Center for Wound Healing and Hyperbaric MedicineSaratoga SpringsNew YorkUSA
| | - Wendy White
- Wendy White WoundCareMurwillumbahNew South WalesAustralia
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13
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Rawashdeh B, Kim J, Prasad R, Cooper M. A Global Overview on the Evolution, Debate, and Research Output on Liver Transplant Perfusion Machines. EXP CLIN TRANSPLANT 2024; 22:35-42. [PMID: 38284373 DOI: 10.6002/ect.2023.0180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
OBJECTIVES Machine perfusion of liver grafts has gained popularity for its abilities to preserve liver grafts,reduce cold storage damage, and evaluate graft viability before transplant. However, debate persists regarding the optimal solutions, logistics, and biomarkers for assessing graft quality. To shed light on the lengthy debates surrounding the use of machine perfusion in liver graft preservation,this study utilized bibliometric analysis to evaluate the status and development trends of main research areas. MATERIALS AND METHODS On December 10th, 2022, we conducted a literature search using the Web of Science database to identify articles related to liver machine perfusion. The search included only original studies and reviews and excluded meeting abstracts, letters, notes, editorials, short surveys, book chapters, and errata. We identified the number of citations and encompassed various aspects, such as annual trends, countries, institutions, authors, journals, and key words. We used VOSviewer version 1.6.18 to generate tables and figures. RESULTS After manually removing irrelevant papers, we included 264 articles (89 reviews; remaining were original studies). The articles were cited 5743 times, averaging 21.92 per article. We found that the United Kingdom (n = 76) was the country that produced the most articles,followed by theUnited States (66 articles). Most papers in our search were published in Liver Transplantation (n = 31) and Transplantation (n = 16). CONCLUSIONS Bibliometric analysis provided insights into debates and advancements in liver graft preservation using machine perfusion. The analysis showed leading countries and key research areas in the field. This overview serves as a valuable resource for researchers, offering a foundation for further exploration and guiding future investigations in the field of machine perfusion for liver graft preservation.
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Affiliation(s)
- Badi Rawashdeh
- From the Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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14
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Garg N, Thiessen C, Reese PP, Cooper M, Leishman R, Friedewald J, Sharfuddin AA, Nishio Lucar AG, Dadhania DM, Kumar V, Waterman AD, Mandelbrot DA. Temporal trends in kidney paired donation in the United States: 2006-2021 UNOS/OPTN database analysis. Am J Transplant 2024; 24:46-56. [PMID: 37739347 DOI: 10.1016/j.ajt.2023.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/08/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
Kidney paired donation (KPD) is a major innovation that is changing the landscape of kidney transplantation in the United States. We used the 2006-2021 United Network for Organ Sharing data to examine trends over time. KPD is increasing, with 1 in 5 living donor kidney transplants (LDKTs) in 2021 facilitated by KPD. The proportion of LDKT performed via KPD was comparable for non-Whites and Whites. An increasing proportion of KPD transplants are going to non-Whites. End-chain recipients are not identified in the database. To what extent these trends reflect how end-chain kidneys are allocated, as opposed to increase in living donation among minorities, remains unclear. Half the LDKT in 2021 in sensitized (panel reactive antibody ≥ 80%) and highly sensitized (panel reactive antibody ≥ 98%) groups occurred via KPD. Yet, the proportion of KPD transplants performed in sensitized recipients has declined since 2013, likely due to changes in the deceased donor allocation policies and newer KPD strategies such as compatible KPD. In 2021, 40% of the programs reported not performing any KPD transplants. Our study highlights the need for understanding barriers to pursuing and expanding KPD at the center level and the need for more detailed and accurate data collection at the national level.
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Affiliation(s)
- Neetika Garg
- Division of Nephrology, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA.
| | - Carrie Thiessen
- Division of Transplantation, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Peter P Reese
- Renal-Electrolyte and Hypertension Division, Department of Medicine, and Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Matthew Cooper
- Division of Transplantation, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | | | - John Friedewald
- Comprehensive Transplant Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Asif A Sharfuddin
- Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Angie G Nishio Lucar
- Division of Nephrology, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA
| | - Darshana M Dadhania
- Division of Nephrology, Department of Medicine, Weill Cornell Medicine-New York Presbyterian Hospital, New York, USA
| | - Vineeta Kumar
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Amy D Waterman
- Houston Methodist Transplant Center and Academic Institute, Houston, Texas, USA
| | - Didier A Mandelbrot
- Division of Nephrology, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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15
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Rawashdeh B, AlRyalat SA, Abuassi M, Prasad R, Cooper M. Unveiling transplantation research productivity of United States: A bibliometric analysis. World J Transplant 2023; 13:391-402. [PMID: 38174148 PMCID: PMC10758679 DOI: 10.5500/wjt.v13.i6.391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/11/2023] [Accepted: 09/22/2023] [Indexed: 12/15/2023] Open
Abstract
BACKGROUND The United States has witnessed significant advancements in the field of organ transplantation over the course of the last five decades, as demonstrated by a notable increase in the quantity of academic research. The presence of a highly dynamic research environment necessitates continuous evaluations to maintain the integrity and progress of the field. AIM To evaluate the total output and thematic emphasis of transplant research conducted in the United States. METHODS On January 10, 2023, we conducted a bibliometric search of United States research output in transplantation journals from the Web of Science database's Science Citation Index Expanded. We excluded editorials, meeting abstracts, and other non-article types. We analyzed annual trends, authors, institutions, articles, keywords, and countries collaborating with the United States, using VOSviewer 1.6.18 to create figures and tables. RESULTS The United States published 25956 papers (3078 reviews and 22878 articles) representing 37.7% of the world's scientific output. Canada emerged as the top collaborator with the United States, co-authoring 1263 articles. Leading institutions in United States transplantation research were the University of Pittsburgh (1749 articles), Mayo Clinic (1605 articles), Harvard Medical School (1549 articles), and Johns Hopkins University (1280 articles). The top three keywords with over 2000 occurrences were "recipients," "survival," and "outcomes," indicating a focus on graft and recipient outcome markers by United States researchers. CONCLUSION Our findings demonstrate the United States leadership in organ transplantation research, contributing significantly to the global scientific output in this field. However, opportunities exist for fostering expansive partnerships, particularly with developing countries. This study provides valuable insights into the transplantation research landscape in the United States, emphasizing the importance of ongoing evaluations to maintain and propel advancements in this critical medical discipline. The results may facilitate future collaborations, knowledge exchange, and the pursuit of innovative solutions in the realm of organ transplantation.
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Affiliation(s)
- Badi Rawashdeh
- Department of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI 53202, United States
| | | | - Mohammad Abuassi
- Department of Internal Medicine, Jordan Hospital, Amman 00962, Jordan
| | - Raj Prasad
- Department of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI 53202, United States
| | - Matthew Cooper
- Department of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI 53202, United States
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16
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Thongprayoon C, Miao J, Jadlowiec C, Mao SA, Mao M, Leeaphorn N, Kaewput W, Pattharanitima P, Valencia OAG, Tangpanithandee S, Krisanapan P, Suppadungsuk S, Nissaisorakarn P, Cooper M, Cheungpasitporn W. Distinct clinical profiles and post-transplant outcomes among kidney transplant recipients with lower education levels: uncovering patterns through machine learning clustering. Ren Fail 2023; 45:2292163. [PMID: 38087474 PMCID: PMC11001364 DOI: 10.1080/0886022x.2023.2292163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/03/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Educational attainment significantly influences post-transplant outcomes in kidney transplant patients. However, research on specific attributes of lower-educated subgroups remains underexplored. This study utilized unsupervised machine learning to segment kidney transplant recipients based on education, further analyzing the relationship between these segments and post-transplant results. METHODS Using the OPTN/UNOS 2017-2019 data, consensus clustering was applied to 20,474 kidney transplant recipients, all below a college/university educational threshold. The analysis concentrated on recipient, donor, and transplant features, aiming to discern pivotal attributes for each cluster and compare post-transplant results. RESULTS Four distinct clusters emerged. Cluster 1 comprised younger, non-diabetic, first-time recipients from non-hypertensive younger donors. Cluster 2 predominantly included white patients receiving their first-time kidney transplant either preemptively or within three years, mainly from living donors. Cluster 3 included younger re-transplant recipients, marked by elevated PRA, fewer HLA mismatches. In contrast, Cluster 4 captured older, diabetic patients transplanted after prolonged dialysis duration, primarily from lower-grade donors. Interestingly, Cluster 2 showcased the most favorable post-transplant outcomes. Conversely, Clusters 1, 3, and 4 revealed heightened risks for graft failure and mortality in comparison. CONCLUSIONS Through unsupervised machine learning, this study proficiently categorized kidney recipients with lesser education into four distinct clusters. Notably, the standout performance of Cluster 2 provides invaluable insights, underscoring the necessity for adept risk assessment and tailored transplant strategies, potentially elevating care standards for this patient cohort.
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Affiliation(s)
- Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Jing Miao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Shennen A. Mao
- Division of Transplant Surgery, Mayo Clinic, Jacksonville, FL, USA
| | - Michael Mao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Napat Leeaphorn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, FL, USA
| | - Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | | | - Oscar A. Garcia Valencia
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Supawit Tangpanithandee
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
- Chakri Naruebodindra Medical Institute, Ramathibodi Hospital, Mahidol University, Samut Prakan, Thailand
| | - Pajaree Krisanapan
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
- Department of Internal Medicine, Thammasat University, Pathum Thani, Thailand
| | - Supawadee Suppadungsuk
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
- Chakri Naruebodindra Medical Institute, Ramathibodi Hospital, Mahidol University, Samut Prakan, Thailand
| | - Pitchaphon Nissaisorakarn
- Department of Medicine, Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Matthew Cooper
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
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17
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Gupta S, Cooper M, Zhao X, Yarman Y, Thomson H, DeHelian D, Brass LF, Ma P. A regulatory node involving Gα q, PLCβ, and RGS proteins modulates platelet reactivity to critical agonists. J Thromb Haemost 2023; 21:3633-3639. [PMID: 37657560 PMCID: PMC10840692 DOI: 10.1016/j.jtha.2023.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/03/2023]
Abstract
BACKGROUND Most platelet agonists work through G protein-coupled receptors, activating pathways that involve members of the Gq, Gi, and G12/G13 families of heterotrimeric G proteins. Gq signaling has been shown to be critical for efficient platelet activation. Growing evidence suggests that regulatory mechanisms converge on G protein-coupled receptors and Gq to prevent overly robust platelet reactivity. OBJECTIVES To identify and characterize mechanisms by which Gq signaling is regulated in platelets. METHODS Based on our prior experience with a Gαi2 variant that escapes regulation by regulator of G protein signaling (RGS) proteins, a Gαq variant was designed with glycine 188 replaced with serine (G188S) and then incorporated into a mouse line so that its effects on platelet activation and thrombus formation could be studied in vitro and in vivo. RESULTS AND CONCLUSIONS As predicted, the G188S substitution in Gαq disrupted its interaction with RGS18. Unexpectedly, it also uncoupled PLCβ-3 from activation by platelet agonists as evidenced by a loss rather than a gain of platelet function in vitro and in vivo. Binding studies showed that in addition to preventing the binding of RGS18 to Gαq, the G188S substitution also prevented the binding of PLCβ-3 to Gαq. Structural analysis revealed that G188 resides in the region that is also important for Gαq binding to PLCβ-3 in platelets. We conclude that the Gαq signaling node is more complex than that has been previously understood, suggesting that there is cross-talk between RGS proteins and PLCβ-3 in the context of Gαq signaling.
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Affiliation(s)
- Shuchi Gupta
- Department of Medicine and the Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Matthew Cooper
- Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Xuefei Zhao
- Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Yanki Yarman
- Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Hannah Thomson
- Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Daniel DeHelian
- Department of Medicine and the Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Lawrence F Brass
- Department of Medicine and the Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Peisong Ma
- Department of Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.
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Long JJ, Motter JD, Jackson KR, Chen J, Orandi BJ, Montgomery RA, Stegall MD, Jordan SC, Benedetti E, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Verbesey JE, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Wellen JR, Bozorgzadeh A, Gaber AO, Heher EC, Weng FL, Djamali A, Helderman JH, Concepcion BP, Brayman KL, Oberholzer J, Kozlowski T, Covarrubias K, Massie AB, McAdams-DeMarco MA, Segev DL, Garonzik-Wang JM. Characterizing the risk of human leukocyte antigen-incompatible living donor kidney transplantation in older recipients. Am J Transplant 2023; 23:1980-1989. [PMID: 37748554 PMCID: PMC10767749 DOI: 10.1016/j.ajt.2023.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/26/2023] [Accepted: 09/18/2023] [Indexed: 09/27/2023]
Abstract
Older compatible living donor kidney transplant (CLDKT) recipients have higher mortality and death-censored graft failure (DCGF) compared to younger recipients. These risks may be amplified in older incompatible living donor kidney transplant (ILDKT) recipients who undergo desensitization and intense immunosuppression. In a 25-center cohort of ILDKT recipients transplanted between September 24, 1997, and December 15, 2016, we compared mortality, DCGF, delayed graft function (DGF), acute rejection (AR), and length of stay (LOS) between 234 older (age ≥60 years) and 1172 younger (age 18-59 years) recipients. To investigate whether the impact of age was different for ILDKT recipients compared to 17 542 CLDKT recipients, we used an interaction term to determine whether the relationship between posttransplant outcomes and transplant type (ILDKT vs CLDKT) was modified by age. Overall, older recipients had higher mortality (hazard ratio: 1.632.072.65, P < .001), lower DCGF (hazard ratio: 0.360.530.77, P = .001), and AR (odds ratio: 0.390.540.74, P < .001), and similar DGF (odds ratio: 0.461.032.33, P = .9) and LOS (incidence rate ratio: 0.880.981.10, P = 0.8) compared to younger recipients. The impact of age on mortality (interaction P = .052), DCGF (interaction P = .7), AR interaction P = .2), DGF (interaction P = .9), and LOS (interaction P = .5) were similar in ILDKT and CLDKT recipients. Age alone should not preclude eligibility for ILDKT.
