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Alderete IS, Pontula A, Medina CK, Halpern SE, Klapper JA, Neely ML, Snyder L, Hartwig MG. Predictors of donation after circulatory death lung utilization and allograft survival. J Heart Lung Transplant 2025; 44:573-582. [PMID: 39571639 DOI: 10.1016/j.healun.2024.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 10/15/2024] [Accepted: 11/12/2024] [Indexed: 12/07/2024] Open
Abstract
BACKGROUND Understanding donor factors associated with successful lung transplantation (LTx) following donation after circulatory death (DCD) is important in optimizing donor management. In this study, we examined critical care and ventilatory factors associated with DCD LTx and allograft survival using a unique detailed donor management database. METHODS The Donor Management Goals national registry was queried for DCD donors between January 2016 and July 2023. The primary outcomes were DCD lung utilization and allograft survival. Multivariable modeling was used to assess factors associated with DCD LTx and allograft survival. RESULTS A total of 3,394 donors met inclusion criteria and were included. Transplantation occurred in 202 (6.0%) cases with 85.6% 1-year survival. DCD LTx was more likely to occur following cerebrovascular accidents compared to anoxia and from donors who achieved a targeted PaO2/FiO2 (P/F) ratio at the time of organ allocation. Donor factors associated with decreased likelihood of LTx included increasing age, increasing INR, height greater than 168 cm, increasing hematocrit, and higher positive end-expiratory pressure (PEEP) at the time of organ allocation. Donor treatment with steroids and controlled mandatory ventilation, were associated with increased likelihood of graft failure at one year. CONCLUSIONS Successful DCD LTx associates with potentially modifiable donor parameters, including targeted P/F ratio, PEEP, INR, and hematocrit. Additionally, careful consideration of steroid use and ventilator settings may be important for improving long-term graft function. These modifiable factors may inform strategies to increase DCD LTx and improve survival.
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Affiliation(s)
| | - Arya Pontula
- University of Manchester Medical School, Manchester, UK
| | | | - Samantha E Halpern
- Department of Surgery, Massachusetts General Hospital, Boston, Massachusetts
| | - Jacob A Klapper
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
| | - Megan L Neely
- Duke Clinical Research Institute, Durham, North Carolina
| | - Laurie Snyder
- Duke Clinical Research Institute, Durham, North Carolina; Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Matthew G Hartwig
- Division of Cardiovascular and Thoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina; Duke Clinical Research Institute, Durham, North Carolina
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Fan L, Xia H, Peng G, Wang W, Fu Z, Ye Q. A Novel Machine Perfusion System for Enhancing Hepatic Microcirculation Perfusion. Artif Organs 2025; 49:582-591. [PMID: 39740084 DOI: 10.1111/aor.14930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2024] [Revised: 11/19/2024] [Accepted: 12/09/2024] [Indexed: 01/02/2025]
Abstract
BACKGROUND Machine perfusion is a promising strategy for safeguarding liver transplants donated after cardiac death (DCD). In this study, we developed and validated a novel machine perfusion approach for mitigating risk factors and salvaging severe DCD livers. METHODS A novel hypothermic oxygenated perfusion (HOPE) system was developed, incorporating two pumps and an elastic water sac to emulate the functionality of the cardiac cycle. Compared to conventional systems (HOPE S1 and S2), the novel HOPE system (HOPE S3) was evaluated in rats, utilizing healthy livers perfused with methylene blue diluted using Histidine-tryptophan-ketoglutarate (HTK) solution or DCD livers subjected to 60 min of warm ischemia without heparin administration. Liver perfusion outcomes were assessed through macroscopic and microscopic evaluations, molecular analyses, and orthotopic liver transplantation (OLT). RESULTS DCD livers subjected to HOPE systems' perfusion exhibited decreased injury and enhanced survival rates compared to static cold storage following 60 min of warm ischemia (DCD + SCS). The 4-week post-transplantation survival rates were 0%, 20%, and 33% in the DCD + SCS, HOPE S1, and HOPE S2 groups, respectively. HOPE S3 conferred protection against hepatocyte and non-parenchymal cell injury, resulting in a 67% animal survival rate following 60 min of warm donor ischemia (HOPE S3). Assessments of hepatic sinusoidal microcirculation, morphological changes, and molecular alterations in preserved livers further confirmed these findings. CONCLUSIONS The newly devised machine perfusion system can enhance and uniform liver perfusion and may become a