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Affiliation(s)
- Jane J Long
- Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Jennifer D Motter
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA
| | - Kyle R Jackson
- Department of Surgery, Emory University, Atlanta, Georgia, USA
| | - Jennifer Chen
- Department of Surgery, Baylor College of Medicine, Houston, Texas, USA
| | - Babak J Orandi
- Department of Surgery, University of Alabama, Birmingham, Alabama, USA
| | - Robert A Montgomery
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA
| | - Mark D Stegall
- Department of Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Stanley C Jordan
- Department of Medicine, Cedars-Sinai Comprehensive Transplant Center, Los Angeles, California, USA
| | - Enrico Benedetti
- Department of Surgery, University of Illinois-Chicago, Chicago, Illinois, USA
| | - Ty B Dunn
- Department of Surgery, University of Pennsylvania, Philadelphia, Philadelphia, USA
| | - Lloyd E Ratner
- Department of Surgery, Columbia University Medical Center, New York, New York, USA
| | - Sandip Kapur
- Department of Surgery, New York Presbyterian/Weill Cornell Medical Center, New York, New York, USA
| | - Ronald P Pelletier
- Department of Surgery, Robert Wood Johnson University Hospital, New Brunswick, New Jersey, USA
| | - John P Roberts
- Department of Surgery, University of California-San Francisco, San Francisco, California, USA
| | - Marc L Melcher
- Department of Surgery, Stanford University, Palo Alto, California, USA
| | - Pooja Singh
- Department of Medicine, Thomas Jefferson University Hospital, Philadelphia, Philadelphia, USA
| | - Debra L Sudan
- Department of Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Marc P Posner
- Department of Surgery, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Jose M El-Amm
- Integris Baptist Medical Center, Transplant Division, Oklahoma City, Oklahoma, USA
| | - Ron Shapiro
- Recanati/Miller Transplantation Institute, Mount Sinai Hospital, New York, New York, USA
| | - Matthew Cooper
- Medstar Georgetown Transplant Institute, Washington, District of Columbia, USA
| | - Jennifer E Verbesey
- Medstar Georgetown Transplant Institute, Washington, District of Columbia, USA
| | - George S Lipkowitz
- Department of Surgery, Baystate Medical Center Springfield, Massachusetts, Massachusetts, USA
| | - Michael A Rees
- Department of Urology, University of Toledo Medical Center, Toledo, Ohio, USA
| | - Christopher L Marsh
- Department of Surgery, Scripps Clinic and Green Hospital, La Jolla, California, USA
| | | | - David A Gerber
- Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Jason R Wellen
- Department of Surgery, Barnes-Jewish Hospital, St. Louis, Missouri, USA
| | - Adel Bozorgzadeh
- Department of Surgery, University of Massachusetts Memorial Medical Center, Worcester, Massachusetts, USA
| | - A Osama Gaber
- Department of Surgery, Houston Methodist Hospital, Houston, Texas, USA
| | - Eliot C Heher
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Francis L Weng
- Renal and Pancreas Transplant Division, Cooperman Barnabas Medical Center, Livingston, New Jersey, USA
| | - Arjang Djamali
- Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - J Harold Helderman
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Beatrice P Concepcion
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kenneth L Brayman
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Jose Oberholzer
- Department of Surgery, University of Virginia, Charlottesville, Virginia, USA
| | - Tomasz Kozlowski
- Department of Surgery, University of Florida, Gainesville, Florida, USA
| | - Karina Covarrubias
- Department of Surgery, University of California San Diego, San Diego, California, USA
| | - Allan B Massie
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA; Department of Population Health, New York University Grossman School of Medicine, New York, New York, USA
| | - Mara A McAdams-DeMarco
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA; Department of Population Health, New York University Grossman School of Medicine, New York, New York, USA
| | - Dorry L Segev
- Department of Surgery, New York University Grossman School of Medicine, New York, New York, USA; Department of Population Health, New York University Grossman School of Medicine, New York, New York, USA; Scientific Registry of Transplant Recipients, Minneapolis, Minnesota, USA
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19
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Xu Z, Choi J, Cooper M, King J, Fiala MA, Liu J, Pusic I, Romee R, Cashen A, Jacoby MA, Stockerl-Goldstein K, Abboud C, Vij R, Uy G, Westervelt P, Walter MJ, DiPersio JF, Schroeder MA. Phase I-II Trial of Early Azacitidine after Matched Unrelated Donor Hematopoietic Cell Transplantation. Transplant Cell Ther 2023; 29:699.e1-699.e9. [PMID: 37597685 DOI: 10.1016/j.jtct.2023.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/21/2023]
Abstract
Graft-versus-host disease (GVHD) is a major complication after allogeneic hematopoietic cell transplantation (allo-HCT). The hypomethylating agent azacitidine (AZA) has been shown to be effective in preclinical and clinical studies for the prevention of acute GVHD (aGVHD). We sought to determine the maximum tolerated dose (MTD) of AZA when given on days 1 to 5 of a 28-day cycle for 4 cycles, starting on day +7 after allo-HCT, as well as its impact on aGVHD and chronic GVHD (cGVHD), relapse, and overall survival (OS) in patients undergoing matched unrelated donor allo-HCT. This study was a single-arm, single-center, open-label phase I-II study with a total of 15 and 38 patients enrolled in the phase I and II portions of the trial, respectively. A standard 3+3 study design was used in phase I, and all patients in phase II received AZA at the MTD determined in phase I. The MTD of AZA starting at day +7 post-transplantation was 45 mg/m2. Phase II of the study was halted after enrolling 38 of the planned 46 patients following an interim analysis that suggested futility. Overall, AZA at 45 mg/m2 exhibited a side effect profile consistent with prior reports and had a minimal impact on engraftment. The cumulative incidence of clinically significant aGVHD by day +180 was 39.9% (95% confidence interval [CI], 22% to 53.7%). The incidence of all-grade cGVHD was 61.4% (95% CI, 40.3% to 75%). At 1 year, OS was 73.7% (95% CI, 60.9% to 89.1%), and the disease relapse rate was 11.4% (95% CI, .2% to 21.3%). Our results suggest that early post-allo-HCT AZA has limited efficacy in preventing aGVHD and cGVHD but could have a beneficial effect in preventing disease relapse.
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Affiliation(s)
- Ziheng Xu
- Washington University School of Medicine, St. Louis, Missouri
| | - Jaebok Choi
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Matthew Cooper
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Jeffrey King
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Mark A Fiala
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Jingxia Liu
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
| | - Iskra Pusic
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Rizwan Romee
- Department of Medicine, Harvard Medical School, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Amanda Cashen
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Meagan A Jacoby
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Keith Stockerl-Goldstein
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Camille Abboud
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Ravi Vij
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Geoffrey Uy
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Peter Westervelt
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Matthew J Walter
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - John F DiPersio
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Mark A Schroeder
- Division of Oncology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri.
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20
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Dorman T, Drever B, Plumridge S, Gregory K, Cooper M, Roderick A, Arruzza E. Radiation dose to staff from medical X-ray scatter in the orthopaedic theatre. Eur J Orthop Surg Traumatol 2023; 33:3059-3065. [PMID: 37004602 PMCID: PMC10504098 DOI: 10.1007/s00590-023-03538-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/21/2023] [Indexed: 04/04/2023]
Abstract
PURPOSE Given the growing demand for intraoperative imaging, there is increased concern for radiation dose for orthopaedic surgical staff. This study sought to determine the distribution of scatter radiation from fluoroscopic imaging in the orthopaedic surgical environment, with particular emphasis on the positions of personnel and the type of orthopaedic surgery performed. METHODS A radiation survey detector was deployed at various angles and distances around an anthropomorphic phantom. The scatter dose rate in microsieverts per hour (µSv/h) was recorded using consistent exposure parameters for five common surgical procedures. A C-arm unit produced radiation for the hip arthroscopy, hip replacement and knee simulations, whilst a mini C-arm unit produced fluoroscopy for the foot and hand simulations. RESULTS Readings were tabulated, and coloured heatmaps were generated from scatter measurements for each of the five procedures. Positions corresponding to the typical location of the surgical staff (surgeon, surgical assistant, anaesthetist, instrument (scrub) nurse, circulation (scout) nurse and anaesthetic nurse) were superimposed on heatmaps. The surgeon's proximity to the radiation source meant this position experienced the greatest amount of radiation in all five surgical procedures. Mini C-arm doses were considered low in all procedures for positions, with and without lead protection. CONCLUSION This investigation demonstrated the distribution of scattered radiation dose experienced at different positions within the orthopaedic surgical theatre. It reinforces the importance of staff increasing their distance from the primary beam where possible, reducing exposure time and increasing shielding with lead protection.
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Affiliation(s)
- T Dorman
- Jones Radiology, Eastwood, South Australia, 5063, Australia
| | - B Drever
- Jones Radiology, Eastwood, South Australia, 5063, Australia
| | - S Plumridge
- Jones Radiology, Eastwood, South Australia, 5063, Australia
| | - K Gregory
- SA Radiation, Adelaide, South Australia, 5067, Australia
| | - M Cooper
- SA Radiation, Adelaide, South Australia, 5067, Australia
| | - A Roderick
- Sportsmed, Stepney, South Australia, 5069, Australia
- UniSA Clinical & Health Sciences, University of South Australia, Adelaide, South Australia, 5000, Australia
| | - E Arruzza
- Jones Radiology, Eastwood, South Australia, 5063, Australia.
- UniSA Allied Health & Human Performance, University of South Australia, Adelaide, South Australia, 5000, Australia.
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21
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Rawashdeh B, Alryalat SA, Kim J, Eriksen C, Abu Assi M, Prasad R, Cooper M. The Leading Transplantation Journals: A Trend Analysis, 2011-2021. J Transplant 2023; 2023:8858320. [PMID: 37795130 PMCID: PMC10547570 DOI: 10.1155/2023/8858320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/21/2023] [Accepted: 09/05/2023] [Indexed: 10/06/2023] Open
Abstract
Background As the field of transplantation has expanded, so have the quantity and variety of articles published on the topic. Evaluation of publications and journals is crucial to the expansion of transplant research. This study investigated the research output and journal metrics of the leading solid organ transplant journals published between 2011 and 2021 based on estimations of the trends in the category CiteScore from the Scopus database. Materials and Methods We obtained data on the listed journals from the Scopus Source List. We then filtered the list for "Transplantation" journals. Only the top quartiles or quartile 1 (Q1) journals were placed in this category. This study focused specifically on transplantation journals and did not include other journals related to diseases of transplanted organs such as the kidney, liver, heart, and lungs. Results The number of transplantation journals increased by 42.8% in the last ten years, from 28 in 2011 to 40 in 2021. Between 2011 and 2021, nine transplantation journals ranked in the highest quartile (Q1). The American Journal of Transplantation was the top journal in both years, with a 150% increase in citations and an 11.2% increase in articles published. Open access (OA) transplant journals rose from 3 in 2011 to 10 in 2021. In 2021, OA journals earned 8,555 citations, a 125% increase from 2011. Despite this increase, non-OA journals received more citations than OA in 2021 (p value 0.026). Conclusion Solid organ transplantation advances lead to more publications and citations. Regular journals and publications evaluation benefits academics and policymakers by promoting the growth of research. This study examined solid organ transplantation journals and gave a global perspective on transplant journal rankings and compared their status in 2011 and 2021.
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Affiliation(s)
- Badi Rawashdeh
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Joohyun Kim
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Calvin Eriksen
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Raj Prasad
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Matthew Cooper
- Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
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22
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Mason W, Laven LJ, Cooper M, Laven RA. Lameness recovery rates following treatment of dairy cattle with claw horn lameness in the Waikato region of New Zealand. N Z Vet J 2023; 71:226-235. [PMID: 37230967 DOI: 10.1080/00480169.2023.2219227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 05/22/2023] [Indexed: 05/27/2023]
Abstract
AIMS To describe the time in days for lame dairy cows to recover after diagnosis and treatment of claw horn lameness, and to investigate whether cure rates differed between farms. METHODS Five dairy farms in the Waikato region were conveniently enrolled into a descriptive epidemiological study. Three of these farms had dairy cattle enrolled over two consecutive seasons, while two farms enrolled for one year. Lame cattle diagnosed by the farmers were enrolled into the study if they had a lameness score (LS ≥ 2 on a 0-3 scale) and claw horn lesions. All enrolled animals were treated by a single veterinarian following a consistent methodology, and subsequently assessed for LS at a median frequency of 4 days from enrolment until they were sound (LS = 0). The times (days) taken for animals to become sound and non-lame (LS < 2) were reported for all animals, and Kaplan-Meier survival curves used to present the results. A Cox-proportional hazard model was used to assess if the hazard of soundness was associated with farm, age, breed, lesion, number of limbs involved, and LS at enrolment. RESULTS A total of 241 lame cattle with claw horn lesions were enrolled across the five farms. White line disease was the predominant pain-causing lesion in 225 (93%) animals, and blocks were applied to 205 (85%) of enrolled animals. The overall median days from enrolment to becoming sound was 18 (95% CI = 14-21) days, and 7 (95% CI = 7-8) days to become non-lame. A difference in the hazards of lameness cure between farms was identified (p = 0.007), with median days to lameness cure between farms ranging from 11 to 21 days. No associations were identified between age, breed, limb, or LS at enrolment on the lameness cure rates. CONCLUSIONS Treatment of claw horn lameness following industry-standard guidelines in dairy cattle on five New Zealand dairy farms resulted in rapid cure, although cure rates differed between farms. CLINICAL RELEVANCE Following industry best-practice lameness treatment guidelines, including frequent use of blocks, can result in rapid lameness cure rates in New Zealand dairy cows. This study also suggests that management of lame cattle on pasture can positively benefit their welfare and recovery times. The reported cure rates provide veterinarians with benchmarks on the length of time after which a lame animal should be re-examined, and in the investigation of poor treatment response rates at the herd level.
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Affiliation(s)
- W Mason
- EpiVets, Raglan, New Zealand
- Tāwharau Ora - School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - L J Laven
- Tāwharau Ora - School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - M Cooper
- Veterinary Enterprises Group, Otorohanga, New Zealand
| | - R A Laven
- Tāwharau Ora - School of Veterinary Science, Massey University, Palmerston North, New Zealand
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23
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Cote CL, Jessula S, Kim Y, Cooper M, McDougall G, Casey P, Dua A, Lee MS, Smith M, Herman C. Trends in Incidence of Abdominal Aortic Aneurysm Rupture, Repair, and Mortality in Nova Scotia. Ann Vasc Surg 2023; 95:62-73. [PMID: 36509371 DOI: 10.1016/j.avsg.2022.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/02/2022] [Accepted: 11/09/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND The purpose of this study was to examine sex-based trends in incidence of elective abdominal aortic aneurysm (AAA), ruptured AAA, ruptured AAA repair, and AAA-related mortality. METHODS A retrospective analysis of patients presenting with AAA from 2005 to 2015 was conducted. Rates of elective AAA repair, ruptured AAA, ruptured AAA repair, and mortality were obtained from linking provincial administrative data using medical services insurance billing number. The age-adjusted incidence of elective AAA repair, overall rate of ruptured AAA, ruptured AAA repair, and AAA-related mortality was calculated for each sex based on Canadian census estimates, adjusted to the Canadian standard population. Weighted linear regression was performed to analyze trends in incidence over time. RESULTS One thousand nine hundred eighty-six elective AAA repairs were identified, of which 1,098 were repaired open and 898 underwent endovascular abdominal aneurysm repair (EVAR). Five hundred and seventy ruptured AAAs were identified, of which 295 (52%) were repaired: 259 open and 36 EVAR. The proportion of ruptured AAA that was repaired did not change over time (P = 0.54). The proportion repairs performed using EVAR increased significantly in both elective (P < 0.001) and rupture repairs (P < 0.001). During the study period, 662 patients died of AAA-associated mortality. The average incidence of elective AAA repair in men was 29.3 (95% confidence interval (CI): 27.8 to 30.8) per 100,000 and decreased over time (P = 0.04), whereas the average incidence in women was 9.2 [8.3 to 10.0] and stable (P = 0.07). The incidence of open elective AAA repair was 10.5 [9.9-11.1] with a decreasing trend over time (P < 0.001) and EVAR was 9.0 (8.5-9.6) with an increasing trend over time (P < 0.001). A decreasing trend of overall ruptured AAA (5.4 [5.0-5.9], P < 0.001), ruptured AAA repair (2.9 [2.5-3.2], P = 0.02), and of AAA-related mortality (6.2 [5.8-6.8], P < 0.001) was found, with consistent trends in both sexes. The incidence of open ruptured AAA repair decreased over time (P = 0.001) whereas the incidence of ruptured EVAR remained stable (P = 0.23). CONCLUSIONS The incidence of elective AAA repair is decreasing in males but not females, whereas the incidence of rupture has decreased in both sexes. This has translated into reduced incidence of AAA-related mortality. Increased adoption of EVAR for ruptured AAA should continue these trends.
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Affiliation(s)
- Claudia L Cote
- Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, Canada.
| | - Samuel Jessula
- Division of Vascular and Endovascular Surgery, Harvard Medical School, Massachusetts General Hospital, Boston, MA
| | - Young Kim
- Division of Vascular and Endovascular Surgery, Duke University, Durham, NC
| | - Matthew Cooper
- Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Garrett McDougall
- Department of Emergency Medicine, McMaster University, Hamilton, Canada
| | - Patrick Casey
- Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, Canada
| | - Anahita Dua
- Division of Vascular and Endovascular Surgery, Harvard Medical School, Massachusetts General Hospital, Boston, MA
| | - Min S Lee
- Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, Canada
| | - Matthew Smith
- Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, Canada
| | - Christine Herman
- Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, Canada; Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, Canada
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24
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Thongprayoon C, Tangpanithandee S, Jadlowiec CC, Mao SA, Mao MA, Vaitla P, Acharya PC, Leeaphorn N, Kaewput W, Pattharanitima P, Suppadungsuk S, Krisanapan P, Nissaisorakarn P, Cooper M, Craici IM, Cheungpasitporn W. Characteristics of Kidney Transplant Recipients with Prolonged Pre-Transplant Dialysis Duration as Identified by Machine Learning Consensus Clustering: Pathway to Personalized Care. J Pers Med 2023; 13:1273. [PMID: 37623523 PMCID: PMC10455164 DOI: 10.3390/jpm13081273] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/16/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023] Open
Abstract
Longer pre-transplant dialysis duration is known to be associated with worse post-transplant outcomes. Our study aimed to cluster kidney transplant recipients with prolonged dialysis duration before transplant using an unsupervised machine learning approach to better assess heterogeneity within this cohort. We performed consensus cluster analysis based on recipient-, donor-, and transplant-related characteristics in 5092 kidney transplant recipients who had been on dialysis ≥ 10 years prior to transplant in the OPTN/UNOS database from 2010 to 2019. We characterized each assigned cluster and compared the posttransplant outcomes. Overall, the majority of patients with ≥10 years of dialysis duration were black (52%) or Hispanic (25%), with only a small number (17.6%) being moderately sensitized. Within this cohort, three clinically distinct clusters were identified. Cluster 1 patients were younger, non-diabetic and non-sensitized, had a lower body mass index (BMI) and received a kidney transplant from younger donors. Cluster 2 recipients were older, unsensitized and had a higher BMI; they received kidney transplant from older donors. Cluster 3 recipients were more likely to be female with a higher PRA. Compared to cluster 1, cluster 2 had lower 5-year death-censored graft (HR 1.40; 95% CI 1.16-1.71) and patient survival (HR 2.98; 95% CI 2.43-3.68). Clusters 1 and 3 had comparable death-censored graft and patient survival. Unsupervised machine learning was used to characterize kidney transplant recipients with prolonged pre-transplant dialysis into three clinically distinct clusters with variable but good post-transplant outcomes. Despite a dialysis duration ≥ 10 years, excellent outcomes were observed in most recipients, including those with moderate sensitization. A disproportionate number of minority recipients were observed within this cohort, suggesting multifactorial delays in accessing kidney transplantation.
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Affiliation(s)
- Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA; (S.T.); (S.S.); (P.K.); (I.M.C.); (W.C.)
| | - Supawit Tangpanithandee
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA; (S.T.); (S.S.); (P.K.); (I.M.C.); (W.C.)
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakan 10540, Thailand
| | - Caroline C. Jadlowiec
- Division of Nephrology, University of Mississippi Medical Center, Jackson, MS 39216, USA;
| | - Shennen A. Mao
- Division of Transplant Surgery, Mayo Clinic, Phoenix, AZ 85054, USA;
| | - Michael A. Mao
- Division of Transplant Surgery, Mayo Clinic, Jacksonville, FL 32224, USA;
| | - Pradeep Vaitla
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, FL 32224, USA;
| | - Prakrati C. Acharya
- Division of Nephrology, Texas Tech Health Sciences Center El Paso, El Paso, TX 79905, USA;
| | - Napat Leeaphorn
- Renal Transplant Program, University of Missouri-Kansas City School of Medicine/Saint Luke’s Health System, Kansas City, MO 64108, USA;
| | - Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok 10400, Thailand;
| | - Pattharawin Pattharanitima
- Division of Nephrology, Department of Internal Medicine, Faculty of Medicine Thammasat University, Pathum Thani 12120, Thailand;
| | - Supawadee Suppadungsuk
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA; (S.T.); (S.S.); (P.K.); (I.M.C.); (W.C.)
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakan 10540, Thailand
| | - Pajaree Krisanapan
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA; (S.T.); (S.S.); (P.K.); (I.M.C.); (W.C.)
- Division of Nephrology, Department of Internal Medicine, Faculty of Medicine Thammasat University, Pathum Thani 12120, Thailand;
- Division of Nephrology, Department of Internal Medicine, Thammasat University Hospital, Pathum Thani 12120, Thailand
| | - Pitchaphon Nissaisorakarn
- Deparment of Medicine, Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA;
| | - Matthew Cooper
- Department of Surgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
| | - Iasmina M. Craici
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA; (S.T.); (S.S.); (P.K.); (I.M.C.); (W.C.)
| | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA; (S.T.); (S.S.); (P.K.); (I.M.C.); (W.C.)
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Ashley K, Tang MY, Flynn D, Cooper M, Errington L, Avery L. Identifying the active ingredients of training interventions for healthcare professionals to promote and support increased levels of physical activity in adults with heart failure: a systematic review. Health Psychol Rev 2023:1-22. [PMID: 37530097 DOI: 10.1080/17437199.2023.2238811] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 07/16/2023] [Indexed: 08/03/2023]
Abstract
Heart failure (HF) is characterised by breathlessness and fatigue that impacts negatively on patients' intentions to prioritise physical activity (PA). Healthcare professionals (HCPs) experience challenges when motivating patients to increase PA. It is essential to develop an understanding of how to support HCPs to deliver PA interventions. We aimed to identify active ingredients of HCP training interventions to enable delivery of PA interventions to HF patients. Nine databases were searched. Data were extracted on study characteristics, active ingredients, outcomes, and fidelity measures. Data were synthesised narratively, and a promise analysis was conducted on intervention features. Ten RCTs, which reported a training intervention for HCPs were included (N = 22 HCPs: N = 1,414 HF patients). Two studies reported the use of theory to develop HCP training. Seven behaviour change techniques (BCTs) were identified across the 10 training interventions. The most 'promising' BCTs were 'instruction on how to perform the behaviour' and 'problem solving'. Two studies reported that HCP training interventions had been formally evaluated. Fidelity domains including study design, monitoring and improving the delivery of treatment, intervention delivery, and provider training were infrequently reported. Future research should prioritise theory-informed development and robust evaluation of training interventions for HCPs to enable faithful and quality delivery of patient interventions.
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Affiliation(s)
- Kirsten Ashley
- Centre for Rehabilitation, School of Health and Life Sciences, Teesside University, Middlesbrough, UK
| | - Mei Yee Tang
- School of Psychology, Newcastle University, Newcastle upon Tyne, UK
| | - Darren Flynn
- Department of Nursing, Midwifery and Health, Northumbria University, Newcastle upon Tyne, UK
| | - Matthew Cooper
- Centre for Rehabilitation, School of Health and Life Sciences, Teesside University, Middlesbrough, UK
| | - Linda Errington
- Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Leah Avery
- Centre for Rehabilitation, School of Health and Life Sciences, Teesside University, Middlesbrough, UK
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Li J, Cooper M, Shults CC, Satler LF, MacGillivray TE, Waksman R, Case BC. Post-Myocardial Infarction Free-Wall Rupture: Rapid Diagnosis and Management. JACC Case Rep 2023; 18:101915. [PMID: 37545687 PMCID: PMC10401153 DOI: 10.1016/j.jaccas.2023.101915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/11/2023] [Accepted: 05/18/2023] [Indexed: 08/08/2023]
Abstract
We present a case of post-myocardial infarction free-wall rupture in a critically ill patient presenting to the emergency department. Through our case we highlight the prompt evaluation, diagnosis, and management necessary to improve survival in a patient with this life-threatening condition. (Level of Difficulty: Beginner.).
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Affiliation(s)
- Jason Li
- Section of Internal Medicine, MedStar Georgetown University Hospital, Washington, DC, USA
| | - Matthew Cooper
- Section of Emergency Medicine, MedStar Southern Maryland Hospital, Clinton, Maryland, USA
| | - Christian C. Shults
- Section of Cardiothoracic Surgery, MedStar Washington Hospital Center, Washington, DC, USA
| | - Lowell F. Satler
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington, DC, USA
| | - Thomas E. MacGillivray
- Section of Cardiothoracic Surgery, MedStar Washington Hospital Center, Washington, DC, USA
| | - Ron Waksman
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington, DC, USA
| | - Brian C. Case
- Section of Interventional Cardiology, MedStar Washington Hospital Center, Washington, DC, USA
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Tanriover B, Stewart D, Kamal L, Saeed M, Cooper M, Foutz J, McGehee H, Gupta G. The Independent Effects of Kidney Length and Vascular Plaque on Ten-Year Outcomes of Extended Criteria Donor Kidney Transplants. Transpl Int 2023; 36:11373. [PMID: 37519905 PMCID: PMC10379651 DOI: 10.3389/ti.2023.11373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 07/05/2023] [Indexed: 08/01/2023]
Abstract
The independent effects of deceased donor kidney length and vascular plaque on long-term graft survival are not established. Utilizing DonorNet attachments from 4,480 expanded criteria donors (ECD) recovered between 2008 and 2012 in the United States with at least one kidney biopsied and transplanted, we analyzed the relationship between kidney length and vascular plaques and 10-year hazard of all-cause graft failure (ACGF) using causal inference methods in a Cox regression framework. The composite plaque score (range 0-4) and the presence of any plaque (yes, no) was also analyzed. Kidney length was modeled both categorically (<10, 10-12, >12 cm) as well as numerically, using a restricted cubic spline to capture nonlinearity. Effects of a novel composite plaque score 4 vs. 0 (HR 1.08; 95% CI: 0.96, 1.23) and the presence of any vascular plaque (HR 1.08; 95% CI: 0.98, 1.20) were attenuated after adjustment. Likewise, we identified a potential nonlinear relationship between kidney length and the 10-year hazard of ACGF, however the strength of the relationship was attenuated after adjusting for other donor factors. The independent effects of vascular plaque and kidney length on long-term ECD graft survival were found to be minimal and should not play a significant role in utilization.
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Affiliation(s)
- Bekir Tanriover
- Division of Nephrology, University of Arizona, Tucson, AZ, United States
| | - Darren Stewart
- Department of Surgery, New York University Langone Health, New York City, NY, United States
| | - Layla Kamal
- Division of Nephrology, Virginia Commonwealth University, Richmond, VA, United States
| | - Muhammad Saeed
- Division of Nephrology, Virginia Commonwealth University, Richmond, VA, United States
| | - Matthew Cooper
- Medical College of Wisconsin, Milwaukee, WI, United States
| | - Julia Foutz
- United Network for Organ Sharing, Richmond, VA, United States
| | | | - Gaurav Gupta
- Division of Nephrology, Virginia Commonwealth University, Richmond, VA, United States
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Thongprayoon C, Miao J, Jadlowiec CC, Mao SA, Mao MA, Leeaphorn N, Kaewput W, Pattharanitima P, Tangpanithandee S, Krisanapan P, Nissaisorakarn P, Cooper M, Cheungpasitporn W. Differences between Kidney Transplant Recipients from Deceased Donors with Diabetes Mellitus as Identified by Machine Learning Consensus Clustering. J Pers Med 2023; 13:1094. [PMID: 37511707 PMCID: PMC10381319 DOI: 10.3390/jpm13071094] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/21/2023] [Accepted: 07/01/2023] [Indexed: 07/30/2023] Open
Abstract
Clinical outcomes of deceased donor kidney transplants coming from diabetic donors currently remain inconsistent, possibly due to high heterogeneities in this population. Our study aimed to cluster recipients of diabetic deceased donor kidney transplants using an unsupervised machine learning approach in order to identify subgroups with high risk of inferior outcomes and potential variables associated with these outcomes. Consensus cluster analysis was performed based on recipient-, donor-, and transplant-related characteristics in 7876 recipients of diabetic deceased donor kidney transplants from 2010 to 2019 in the OPTN/UNOS database. We determined the important characteristics of each assigned cluster and compared the post-transplant outcomes between the clusters. Consensus cluster analysis identified three clinically distinct clusters. Recipients in cluster 1 (n = 2903) were characterized by oldest age (64 ± 8 years), highest rate of comorbid diabetes mellitus (55%). They were more likely to receive kidney allografts from donors that were older (58 ± 6.3 years), had hypertension (89%), met expanded criteria donor (ECD) status (78%), had a high rate of cerebrovascular death (63%), and carried a high kidney donor profile index (KDPI). Recipients in cluster 2 (n = 687) were younger (49 ± 13 years) and all were re-transplant patients with higher panel reactive antibodies (PRA) (88 [IQR 46, 98]) who received kidneys from younger (44 ± 11 years), non-ECD deceased donors (88%) with low numbers of HLA mismatch (4 [IQR 2, 5]). The cluster 3 cohort was characterized by first-time kidney transplant recipients (100%) who received kidney allografts from younger (42 ± 11 years), non-ECD deceased donors (98%). Compared to cluster 3, cluster 1 had higher incidence of primary non-function, delayed graft function, patient death and death-censored graft failure, whereas cluster 2 had higher incidence of delayed graft function and death-censored graft failure but comparable primary non-function and patient death. An unsupervised machine learning approach characterized diabetic donor kidney transplant patients into three clinically distinct clusters with differing outcomes. Our data highlight opportunities to improve utilization of high KDPI kidneys coming from diabetic donors in recipients with survival-limiting comorbidities such as those observed in cluster 1.
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Affiliation(s)
- Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Jing Miao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Shennen A Mao
- Division of Transplant Surgery, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Michael A Mao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Napat Leeaphorn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok 10400, Thailand
| | - Pattharawin Pattharanitima
- Department of Internal Medicine, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Supawit Tangpanithandee
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Pajaree Krisanapan
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Department of Internal Medicine, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Pitchaphon Nissaisorakarn
- Department of Medicine, Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | | | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
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Rawashdeh B, Kim J, AlRyalat SA, Prasad R, Cooper M. ChatGPT and Artificial Intelligence in Transplantation Research: Is It Always Correct? Cureus 2023; 15:e42150. [PMID: 37602076 PMCID: PMC10438857 DOI: 10.7759/cureus.42150] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2023] [Indexed: 08/22/2023] Open
Abstract
INTRODUCTION ChatGPT (OpenAI, San Francisco, California, United States) is a chatbot powered by language-based artificial intelligence (AI). It generates text based on the information provided by users. It is currently being evaluated in medical research, publishing, and healthcare. However, there has been no prior study on the evaluation of its ability to help in kidney transplant research. This feasibility study aimed to evaluate the application and accuracy of ChatGPT in the field of kidney transplantation. METHODS On two separate dates, February 21 and March 2, 2023, ChatGPT 3.5 was questioned regarding the medical treatment of kidney transplants and related scientific facts. The responses provided by the chatbot were compiled, and a panel of two specialists reviewed the correctness of each answer. RESULTS We demonstrated that ChatGPT possessed substantial general knowledge of kidney transplantation; however, they lacked sufficient information and had inaccurate information that necessitates a deeper understanding of the topic. Moreover, ChatGPT failed to provide references for any of the scientific data it provided regarding kidney transplants, and when requested for references, it provided inaccurate ones. CONCLUSION The results of this short feasibility study indicate that ChatGPT may have the ability to assist in data collecting when a particular query is posed. However, caution should be exercised and it should not be used in isolation as a supplement to research or decisions regarding healthcare because there are still challenges with data accuracy and missing information.
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Affiliation(s)
- Badi Rawashdeh
- Transplant Surgery, Medical College of Wisconsin, Milwaukee, USA
| | - Joohyun Kim
- Transplant Surgery, Medical College of Wisconsin, Milwaukee, USA
| | | | - Raj Prasad
- Transplant Surgery, Medical College of Wisconsin, Milwaukee, USA
| | - Matthew Cooper
- Transplant Surgery, Medical College of Wisconsin, Milwaukee, USA
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Gabrielsson A, Tromans S, Newman H, Triantafyllopoulou P, Hassiotis A, Bassett P, Watkins L, Sawhney I, Cooper M, Griffiths L, Pullen A, Roy A, Angus-Leppan H, Rh T, Kinney M, Tittensor P, Shankar R. Awareness of social care needs in people with epilepsy and intellectual disability. Epilepsy Behav 2023; 145:109296. [PMID: 37336133 DOI: 10.1016/j.yebeh.2023.109296] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/29/2023] [Accepted: 05/30/2023] [Indexed: 06/21/2023]
Abstract
BACKGROUND Nearly a quarter of people with intellectual disability (ID) have epilepsy with large numbers experiencing drug-resistant epilepsy, and premature mortality. To mitigate epilepsy risks the environment and social care needs, particularly in professional care settings, need to be met. PURPOSE To compare professional care groups as regards their subjective confidence and perceived responsibility when managing the need of people with ID and epilepsy. METHOD A multi-agency expert panel developed a questionnaire with embedded case vignettes with quantitative and qualitative elements to understand training and confidence in the health and social determinants of people with ID and epilepsy. The cross-sectional survey was disseminated amongst health and social care professionals working with people with ID in the UK using an exponential non-discriminative snow-balling methodology. Group comparisons were undertaken using suitable statistical tests including Fisher's exact, Kruskal-Wallis, and Mann-Whitney. Bonferroni correction was applied to significant (p < 0.05) results. Content analysis was conducted and relevant categories and themes were identified. RESULTS Social and health professionals (n = 54) rated their confidence to manage the needs of people with ID and epilepsy equally. Health professionals showed better awareness (p < 0.001) of the findings/recommendations of the latest evidence on premature deaths and identifying and managing epilepsy-related risks, including the relevance of nocturnal monitoring. The content analysis highlighted the need for clearer roles, improved care pathways, better epilepsy-specific knowledge, increased resources, and better multi-disciplinary work. CONCLUSIONS A gap exists between health and social care professionals in awareness of epilepsy needs for people with ID, requiring essential training and national pathways.
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Affiliation(s)
- A Gabrielsson
- Hertfordshire Partnership University NHS Trust, Hatfield, UK
| | - S Tromans
- University of Leicester, Leicester, UK; Leicestershire Partnership NHS Trust, Leicester, UK
| | - H Newman
- University of Plymouth Peninsula School of Medicine, Plymouth, UK
| | | | | | | | - L Watkins
- University of South Wales, Pontypridd, UK; Swansea Bay University Health Board, Port Talbot, UK
| | - I Sawhney
- Hertfordshire Partnership University NHS Trust, Hatfield, UK
| | - M Cooper
- National Development Team for Inclusion Bath, UK
| | - L Griffiths
- National Development Team for Inclusion Bath, UK
| | | | - A Roy
- Coventry and Warwickshire Partnership Trust, Birmingham, UK
| | | | | | - M Kinney
- Belfast Health and Social Trust, Belfast, UK
| | - P Tittensor
- Royal Wolverhampton NHS Trust, Wolverhampton, UK
| | - R Shankar
- University of Plymouth Peninsula School of Medicine, Plymouth, UK; Cornwall Partnership NHS Foundation Trust, Truro, UK.
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Thongprayoon C, Miao J, Jadlowiec CC, Mao SA, Mao MA, Vaitla P, Leeaphorn N, Kaewput W, Pattharanitima P, Tangpanithandee S, Krisanapan P, Nissaisorakarn P, Cooper M, Cheungpasitporn W. Differences between Very Highly Sensitized Kidney Transplant Recipients as Identified by Machine Learning Consensus Clustering. Medicina (Kaunas) 2023; 59:medicina59050977. [PMID: 37241209 DOI: 10.3390/medicina59050977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 05/10/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023]
Abstract
Background and Objectives: The aim of our study was to categorize very highly sensitized kidney transplant recipients with pre-transplant panel reactive antibody (PRA) ≥ 98% using an unsupervised machine learning approach as clinical outcomes for this population are inferior, despite receiving increased allocation priority. Identifying subgroups with higher risks for inferior outcomes is essential to guide individualized management strategies for these vulnerable recipients. Materials and Methods: To achieve this, we analyzed the Organ Procurement and Transplantation Network (OPTN)/United Network for Organ Sharing (UNOS) database from 2010 to 2019 and performed consensus cluster analysis based on the recipient-, donor-, and transplant-related characteristics in 7458 kidney transplant patients with pre-transplant PRA ≥ 98%. The key characteristics of each cluster were identified by calculating the standardized mean difference. The post-transplant outcomes were compared between the assigned clusters. Results: We identified two distinct clusters and compared the post-transplant outcomes among the assigned clusters of very highly sensitized kidney transplant patients. Cluster 1 patients were younger (median age 45 years), male predominant, and more likely to have previously undergone a kidney transplant, but had less diabetic kidney disease. Cluster 2 recipients were older (median 54 years), female predominant, and more likely to be undergoing a first-time transplant. While patient survival was comparable between the two clusters, cluster 1 had lower death-censored graft survival and higher acute rejection compared to cluster 2. Conclusions: The unsupervised machine learning approach categorized very highly sensitized kidney transplant patients into two clinically distinct clusters with differing post-transplant outcomes. A better understanding of these clinically distinct subgroups may assist the transplant community in developing individualized care strategies and improving the outcomes for very highly sensitized kidney transplant patients.
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Affiliation(s)
- Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Jing Miao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Shennen A Mao
- Division of Transplant Surgery, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Michael A Mao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Pradeep Vaitla
- Division of Nephrology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Napat Leeaphorn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok 10400, Thailand
| | - Pattharawin Pattharanitima
- Department of Internal Medicine, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Supawit Tangpanithandee
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Pajaree Krisanapan
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Department of Internal Medicine, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Pitchaphon Nissaisorakarn
- Department of Medicine, Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | | | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
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Smith JD, Agrawal A, Wicklund C, Duquette D, Friedewald J, Rasmussen LV, Gacki-Smith J, Tandon SD, Muhammad LN, Yancy CW, Dong S, Cooper M, Gilbert A, Shetty A, Gordon EJ. Implementation of a culturally competent APOL1 genetic testing programme into living donor evaluation: A two-site, non-randomised, pre-post trial design. BMJ Open 2023; 13:e067657. [PMID: 37188469 PMCID: PMC10186444 DOI: 10.1136/bmjopen-2022-067657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 04/14/2023] [Indexed: 05/17/2023] Open
Abstract
INTRODUCTION While living donor (LD) kidney transplantation is the optimal treatment for patients with kidney failure, LDs assume a higher risk of future kidney failure themselves. LDs of African ancestry have an even greater risk of kidney failure post-donation than White LDs. Because evidence suggests that Apolipoprotein L1 (APOL1) risk variants contribute to this greater risk, transplant nephrologists are increasingly using APOL1 genetic testing to evaluate LD candidates of African ancestry. However, nephrologists do not consistently perform genetic counselling with LD candidates about APOL1 due to a lack of knowledge and skill in counselling. Without proper counselling, APOL1 testing will magnify LD candidates' decisional conflict about donating, jeopardising their informed consent. Given cultural concerns about genetic testing among people of African ancestry, protecting LD candidates' safety is essential to improve informed decisions about donating. Clinical 'chatbots', mobile apps that provide genetic information to patients, can improve informed treatment decisions. No chatbot on APOL1 is available and no nephrologist training programmes are available to provide culturally competent counselling to LDs about APOL1. Given the shortage of genetic counsellors, increasing nephrologists' genetic literacy is critical to integrating genetic testing into practice. METHODS AND ANALYSIS Using a non-randomised, pre-post trial design in two transplant centres (Chicago, IL, and Washington, DC), we will evaluate the effectiveness of culturally competent APOL1 testing, chatbot and counselling on LD candidates' decisional conflict about donating, preparedness for decision-making, willingness to donate and satisfaction with informed consent and longitudinally evaluate the implementation of this intervention into clinical practice using the Reach, Effectiveness, Adoption, Implementation and Maintenance framework. ETHICS AND DISSEMINATION This study will create a model for APOL1 testing of LDs of African ancestry, which can be implemented nationally via implementation science approaches. APOL1 will serve as a model for integrating culturally competent genetic testing into transplant and other practices to improve informed consent. This study involves human participants and was approved by Northwestern University IRB (STU00214038). Participants gave informed consent to participate in the study before taking part. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT04910867. Registered 8 May 2021, https://register. CLINICALTRIALS gov/prs/app/action/SelectProtocol?sid=S000AWZ6&selectaction=Edit&uid=U0001PPF&ts=7&cx=-8jv7m2 ClinicalTrials.gov Identifier: NCT04999436. Registered 5 November 2021, https://register. CLINICALTRIALS gov/prs/app/action/SelectProtocol?sid=S000AYWW&selectaction=Edit&uid=U0001PPF&ts=11&cx=9tny7v.
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Affiliation(s)
- Justin D Smith
- Department of Population Health Sciences, Spencer Fox Eccles School of Medicine at the University of Utah, Salt Lake City, Utah, USA
- Departments of Psychiatry and Behavioral Sciences and Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Akansha Agrawal
- Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Catherine Wicklund
- Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Debra Duquette
- Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - John Friedewald
- Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Luke V Rasmussen
- Division of Health and Biomedical Informatics, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Jessica Gacki-Smith
- Center for Health Services and Outcomes Research, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - S Darius Tandon
- Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Lutfiyya N Muhammad
- Department of Preventive Medicine-Division of Biostatistics, Northwestern University, Chicago, Illinois, USA
| | - Clyde W Yancy
- Department of Medicine-Division of Cardiology, Northwestern University, Evanston, Illinois, USA
| | - Siyuan Dong
- Department of Preventive Medicine-Division of Biostatistics, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Matthew Cooper
- Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Alexander Gilbert
- Medicine, Georgetown University Medical Center, Washington, District of Columbia, USA
| | - Aneesha Shetty
- Medicine, The University of Arizona College of Medicine Tucson, Tucson, Arizona, USA
| | - Elisa J Gordon
- Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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Cooper M, Flynn D, Avery L, Ashley K, Jordan C, Errington L, Scott J. Service user perspectives on social prescribing services for mental health in the UK: a systematic review. Perspect Public Health 2023; 143:135-144. [PMID: 37232248 DOI: 10.1177/17579139231170786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
AIM To thematically synthesise adult service users' perspectives on how UK-based social prescribing services support them with their mental health management. METHODS Nine databases were systematically searched up to March 2022. Eligible studies were qualitative or mixed methods studies involving participants aged ⩾ 18 years accessing social prescribing services primarily for mental health reasons. Thematic synthesis was applied to qualitative data to create descriptive and analytical themes. RESULTS 51,965 articles were identified from electronic searches. Six studies were included in the review (n = 220 participants) with good methodological quality. Five studies utilised a link worker referral model, and one study a direct referral model. Modal reasons for referral were social isolation and/or loneliness (n = 4 studies). Two analytical themes were formulated from seven descriptive themes: (1) person-centred care was key to delivery and (2) creating an environment for personal change and development. CONCLUSIONS This review provides a synthesis of the qualitative evidence on service users' experiences of accessing and using social prescribing services to support their mental health management. Adherence to principles of person-centred care and addressing the holistic needs of service users (including devoting attention to the quality of the therapeutic environment) are important for design and delivery of social prescribing services. This will optimise service user satisfaction and other outcomes that matter to them.
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Affiliation(s)
- M Cooper
- School of Health and Life Sciences, Teesside University, Tees Valley TS1 3BX, UK
| | - D Flynn
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
| | - L Avery
- School of Health and Life Sciences, Teesside University, Tees Valley, UK
| | - K Ashley
- School of Health and Life Sciences, Teesside University, Tees Valley, UK
| | - C Jordan
- School of Health and Life Sciences, Teesside University, Tees Valley, UK
| | - L Errington
- School of Biomedical, Nutritional, and Sport Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - J Scott
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
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Selim MA, Krepline A, Eriksen C, Murphy P, Cooper M. The transplant ureter causing small bowel obstruction following intraperitoneal kidney transplantation: a case report. J Surg Case Rep 2023; 2023:rjad218. [PMID: 37114084 PMCID: PMC10125840 DOI: 10.1093/jscr/rjad218] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/18/2023] [Indexed: 04/29/2023] Open
Abstract
Internal bowel herniation under the ureter of an intraperitoneally transplanted kidney is a rare complication yet carries a high burden of morbidity and potential mortality if not recognized and managed appropriately. We describe a case where early intervention salvaged the bowel without ureteral injury. We also describe a technique to close the space beneath the ureter to prevent further episodes of internal herniation.
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Affiliation(s)
- Motaz A Selim
- Correspondence address. Division of Transplant Surgery, Medical College of Wisconsin, 9200 W, Wisconsin Ave, CFAC Building, 2nd floor, Milwaukee, WI 53226, USA. Tel: +1 4148056400; Fax: +1 4148054343; E-mail:
| | | | - Calvin Eriksen
- Department of Surgery, Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Patrick Murphy
- Department of Surgery, Division of Trauma and Acute Care Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Matthew Cooper
- Department of Surgery, Division of Transplant Surgery, Medical College of Wisconsin, Milwaukee, WI, USA
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Jessula S, Cote CL, Cooper M, McDougall G, Kivell M, Kim Y, Tansley G, Casey P, Smith M, Herman C. Dying to Get There: Patients Who Reside at Increased Distance from Tertiary Center Experience Increased Mortality Following Abdominal Aortic Aneurysm Rupture. Ann Vasc Surg 2023; 91:135-144. [PMID: 36481675 DOI: 10.1016/j.avsg.2022.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/26/2022] [Accepted: 11/05/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Centralization of vascular surgery care for Ruptured Abdominal Aortic Aneurysms (RAAAs) to high-volume tertiary centers may hinder access to timely surgical intervention for patients in remote areas. The objective of this study was to determine the association between distance from vascular care and mortality from RAAAs in the province of Nova Scotia, Canada. METHODS A retrospective cohort study of all RAAAs in Nova Scotia between 2005 and 2015 was performed through linkage of administrative databases. Patients were divided into groups by estimated travel time from their place of residence to the tertiary center (<1 hr and ≥1 hr) using geographic information software. Baseline and operative characteristics were identified for all patients through available databases and completed through chart review. Mortality at home, during transfer to the vascular center, and overall 30-day mortality were compared between groups using t-test and chi-squared test, as appropriate. Multivariable logistic regression analysis was used to calculate the independent effect of travel time on survival outcomes. RESULTS A total of 567 patients with RAAA were identified from 2005-2015, of which 250 (44%) resided <1 hr travel time to the tertiary center and 317 (56%) resided ≥1 hr. On multivariable analysis, travel time ≥1 hr from vascular care was an independent predictor of mortality at home (odds ratio [OR] 1.68, 95% confidence interval [CI] 1.07-2.63, P = 0.02), mortality prior to operation (OR 2.64, 95% CI 1.81-3.83, P < 0.001), and overall 30-day mortality (OR 1.61, 95% CI 1.10-2.37, P = 0.02). In patients who received an operation (n = 294), there was no association between increased travel time and mortality (OR 1.02, 95% CI 0.60-1.73, P = 0.94). CONCLUSIONS Travel time ≥1 hr to the tertiary center is associated with significantly higher mortality from ruptured abdominal aortic aneurysm (AAA). However, there was no difference in overall chance of survival between groups for patients that underwent AAA repair. Therefore, strategies to facilitate early detection, and timely transfer to a vascular surgery center may improve outcomes for patients with RAAA.
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Affiliation(s)
- Samuel Jessula
- Division of Vascular and Endovascular Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
| | - Claudia L Cote
- Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, Canada
| | - Matthew Cooper
- Faculty of Medicine, Dalhousie University, Halifax, Canada
| | | | - Matthew Kivell
- Faculty of Medicine, Dalhousie University, Halifax, Canada
| | - Young Kim
- Division of Vascular and Endovascular Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Gavin Tansley
- Divison of Critical Care, University of British Columbia, Vancouver, Canada
| | - Patrick Casey
- Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, Canada
| | - Matthew Smith
- Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, Canada
| | - Christine Herman
- Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, Canada; Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, Canada
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Jessula S, Cote CL, Kim Y, Cooper M, McDougall G, Casey P, Lee MS, Smith M, Dua A, Herman C. Effect of after-hours presentation in ruptured abdominal aortic aneurysm. J Vasc Surg 2023; 77:1045-1053.e3. [PMID: 36343873 DOI: 10.1016/j.jvs.2022.10.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/28/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Ruptured abdominal aortic aneurysms (RAAAs) are surgical emergencies that require immediate and expert treatment. It has been unclear whether presentation during evenings and weekends, when "on call" teams are primarily responsible for patient care, is associated with worse outcomes. Our objective was to evaluate the outcomes of patients presenting with RAAAs after-hours vs during the workday. METHODS A retrospective cohort study of all RAAAs in Nova Scotia between 2005 and 2015 was performed through linkage of administrative databases. Patients who had presented to the hospital with RAAAs during the workday (Monday through Friday, 6 am to 6 pm) were compared with those who had presented after-hours (6 pm to 6 am during the week and on weekends). The baseline and operative characteristics were identified for all patients through the available databases and a review of the medical records. Mortality before surgery, 30-day mortality, and operative mortality were compared between groups using multivariable logistic regression, adjusting for factors clinically significant on univariable analysis. RESULTS A total of 390 patients with RAAAs were identified from 2005 to 2015, of whom 205 (53%) had presented during the workday and 185 (47%) after-hours. The overall chance of survival (OCS) was 45% overall, 49% if admitted to hospital, and 64% if surgery had been performed. During the workday, the OCS was 43% overall, 48% if admitted to hospital, and 67% if surgery had been performed. After-hours, the OCS was 46% overall, 49% if admitted to hospital, and 61% if surgery had been performed. Mortality before surgery was increased for patients who had presented to the hospital during the workday compared with after-hours (36% vs 26%; P = .04). The 30-day mortality (57% vs 54%; P = .62), rates of operative management (63% vs 72%; P = .06), and operative mortality (33% vs 39%; P = .33) were similar between the workday and after-hours groups (57% vs 54%; P = .06). After adjusting for significant clinical variables, the patients who had presented with RAAAs after-hours had had a similar odds of dying before surgery (odds ratio [OR], 0.64; 95% confidence interval [CI], 0.41-1.03), operative management (OR, 1.47; 95% CI, 0.93-2.31), 30-day mortality (OR, 0.98; 95% CI, 0.63-1.51), and operative mortality (OR, 1.33; 95% CI, 0.78-2.26). In the subgroup of patients presenting to a hospital with endovascular capabilities, patients presenting after-hours had had similar odds of 30-day mortality (OR, 1.07; 95% CI, 0.57-2.02), and operative mortality (OR, 1.14; 95% CI, 0.58-2.23). CONCLUSIONS We found that patients presenting to the hospital with RAAAs after-hours did not have increased adjusted odds of mortality before surgery, operative management, 30-day mortality, or operative mortality.
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Affiliation(s)
- Samuel Jessula
- Division of Vascular and Endovascular Surgery, Harvard Medical School, Massachusetts General Hospital, Boston, MA.
| | - Claudia L Cote
- Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS, Canada
| | - Young Kim
- Division of Vascular and Endovascular Surgery, Duke University Medical Center, Durham, NC
| | - Matthew Cooper
- Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Garrett McDougall
- Department of Emergency Medicine, McMaster University, Hamilton, ON, Canada
| | - Patrick Casey
- Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS, Canada
| | - Min S Lee
- Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS, Canada
| | - Matthew Smith
- Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS, Canada
| | - Anahita Dua
- Division of Vascular and Endovascular Surgery, Harvard Medical School, Massachusetts General Hospital, Boston, MA
| | - Christine Herman
- Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS, Canada; Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS, Canada
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Yoo A, Riedel A, Qian I, Bartosic A, Soltani R, Kibria G, Haririan A, Drachenberg CB, Abrams PL, Odorico JS, Cooper M, Bromberg JS, Scalea JR. An Initial Analysis of the Baseline Levels of Dd-cfDNA After Pancreas Transplantation: A Prospective Study From High-volume Centers in the United States. Transplant Direct 2023; 9:e1459. [PMID: 36935870 PMCID: PMC10019258 DOI: 10.1097/txd.0000000000001459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 01/19/2023] [Accepted: 01/22/2023] [Indexed: 03/17/2023] Open
Abstract
Pancreas transplantation offers patients with diabetes an opportunity for glucose homeostasis. Current blood tests to surveil for rejection have poor sensitivity and specificity for identifying rejection, and pancreas biopsies are challenging and associated with morbidity and graft loss. Donor-derived cell-free DNA (dd-cfDNA) is shed from transplanted organs and detectable in peripheral blood. Thus, a potential dd-cfDNA blood test assessing rejection would be clinically advantageous. Methods One hundred eighty-one dd-cfDNA samples (n) were collected from 77 patients (N) up to 132 mo posttransplant. Results The median dd-cfDNA level among all subjects was 0.28% (0.13%, 0.71%). In simultaneous pancreas-kidney (SPK) transplant recipients, the median dd-cfDNA level was 0.29% (0.13%, 0.71%), and it was 0.23% (0.08%, 0.71%) in pancreas transplant alone (PTA) recipients. When isolating for when without infection or rejection, the median dd-cfDNA level was 0.28% (0.13%, 0.64%) for SPK and 0.20% (0.00%, 0.32%) for PTA. Both transplant types approached 1.0% ≤1 mo posttransplant followed by a decrease in median dd-cfDNA. During episodes of rejection or infection, median dd-cfDNA levels were greater among all transplant types. Conclusions The mean dd-cfDNA level for all pancreas transplant recipients is <1.0%, consistent with the published kidney transplant rejection threshold (>1.0%), regardless of SPK or PTA. Early posttransplant dd-cfDNA levels are transiently higher than later measurements. Dd-cfDNA elevation also correlates with rejection and infection and thus is a promising biomarker for surveilling pancreas transplant dysfunction.
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Affiliation(s)
- Ashley Yoo
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Alexandria Riedel
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Ian Qian
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Amanda Bartosic
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Rudi Soltani
- Division of Transplantation, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Gulam Kibria
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Abdolreza Haririan
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Cinthia B. Drachenberg
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | | | - Jon S. Odorico
- Division of Transplantation, Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | | | - Jonathan S. Bromberg
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
| | - Joseph R. Scalea
- Division of Transplant Surgery, Department of Surgery, University of Maryland School of Medicine, Baltimore, MD
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Thongprayoon C, Vaitla P, Jadlowiec CC, Leeaphorn N, Mao SA, Mao MA, Qureshi F, Kaewput W, Qureshi F, Tangpanithandee S, Krisanapan P, Pattharanitima P, Acharya PC, Nissaisorakarn P, Cooper M, Cheungpasitporn W. Distinct Phenotypes of Non-Citizen Kidney Transplant Recipients in the United States by Machine Learning Consensus Clustering. Medicines (Basel) 2023; 10:medicines10040025. [PMID: 37103780 PMCID: PMC10144541 DOI: 10.3390/medicines10040025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 03/24/2023] [Indexed: 04/28/2023]
Abstract
BACKGROUND Better understanding of the different phenotypes/subgroups of non-U.S. citizen kidney transplant recipients may help the transplant community to identify strategies that improve outcomes among non-U.S. citizen kidney transplant recipients. This study aimed to cluster non-U.S. citizen kidney transplant recipients using an unsupervised machine learning approach; Methods: We conducted a consensus cluster analysis based on recipient-, donor-, and transplant- related characteristics in non-U.S. citizen kidney transplant recipients in the United States from 2010 to 2019 in the OPTN/UNOS database using recipient, donor, and transplant-related characteristics. Each cluster's key characteristics were identified using the standardized mean difference. Post-transplant outcomes were compared among the clusters; Results: Consensus cluster analysis was performed in 11,300 non-U.S. citizen kidney transplant recipients and identified two distinct clusters best representing clinical characteristics. Cluster 1 patients were notable for young age, preemptive kidney transplant or dialysis duration of less than 1 year, working income, private insurance, non-hypertensive donors, and Hispanic living donors with a low number of HLA mismatch. In contrast, cluster 2 patients were characterized by non-ECD deceased donors with KDPI <85%. Consequently, cluster 1 patients had reduced cold ischemia time, lower proportion of machine-perfused kidneys, and lower incidence of delayed graft function after kidney transplant. Cluster 2 had higher 5-year death-censored graft failure (5.2% vs. 9.8%; p < 0.001), patient death (3.4% vs. 11.4%; p < 0.001), but similar one-year acute rejection (4.7% vs. 4.9%; p = 0.63), compared to cluster 1; Conclusions: Machine learning clustering approach successfully identified two clusters among non-U.S. citizen kidney transplant recipients with distinct phenotypes that were associated with different outcomes, including allograft loss and patient survival. These findings underscore the need for individualized care for non-U.S. citizen kidney transplant recipients.
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Affiliation(s)
- Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Pradeep Vaitla
- Division of Nephrology, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | | | - Napat Leeaphorn
- Renal Transplant Program, University of Missouri-Kansas City School of Medicine/Saint Luke's Health System, Kansas City, MO 64108, USA
| | - Shennen A Mao
- Division of Transplant Surgery, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Michael A Mao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, FL 32224, USA
| | - Fahad Qureshi
- School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA
| | - Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok 10400, Thailand
| | - Fawad Qureshi
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Supawit Tangpanithandee
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Pajaree Krisanapan
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok 10400, Thailand
| | - Pattharawin Pattharanitima
- Division of Nephrology, Department of Internal Medicine, Faculty of Medicine Thammasat University, Pathum Thani 12120, Thailand
| | - Prakrati C Acharya
- Division of Nephrology, Texas Tech Health Sciences Center El Paso, El Paso, TX 79905, USA
| | - Pitchaphon Nissaisorakarn
- Department of Medicine, Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Matthew Cooper
- Medstar Georgetown Transplant Institute, Georgetown University School of Medicine, Washington, DC 21042, USA
| | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
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Johnston BC, Zeraatkar D, Steen J, de Jauregui DRF, Zhu H, Sun M, Cooper M, Maraj M, Prokop-Dorner A, Reyes BC, Valli C, Storman D, Karam G, Zajac J, Ge L, Swierz MJ, Ghosh N, Vernooij RWM, Chang Y, Zhao Y, Thabane L, Guyatt GH, Alonso-Coello P, Hooper L, Bala MM. Saturated fat and human health: a protocol for a methodologically innovative systematic review and meta-analysis to inform public health nutrition guidelines. Syst Rev 2023; 12:39. [PMID: 36918997 PMCID: PMC10012519 DOI: 10.1186/s13643-023-02209-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 03/01/2023] [Indexed: 03/15/2023] Open
Abstract
BACKGROUND The health effects of dietary fats are a controversial issue on which experts and authoritative organizations have often disagreed. Care providers, guideline developers, policy-makers, and researchers use systematic reviews to advise patients and members of the public on optimal dietary habits, and to formulate public health recommendations and policies. Existing reviews, however, have serious limitations that impede optimal dietary fat recommendations, such as a lack of focus on outcomes important to people, substantial risk of bias (RoB) issues, ignoring absolute estimates of effects together with comprehensive assessments of the certainty of the estimates for all outcomes. OBJECTIVE We therefore propose a methodologically innovative systematic review using direct and indirect evidence on diet and food-based fats (i.e., reduction or replacement of saturated fat with monounsaturated or polyunsaturated fat, or carbohydrates or protein) and the risk of important health outcomes. METHODS We will collaborate with an experienced research librarian to search MEDLINE, EMBASE, CINAHL, and the Cochrane Database of Systematic Reviews (CDSR) for randomized clinical trials (RCTs) addressing saturated fat and our health outcomes of interest. In duplicate, we will screen, extract results from primary studies, assess their RoB, conduct de novo meta-analyses and/or network meta-analysis, assess the impact of missing outcome data on meta-analyses, present absolute effect estimates, and assess the certainty of evidence for each outcome using the GRADE contextualized approach. Our work will inform recommendations on saturated fat based on international standards for reporting systematic reviews and guidelines. CONCLUSION Our systematic review and meta-analysis will provide the most comprehensive and rigorous summary of the evidence addressing the relationship between saturated fat modification for people-important health outcomes. The evidence from this review will be used to inform public health nutrition guidelines. TRIAL REGISTRATION PROSPERO Registration: CRD42023387377 .
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Affiliation(s)
- Bradley C Johnston
- Department of Nutrition, College of Agriculture and Life Science, Texas A&M University, College Station, TX, USA. .,Department of Epidemiology and Biostatistics, School of Public Health, College Station, TX, USA.
| | - Dena Zeraatkar
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA.,Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Jeremy Steen
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Diego Rada Fernandez de Jauregui
- Preventive Medicine and Public Health Department, School of Pharmacy, University of the Basque Country/Euskal Herriko Unibertsitatea (UPV/EHU), Vitoria-Gasteiz, Spain.,Department of Nutrition, Texas A&M University, College Station, TX, USA
| | - Hongfei Zhu
- Evidence Based Social Science Research Centre, School of Public Health, Lanzhou University, Lanzhou, China.,Department of Social Medicine and Health Management, School of Public Health, Lanzhou University, Lanzhou, China
| | - Mingyao Sun
- Evidence Based Nursing Centre, School of Nursing, Lanzhou University, Lanzhou, China
| | - Matthew Cooper
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Malgorzata Maraj
- Department of Hygiene and Dietetics, Chair of Epidemiology and Preventive Medicine, Jagiellonian University Medical College, Jagiellonian University Medical College, Krakow, Poland
| | - Anna Prokop-Dorner
- Department of Medical Sociology, Chair of Epidemiology and Preventive Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Boris Castro Reyes
- Iberoamerican Cochrane Centre, Biomedical Research Institute San Pau (IIB Sant Pau), Barcelona, Spain
| | - Claudia Valli
- Iberoamerican Cochrane Centre, Biomedical Research Institute San Pau (IIB Sant Pau), Barcelona, Spain.,Department of Paediatrics, Obstetrics, Gynaecology and Preventive Medicine, Universidad Autónoma de Barcelona, Barcelona, Spain
| | - Dawid Storman
- Department of Hygiene and Dietetics, Chair of Epidemiology and Preventive Medicine, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland.,Systematic Reviews Unit, Jagiellonian University Medical College, Krakow, Poland.,Department of Adult Psychiatry, University Hospital, Krakow, Poland
| | - Giorgio Karam
- Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Joanna Zajac
- Department of Hygiene and Dietetics, Chair of Epidemiology and Preventive Medicine, Jagiellonian University Medical College, Jagiellonian University Medical College, Krakow, Poland
| | - Long Ge
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.,Evidence Based Social Science Research Centre, School of Public Health, Lanzhou University, Lanzhou, China.,Department of Social Medicine and Health Management, School of Public Health, Lanzhou University, Lanzhou, China
| | - Mateusz J Swierz
- Department of Hygiene and Dietetics, Chair of Epidemiology and Preventive Medicine, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland.,Systematic Reviews Unit, Jagiellonian University Medical College, Krakow, Poland
| | - Nirjhar Ghosh
- Department of Nutrition, Texas A&M University, College Station, TX, USA
| | - Robin W M Vernooij
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands.,Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Yaping Chang
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Yunli Zhao
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.,The Center of Gerontology and Geriatrics (National Clinical Research Center for Geriatrics), West China Hospital, Sichuan University, Chengdu, China
| | - Lehana Thabane
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Gordon H Guyatt
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada.,Department of Medicine, Faculty of Health Sciences, Hamilton, ON, Canada
| | - Pablo Alonso-Coello
- Iberoamerican Cochrane Centre, Biomedical Research Institute San Pau (IIB Sant Pau), Barcelona, Spain.,CIBER de Epidemiología Y Salud Pública (CIBERESP), Madrid, Spain
| | - Lee Hooper
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Malgorzata M Bala
- Department of Hygiene and Dietetics, Chair of Epidemiology and Preventive Medicine, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland.,Systematic Reviews Unit, Jagiellonian University Medical College, Krakow, Poland
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Pillai A, Verna EC, Parikh ND, Cooper M, Thiessen C, Heimbach J, Gordon EJ, Sapisochin G, Selzner N, Mathur A, Perito ER, Jesse M, Liapakis A, Kumar V. Financial, policy, and ethical barriers to the expansion of living donor liver transplant: Meeting report from a living donor liver transplant consensus conference. Clin Transplant 2023:e14955. [PMID: 36880375 DOI: 10.1111/ctr.14955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/15/2023] [Accepted: 02/25/2023] [Indexed: 03/08/2023]
Abstract
INTRODUCTION In October 2021, the American Society of Transplantation (AST) hosted a virtual consensus conference aimed at identifying and addressing barriers to the broader, safe expansion of living donor liver transplantation (LDLT) throughout the United States (US). METHODS A multidisciplinary group of LDLT experts convened to address issues related to financial implications on the donor, transplant center crisis management, regulatory and oversight policies, and ethical considerations by assessing the relative significance of issues in preventing LDLT growth, with proposed strategies to overcome barriers. RESULTS Living liver donors endure multiple obstacles including financial instability, loss of job security, and potential morbidity. These concerns, along with other center, state, and federal specific policies can be perceived as significant barriers to expanding LDLT. Donor safety is of paramount importance to the transplant community; however, regulatory and oversight policies aimed at ensuring donor safety can be viewed as ambiguous and complicated leading to time-consuming evaluations that may deter donor motivation and program expansion. CONCLUSION Transplant programs need to establish appropriate crisis management plans to mitigate potential negative donor outcomes and ensure program viability and stability. Finally, ethical aspects, including informed consent for high-risk recipients and use of non-directed donors, can be perceived as additional barriers to expanding LDLT.
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Affiliation(s)
- Anjana Pillai
- Department of Medicine, University of Chicago Medicine, Chicago, Illinois, USA
| | - Elizabeth C Verna
- Center for Liver Disease and Transplantation, Columbia University, New York, USA
| | - Neehar D Parikh
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, Michigan, USA
| | - Matthew Cooper
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Carrie Thiessen
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Julie Heimbach
- Division of Transplant Surgery, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Elisa J Gordon
- Department of Surgery, Center for Biomedical Ethics and Society, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Gonzalo Sapisochin
- Ajmera Transplant Program & HPB Surgical Oncology, Division of General Surgery, Toronto General Hospital, Toronto, Ontario, Canada
| | - Nazia Selzner
- Ajmera Transplant Center, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Amit Mathur
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic Arizona, Phoenix, Arizona, USA
| | - Emily R Perito
- Department of Pediatrics, Department of Epidemiology and Biostatistics, University of California, San Francisco, USA
| | - Michelle Jesse
- Transplant Institute, Henry Ford Health System, Detroit, Michigan, USA
| | | | - Vineeta Kumar
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
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41
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McDougall G, Jessula S, Cote CL, Cooper M, Lee M, Smith M, Casey P, Herman C. Effect of socioeconomic status on patients undergoing elective abdominal aortic aneurysm repair in a publicly funded health care system. Can J Surg 2023; 66:E114-E122. [PMID: 36882205 PMCID: PMC9998101 DOI: 10.1503/cjs.015321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/26/2022] [Indexed: 03/09/2023] Open
Abstract
BACKGROUND The association between socioeconomic status (SES) and outcomes after abdominal aortic aneurysm (AAA) repair in publicly funded health care systems is poorly described. The purpose of this study was to determine the effect of SES on postoperative outcomes in patients who underwent AAA repair in Nova Scotia, Canada. METHODS We performed a retrospective analysis of all elective AAA repairs in Nova Scotia between November 2005 and March 2015 using administrative data sources. We compared postoperative 30-day outcomes and long-term survival across socio-economic quintiles, defined as the Pampalon Material Deprivation Index (MDI) and Social Deprivation Index (SDI). We also compared the relation between baseline characteristics, MDI quintile, SDI quintile and 30-day mortality. We used multivariable logistic regression and survival analysis to calculate adjusted 30-day mortality and long-term survival, respectively. RESULTS A total of 1913 patients underwent AAA repair during the study period. The overall 30-day mortality rate was 2.6% (50 patients). Thirty-day outcomes including death (p = 0.8), stroke (p = 0.7), myocardial infarction (p = 0.06), length of stay (p = 0.3) and discharge disposition other than home (p = 0.8) were similar across MDI quintiles. Similarly, there was no statistically significant association between SDI quintile and postoperative outcomes. Multivariable analysis showed that age greater than 70 years (odds ratio [OR] 3.06, 95% confidence interval [CI] 1.55-6.06) and open repair (OR 3.22, 95% CI 1.59-6.52) but not MDI quintile (p = NS) or SDI quintile (p = NS) were associated with increased 30-day mortality. There was no effect of MDI or SDI quintile on long-term survival on univariable or multivariable analysis. CONCLUSION Socioeconomic status does not appear to affect short- or long-term mortality after AAA repair in a publicly funded health care system. Further research is needed to address any existing gaps in screening and referral before repair.
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Affiliation(s)
- Garrett McDougall
- From the Faculty of Medicine, Dalhousie University, Halifax, NS (McDougall, Cooper); the Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Jessula, Herman); the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Cote); and the Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Lee, Smith, Casey, Herman)
| | - Samuel Jessula
- From the Faculty of Medicine, Dalhousie University, Halifax, NS (McDougall, Cooper); the Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Jessula, Herman); the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Cote); and the Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Lee, Smith, Casey, Herman)
| | - Claudia L Cote
- From the Faculty of Medicine, Dalhousie University, Halifax, NS (McDougall, Cooper); the Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Jessula, Herman); the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Cote); and the Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Lee, Smith, Casey, Herman)
| | - Matthew Cooper
- From the Faculty of Medicine, Dalhousie University, Halifax, NS (McDougall, Cooper); the Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Jessula, Herman); the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Cote); and the Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Lee, Smith, Casey, Herman)
| | - Min Lee
- From the Faculty of Medicine, Dalhousie University, Halifax, NS (McDougall, Cooper); the Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Jessula, Herman); the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Cote); and the Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Lee, Smith, Casey, Herman)
| | - Matthew Smith
- From the Faculty of Medicine, Dalhousie University, Halifax, NS (McDougall, Cooper); the Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Jessula, Herman); the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Cote); and the Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Lee, Smith, Casey, Herman)
| | - Patrick Casey
- From the Faculty of Medicine, Dalhousie University, Halifax, NS (McDougall, Cooper); the Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Jessula, Herman); the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Cote); and the Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Lee, Smith, Casey, Herman)
| | - Christine Herman
- From the Faculty of Medicine, Dalhousie University, Halifax, NS (McDougall, Cooper); the Division of General Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Jessula, Herman); the Division of Cardiac Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Cote); and the Division of Vascular Surgery, Department of Surgery, Dalhousie University, Halifax, NS (Lee, Smith, Casey, Herman)
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Jadlowiec CC, Hippen B, Gill J, Heilman R, Stewart D, Reddy KS, Mohan S, Wiseman A, Cooper M. Current opinions on DGF management practices: A survey of the United States and Canada. Clin Transplant 2023; 37:e14949. [PMID: 36849704 DOI: 10.1111/ctr.14949] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/24/2022] [Accepted: 02/18/2023] [Indexed: 03/01/2023]
Abstract
INTRODUCTION Significant center-to-center variation in attitudes and management of delayed graft function (DGF) remains common. METHODS A survey to describe current DGF practices was developed by workgroup members sponsored by the National Kidney Foundation (NKF) and was distributed to both the NKF DGF workgroup members, kidney transplant program directors and the transplant community within the United States and Canada. Seventy-one percent of NKF workgroup members completed the survey along with 70 unique the United States and three Canadian kidney transplant programs. All Organ Procurement and Transplantation Network (OPTN) regions were represented. RESULTS DGF was reported to occur at rate of 20%-40% for most centers with 3.9% indicating their incidence to be >60%. Most centers reported longer hospital lengths of stay and more frequent outpatient visits. Despite the commonality of DGF, only half of centers reported having an established protocol to manage DGF. Kidney allograft biopsies were the only consistent DGF management strategy observed, although use of machine perfusion was also heavily favored. Other DGF management strategies voiced by a minority included having established outpatient practices to care for DGF patients and administering outpatient community-based hemodialysis. CONCLUSION Although approximately a third of survey responders indicated that risk of DGF played a role in their willingness to accept organs, most did not feel that increased cost or clinical impact on outcomes was a deterrent. Future strategies, including broader sharing of best practices, redefining terminology specific to DGF, the establishment of DGF dialysis guidelines and improving access to machine perfusion across OPOs may help reduce discard and improve utilization of kidneys at risk for DGF.
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Affiliation(s)
- Caroline C Jadlowiec
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | - Benjamin Hippen
- Global Medical Office, Fresenius Medical Care, Charlotte, North Carolina, USA
| | - John Gill
- Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Darren Stewart
- United Network for Organ Sharing, Richmond, Virginia, USA
| | - Kunam S Reddy
- Division of Transplant Surgery, Department of Surgery, Mayo Clinic, Phoenix, Arizona, USA
| | - Sumit Mohan
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians & Surgeons, New York, New York, USA
| | - Alex Wiseman
- Division of Nephrology, University of Colorado, Denver, Colorado, USA
| | - Matthew Cooper
- Division of Transplant Surgery, MedStar Georgetown Transplant Institute, Washington, District of Columbia, USA
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Roll GR, Bray RA, Cooper M, Eagar TN, Gebel HM, Vranic GM, Hitchman KM, Houp J, Kamoun M, Killian J, Kim J, Kumar V, Levine M, Lovasik BP, Lunow-Luke T, Parsons RF, Pattanayak V, Ranch D, Shah A, Stock PG, Timofeeva OA, Trofe-Clark J, Wongjirad C, Yeh H, Yi S, Rajalingam R. COVID-19 infection and vaccination rarely impact HLA antibody profile in waitlisted renal transplant Candidates- a multicenter cohort. Hum Immunol 2023; 84:278-285. [PMID: 36868898 PMCID: PMC9946887 DOI: 10.1016/j.humimm.2023.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/18/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023]
Abstract
Although rare, infection and vaccination can result in antibodies to human leukocyte antigens (HLA). We analyzed the effect of SARS-CoV-2 infection or vaccination on HLA antibodies in waitlisted renal transplant candidates. Specificities were collected and adjudicated if the calculated panel reactive antibodies (cPRA) changed after exposure. Of 409 patients, 285 (69.7 %) had an initial cPRA of 0 %, and 56 (13.7 %) had an initial cPRA > 80 %. The cPRA changed in 26 patients (6.4 %), 16 (3.9 %) increased, and 10 (2.4 %) decreased. Based on cPRA adjudication, cPRA differences generally resulted from a small number of specificities with subtle fluctuations around the borderline of the participating centers' cutoff for unacceptable antigen listing. All five COVID recovered patients with an increased cPRA were female (p = 0.02). In summary, exposure to this virus or vaccine does not increase HLA antibody specificities and their MFI in approximately 99 % of cases and 97 % of sensitized patients. These results have implications for virtual crossmatching at the time of organ offer after SARS-CoV-2 infection or vaccination, and these events of unclear clinical significance should not influence vaccination programs.
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Affiliation(s)
- Garrett R. Roll
- Department of Surgery, University of California San Francisco, San Francisco, CA, United States
| | - Robert A. Bray
- Histocompatibility and Molecular Immunogenetics Laboratory, Emory University, Atlanta, GA, United States
| | - Matthew Cooper
- Medstar-Georgetown Transplant Institute, Washington, DC, United States
| | - Todd N. Eagar
- Immunogenetics and Transplantation Laboratory Houston Methodist, Houston, TX, United States
| | - Howard M. Gebel
- Histocompatibility and Molecular Immunogenetics Laboratory, Emory University, Atlanta, GA, United States
| | - Gayle M. Vranic
- Medstar-Georgetown Transplant Institute, Washington, DC, United States
| | - Kelley M.K. Hitchman
- Department of Pathology and Laboratory Medicine, University of Texas Health Science Center, San Antonio, San Antonio, TX, United States
| | - Julie Houp
- Department of Laboratory Medicine, University of Alabama Medical Center, Birmingham, AL, United Kingdom
| | - Malek Kamoun
- Department of Pathology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, United States
| | - John Killian
- Department of Surgery, University of Alabama Medical Center, Birmingham, AL, United Kingdom
| | - Jim Kim
- Department of Surgery, University of Southern California, Los Angeles, CA, United States
| | - Vineeta Kumar
- Department of Medicine, Division of Nephrology, University of Alabama, Birmingham, AL, United Kingdom
| | - Matthew Levine
- Department of Surgery, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, United States
| | - Brendan P. Lovasik
- Department of Surgery, Emory University School of Medicine, Atlanta, GA, United States
| | - Tyler Lunow-Luke
- Department of Surgery, University of California San Francisco, San Francisco, CA, United States
| | - Ronald F. Parsons
- Department of Surgery, Emory University School of Medicine, Atlanta, GA, United States
| | - Vikram Pattanayak
- Department of Pathology, Massachusetts General Hospital, Boston MA, United States
| | - Daniel Ranch
- Department of Pediatrics, University of Texas Health Science Center at San Antonio, San Antonio, TX, United States
| | - Anushi Shah
- Department of Surgery, Massachusetts General Hospital, Boston, MA, United States
| | - Peter G. Stock
- Department of Surgery, University of California San Francisco, San Francisco, CA, United States
| | - Olga A. Timofeeva
- Department of Pathology, MedStar Georgetown University Hospital, Washington, DC, United States
| | - Jennifer Trofe-Clark
- Department of Surgery, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, United States
| | - Chelsey Wongjirad
- Department of Surgery, University of Southern California, Los Angeles, CA, United States
| | - Heidi Yeh
- Department of Surgery, Massachusetts General Hospital, Boston, MA, United States
| | - Stephanie Yi
- Department of Surgery, Houston Methodist, Houston, TX, United States
| | - Raja Rajalingam
- Immunogenetics and Transplantation Laboratory, Department of Surgery, University of California San Francisco, San Francisco, CA, United States.
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Thongprayoon C, Jadlowiec CC, Mao SA, Mao MA, Leeaphorn N, Kaewput W, Pattharanitima P, Nissaisorakarn P, Cooper M, Cheungpasitporn W. Distinct phenotypes of kidney transplant recipients aged 80 years or older in the USA by machine learning consensus clustering. BMJ Surg Interv Health Technol 2023; 5:e000137. [PMID: 36843871 PMCID: PMC9944353 DOI: 10.1136/bmjsit-2022-000137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 02/05/2023] [Indexed: 02/22/2023] Open
Abstract
Objectives This study aimed to identify distinct clusters of very elderly kidney transplant recipients aged ≥80 and assess clinical outcomes among these unique clusters. Design Cohort study with machine learning (ML) consensus clustering approach. Setting and participants All very elderly (age ≥80 at time of transplant) kidney transplant recipients in the Organ Procurement and Transplantation Network/United Network for Organ Sharing database database from 2010 to 2019. Main outcome measures Distinct clusters of very elderly kidney transplant recipients and their post-transplant outcomes including death-censored graft failure, overall mortality and acute allograft rejection among the assigned clusters. Results Consensus cluster analysis was performed in 419 very elderly kidney transplant and identified three distinct clusters that best represented the clinical characteristics of very elderly kidney transplant recipients. Recipients in cluster 1 received standard Kidney Donor Profile Index (KDPI) non-extended criteria donor (ECD) kidneys from deceased donors. Recipients in cluster 2 received kidneys from older, hypertensive ECD deceased donors with a KDPI score ≥85%. Kidneys for cluster 2 patients had longer cold ischaemia time and the highest use of machine perfusion. Recipients in clusters 1 and 2 were more likely to be on dialysis at the time of transplant (88.3%, 89.4%). Recipients in cluster 3 were more likely to be preemptive (39%) or had a dialysis duration less than 1 year (24%). These recipients received living donor kidney transplants. Cluster 3 had the most favourable post-transplant outcomes. Compared with cluster 3, cluster 1 had comparable survival but higher death-censored graft failure, while cluster 2 had lower patient survival, higher death-censored graft failure and more acute rejection. Conclusions Our study used an unsupervised ML approach to cluster very elderly kidney transplant recipients into three clinically unique clusters with distinct post-transplant outcomes. These findings from an ML clustering approach provide additional understanding towards individualised medicine and opportunities to improve care for very elderly kidney transplant recipients.
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Affiliation(s)
- Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Shennen A Mao
- Division of Transplant Surgery, Mayo Clinic, Jacksonville, Florida, USA
| | - Michael A Mao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, Florida, USA
| | - Napat Leeaphorn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, Florida, USA,Renal Transplant Program, Saint Luke's Health System, Kansas City, Missouri, USA
| | - Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | | | | | - Matthew Cooper
- Division of Transplant, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Thongprayoon C, Vaitla P, Jadlowiec CC, Mao SA, Mao MA, Acharya PC, Leeaphorn N, Kaewput W, Pattharanitima P, Tangpanithandee S, Krisanapan P, Nissaisorakarn P, Cooper M, Cheungpasitporn W. Differences between kidney retransplant recipients as identified by machine learning consensus clustering. Clin Transplant 2023; 37:e14943. [PMID: 36799718 DOI: 10.1111/ctr.14943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 08/13/2022] [Accepted: 02/11/2023] [Indexed: 02/18/2023]
Abstract
BACKGROUND Our study aimed to characterize kidney retransplant recipients using an unsupervised machine-learning approach. METHODS We performed consensus cluster analysis based on the recipient-, donor-, and transplant-related characteristics in 17 443 kidney retransplant recipients in the OPTN/UNOS database from 2010 to 2019. We identified each cluster's key characteristics using the standardized mean difference of >.3. We compared the posttransplant outcomes, including death-censored graft failure and patient death among the assigned clusters RESULTS: Consensus cluster analysis identified three distinct clusters of kidney retransplant recipients. Cluster 1 recipients were predominantly white and were less sensitized. They were most likely to receive a living donor kidney transplant and more likely to be preemptive (30%) or need ≤1 year of dialysis (32%). In contrast, cluster 2 recipients were the most sensitized (median PRA 95%). They were more likely to have been on dialysis >1 year, and receive a nationally allocated, low HLA mismatch, standard KDPI deceased donor kidney. Recipients in cluster 3 were more likely to be minorities (37% Black; 15% Hispanic). They were moderately sensitized with a median PRA of 87% and were also most likely to have been on dialysis >1 year. They received locally allocated high HLA mismatch kidneys from standard KDPI deceased donors. Thymoglobulin was the most commonly used induction agent for all three clusters. Cluster 1 had the most favorable patient and graft survival, while cluster 3 had the worst patient and graft survival. CONCLUSION The use of an unsupervised machine learning approach characterized kidney retransplant recipients into three clinically distinct clusters with differing posttransplant outcomes. Recipients with moderate allosensitization, such as those represented in cluster 3, are perhaps more disadvantaged in the kidney retransplantation process. Potential opportunities for improvement specific to these re-transplant recipients include working to improve opportunities to improve access to living donor kidney transplantation, living donor paired exchange and identifying strategies for better HLA matching.
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Affiliation(s)
- Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Pradeep Vaitla
- Division of Nephrology, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | | | - Shennen A Mao
- Division of Transplant Surgery, Mayo Clinic, Jacksonville, Florida, USA
| | - Michael A Mao
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Jacksonville, Florida, USA
| | - Prakrati C Acharya
- Division of Nephrology, Texas Tech Health Sciences Center El Paso, El Paso, Texas, USA
| | - Napat Leeaphorn
- Renal Transplant Program, University of Missouri-Kansas City School of Medicine/Saint Luke's Health System, Kansas City, Missouri, USA
| | - Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | | | - Supawit Tangpanithandee
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Pajaree Krisanapan
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA.,Department of Internal Medicine, Faculty of Medicine, Thammasat University, Pathum Thani, Thailand
| | - Pitchaphon Nissaisorakarn
- Department of Medicine, Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Matthew Cooper
- Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Wisit Cheungpasitporn
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Muth J, Leedom T, Hamil A, Luukkonen L, Tumala B, Carter A, Magee K, Comune Pennacchi P, Primo D, Kiebish MA, Boocock D, Vadakekolathu J, Petit V, Baughman JE, Bhatnagar N, Cooper M, Rutella S, Berrien-Elliot M, Davidson-Moncada J, Fehniger TA. WU-NK-101, an enhanced memory natural killer (NK) cell therapy, with cetuximab (Ctx) for the treatment of advanced colorectal cancer (CRC). J Clin Oncol 2023. [DOI: 10.1200/jco.2023.41.4_suppl.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
170 Background: CRC is the 4th leading cause of global cancer-related deaths, and novel therapeutic strategies for advanced CRC are urgently needed. Adoptive cell therapy (ACT) is effective in treating hematological malignancies; however, ACT in solid tumors is hindered by target antigen identification, restricted migration into tumors, and survival in the tumor microenvironment (TME) due to immunosuppressive signals and scarcity of nutrients. NK cells are central to anti-tumor immunity and can directly eliminate tumor cells without prior sensitization. Through cytokine reprogramming, NK cells can also gain memory-like features that augment their anti-tumor potential. WU-NK-101 is a cytokine-reprogrammed, expanded, cryopreserved, off-the-shelf NK cell product derived from peripheral blood mononuclear cells, with no additional engineering. Methods: WU-NK-101 ± Ctx was evaluated in vitro in 2D cytotoxicity assays in complete (N) and TME-aligned medias. WU-NK-101 cytotoxicity was further assessed against primary CRC surgical samples in native-TME-aligned 3D assays. Proteomic analysis was performed using tandem-mass spectrometry. In vivo efficacy of WU-NK-101 ± Ctx was evaluated in NSG mice bearing LoVo xenograft CRC tumors. Cell trafficking/penetration to TME was measured by tracking labeled WU-NK-101 ± trastuzumab in NSG mice bearing subcutaneous SKOV-3 xenografts. Results: Compared to conventional NK cells (cNK), WU-NK-101 had a unique phenotype consistent with rapid activation and proliferation (higher expression of activating receptors, Ki67, and GZMB), and showed enhanced in vitro cytotoxicity. WU-NK-101 also exhibited potent cytotoxicity against LoVo CRC tumors in vivo, which was further enhanced in combination with Ctx. Antibody combination improved WU-NK-101 penetration, and persistence in TME. WU-NK-101’s metabolic profile was consistent with aerobic (Warburg) glycolysis, potentially facilitating effector functions in the TME. WU-NK-101 also showed enhanced metabolic fitness and flexibility, as proteins in several metabolic pathways were upregulated in TME vs N media. Consistent with this, WU-NK-101 had increased cell-surface expression of nutrient transporters. While cNK and T cells cytotoxicity was significantly suppressed in TME-aligned media, WU-NK-101’s function was not impacted. Conclusions: We show that WU-NK-101 exerted potent activity against CRC, and in combination with Ctx showed improved intra-tumor infiltration/persistence and anti-tumor activity. Also, WU-NK-101 cells had enhanced metabolic fitness/flexibility and decreased susceptibility to immunosuppression, overcoming limitations encountered by ACT for solid tumors. A Phase 1b clinical trial is in development, which may reshape ACT in CRC and other EGFR-expressing tumors. [Table: see text]
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - David Boocock
- Nottingham Trent University, Nottingham, United Kingdom
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Parsons RF, Tantisattamo E, Cheungpasitporn W, Basu A, Lu Y, Lentine KL, Woodside KJ, Singh N, Scalea J, Alhamad T, Dunn TB, Rivera FHC, Parajuli S, Pavlakis M, Cooper M. Comprehensive review: Frailty in pancreas transplant candidates and recipients. Clin Transplant 2023; 37:e14899. [PMID: 36591953 DOI: 10.1111/ctr.14899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/22/2022] [Accepted: 12/29/2022] [Indexed: 01/03/2023]
Abstract
Well-selected patients with kidney disease and diabetes mellitus who undergo simultaneous kidney-pancreas transplantation often experience dramatic improvements in quality of life and long-term survival compared to those who remain on medical therapy. Over the past several years the importance of frailty in the pancreas transplant candidate and recipient populations has grown. More patients with advanced age have entered the waitlist, and complications from prolonged diabetes, even in younger patients, have created increased evidence of risk for frailty. Given these concerns, and the broad challenges facing pancreas transplantation volumes overall, we generated this review to help establish the impact and implications. We summarize the interplay of immunological factors, aging, environmental factors, diabetes mellitus, and chronic kidney disease that put these patients at risk for frailty. We discuss its measurement and recommend a combination of two instruments (both well-validated and one entirely objective). We describe the outcomes for patients before and after pancreas transplantation who may have frailty, and what interventions can be taken to mitigate its effects. Broader investigation into frailty in the pancreas transplant population is needed to better understand how to select patients for pancreas transplantation and to how manage its consequences thereafter.
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Affiliation(s)
| | | | | | | | - Yee Lu
- University of Michigan, Ann Arbor, Michigan, USA
| | | | | | - Neeraj Singh
- John C. McDonald Regional Transplant Center, Shreveport, Los Angeles, USA
| | - Joseph Scalea
- Medical University of South Carolina, Charleston, South Carolina, USA
| | - Tarek Alhamad
- Washington University School of Medicine, St. Louis, Missouri, USA
| | - Ty B Dunn
- University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | | | - Martha Pavlakis
- Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Matthew Cooper
- Medstar Georgetown Transplant Institute, Washington DC, USA
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Concepcion BP, Harhay M, Ruterbories J, Finn J, Wiseman A, Cooper M, Mohan S, Doshi MD. Current landscape of kidney allocation: Organ procurement organization perspectives. Clin Transplant 2023; 37:e14925. [PMID: 36715287 DOI: 10.1111/ctr.14925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Revised: 01/21/2023] [Accepted: 01/26/2023] [Indexed: 01/31/2023]
Abstract
Organ procurement organizations (OPOs) play a central role in the recovery, preservation, and distribution of deceased donor kidneys for transplantation in the United States. We conducted a national survey to gather information on OPO practices and perceived barriers to efficient organ placement in the face of the new circle-based allocation and asked for suggestions to overcome them. Of the 57 OPOs, 44 responded (77%). The majority of OPOs (61%) reported barriers to obtaining a kidney biopsy, including lack of an available pathologist. Most OPOs (55%) indicated barriers to pumping owing to a lack of available staff and transportation. Respondents agreed or strongly agreed that the new allocation system has worsened transportation challenges (85%), increased provisional acceptances of kidneys (66%), increased communication challenges with transplant centers (68%), and worsened the efficiency of organ allocation (83%). OPO-suggested solutions include making transplant centers more accountable for inefficient selection practices, developing reliable transportation options, and removing the requirement for national sharing. These findings underscore the need to examine closely the trade-offs of the new allocation system with respect to costs, organ ischemia, and discard. These findings may help inform practice and policy for overcoming transportation barriers and improving the efficiency of organ placement.
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Affiliation(s)
- Beatrice P Concepcion
- Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Meera Harhay
- Department of Medicine, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.,Department of Epidemiology and Biostatistics, Drexel University Dornsife School of Public Health, Philadelphia, Pennsylvania, USA.,Penn Transplant Institute, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
| | | | - Jan Finn
- Midwest Transplant Network, Westwood, Kansas, USA
| | | | | | - Sumit Mohan
- Department of Medicine, Division of Nephrology, Columbia University College of Physicians & Surgeons, New York, New York, USA.,The Columbia University Renal Epidemiology (CURE) Group, New York, New York, USA.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
| | - Mona D Doshi
- Department of Medicine, Division of Nephrology, University of Michigan, Ann Arbor, Michigan, USA
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Lindner BK, Lakhani SA, Cooper M, Nguyen BM, Vranic G, Yi SY, Abrams P. Evaluation of a multidisciplinary, multimodal pain management protocol following pancreas transplantation. Clin Transplant 2023; 37:e14856. [PMID: 36398867 DOI: 10.1111/ctr.14856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/31/2022] [Accepted: 11/07/2022] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Patients undergoing solid-organ transplantation demonstrate pain arising from both the surgical intervention and pre-existing comorbidities. High levels of opioid use both pre- and post-transplant are associated with unfavorable transplant outcomes. Patient education, multimodal therapy, and discharge planning have all been demonstrated to reduce opioid use after transplant. METHODS This is a single-center, retrospective study analyzing patients before and after implementation of a multimodal, multidisciplinary pain management protocol. Morphine milligram equivalents (MMEs) use during the index transplant hospitalization and the need for opioids at discharge was compared between the pre- and post-protocol groups. RESULTS A total of 52 patients were included in the study, 31 in the pre and 21 in the post-protocol groups. Inpatient MME use was reduced from 135.5 to 67.5 MMEs after protocol implementation. Additionally, the number of patients discharged on opioids following transplant decreased from 90.3% to 47.6%. Pain scores, length of stay (LOS), and return of bowel function was not different between groups. CONCLUSION The implementation of a multimodal, multidisciplinary pain management protocol significantly decreased opioid use during the post-surgical hospitalization and in the 6 months following transplantation. A combination of non-opioid analgesics, patient education, and discharge planning can be beneficial elements in pancreas transplant pain management.
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Affiliation(s)
- Brian K Lindner
- MedStar Georgetown University Hospital, Department of Pharmacy, Washington DC, USA
| | - Shahzia A Lakhani
- MedStar Georgetown University Hospital, MedStar Georgetown Transplant Institute, Washington DC, USA
| | - Matthew Cooper
- MedStar Georgetown University Hospital, MedStar Georgetown Transplant Institute, Washington DC, USA
| | - Brian M Nguyen
- MedStar Georgetown University Hospital, MedStar Georgetown Transplant Institute, Washington DC, USA
| | - Gayle Vranic
- MedStar Georgetown University Hospital, MedStar Georgetown Transplant Institute, Washington DC, USA
| | - Soo Y Yi
- MedStar Georgetown University Hospital, MedStar Georgetown Transplant Institute, Washington DC, USA
| | - Peter Abrams
- MedStar Georgetown University Hospital, MedStar Georgetown Transplant Institute, Washington DC, USA
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Laird PJ, Walker R, McCallum G, Toombs M, Barwick M, Morris P, Aitken R, Cooper M, Norman R, Patel B, Lau G, Chang AB, Schultz A. Change in health outcomes for First Nations children with chronic wet cough: rationale and study protocol for a multi-centre implementation science study. BMC Pulm Med 2022; 22:492. [PMID: 36581812 PMCID: PMC9798941 DOI: 10.1186/s12890-022-02219-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 11/02/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND In children, chronic wet cough may be a sign of underlying lung disease, including protracted bacterial bronchitis (PBB) and bronchiectasis. Chronic (> 4 weeks in duration) wet cough (without indicators pointing to alternative causes) that responds to antibiotic treatment is diagnostic of PBB. Timely recognition and management of PBB can prevent disease progression to irreversible bronchiectasis with lifelong consequences. However, detection and management require timely health-seeking by carers and effective management by clinicians. We aim to improve (a) carer health-seeking for chronic wet cough in their child and (b) management of chronic wet cough in children by clinicians. We hypothesise that implementing a culturally integrated program, which is informed by barriers and facilitators identified by carers and health practitioners, will result in improved lung health of First Nations children, and in the future, a reduced the burden of bronchiectasis through the prevention of the progression of protracted bacterial bronchitis to bronchiectasis. METHODS This study is a multi-centre, pseudorandomised, stepped wedge design. The intervention is the implementation of a program. The program has two components: a knowledge dissemination component and an implementation component. The implementation is adapted to each study site using a combined Aboriginal Participatory Action Research and an Implementation Science approach, guided by the Consolidated Framework of Implementation Research. There are three categories of outcome measures related to (i) health (ii) cost, and (iii) implementation. We will measure health-seeking as the proportion of parents seeking help for their child in a 6-month period before the intervention and the same 6-month period (i.e., the same six calendar months) thereafter. The parent-proxy, Cough-specific Quality of Life (PC-QoL) will be the primary health-related outcome measure. DISCUSSION We hypothesise that a tailored intervention at each site will result in improved health-seeking for carers of children with a chronic wet cough and improved clinician management of chronic wet cough. In addition, we expect this will result in improved lung health outcomes for children with a chronic wet cough. TRIAL REGISTRATION Australian New Zealand Clinical Trials Registry; ACTRN12622000430730 , registered 16 March 2022, Retrospectively registered.
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Affiliation(s)
- Pamela J. Laird
- grid.414659.b0000 0000 8828 1230Wal-yan Respiratory Research Centre, Telethon Kids Institute, Perth, WA Australia ,grid.410667.20000 0004 0625 8600Perth Children’s Hospital, Perth, WA Australia ,grid.1012.20000 0004 1936 7910Division of Paediatrics, Faculty of Medicine, University of Western Australia, Perth, Australia
| | - Roz Walker
- grid.1012.20000 0004 1936 7910School of Indigenous Studies, Poche Centre for Indigenous Health, University of Western Australia, Perth, WA Australia ,grid.1012.20000 0004 1936 7910School of Population Health, University of Western Australia, Perth, WA Australia ,grid.1025.60000 0004 0436 6763Ngangk Yira Institute for Change, Murdoch University, Perth Western, Australia
| | - Gabrielle McCallum
- grid.1043.60000 0001 2157 559XChild Health Division Menzies School of Health Research, Charles Darwin University, NT Darwin, Australia
| | - Maree Toombs
- grid.1003.20000 0000 9320 7537Faculty of Medicine, University of Queensland, Brisbane, QLD Australia
| | - Melanie Barwick
- grid.42327.300000 0004 0473 9646Hospital for Sick Children, Toronto, Canada ,grid.17063.330000 0001 2157 2938Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Peter Morris
- grid.1043.60000 0001 2157 559XChild Health Division Menzies School of Health Research, Charles Darwin University, NT Darwin, Australia
| | - Robyn Aitken
- grid.1043.60000 0001 2157 559XChild Health Division Menzies School of Health Research, Charles Darwin University, NT Darwin, Australia ,grid.1014.40000 0004 0367 2697College of Medicine and Public Health, Flinders University, Adelaide, SA Australia ,grid.1043.60000 0001 2157 559XCharles Darwin University College of Indigenous Future, Arts & Society, Darwin, NT Australia
| | - Matthew Cooper
- grid.414659.b0000 0000 8828 1230Wal-yan Respiratory Research Centre, Telethon Kids Institute, Perth, WA Australia
| | - Richard Norman
- grid.1032.00000 0004 0375 4078School of Population Health, Curtin University, Perth, WA Australia
| | - Bhavini Patel
- Northern Territory Department of Health, Darwin, NT Australia
| | - Gloria Lau
- grid.414659.b0000 0000 8828 1230Wal-yan Respiratory Research Centre, Telethon Kids Institute, Perth, WA Australia ,grid.410667.20000 0004 0625 8600Perth Children’s Hospital, Perth, WA Australia
| | - Anne B. Chang
- grid.1043.60000 0001 2157 559XChild Health Division Menzies School of Health Research, Charles Darwin University, NT Darwin, Australia ,grid.240562.7Department of Respiratory Medicine, Queensland Children’s Hospital, Brisbane, QLD Australia ,grid.1003.20000 0000 9320 7537Australian Centre For Health Services Innovation, Qld University of Technology, Brisbane, QLD Australia
| | - André Schultz
- grid.414659.b0000 0000 8828 1230Wal-yan Respiratory Research Centre, Telethon Kids Institute, Perth, WA Australia ,grid.410667.20000 0004 0625 8600Perth Children’s Hospital, Perth, WA Australia ,grid.1012.20000 0004 1936 7910Division of Paediatrics, Faculty of Medicine, University of Western Australia, Perth, Australia
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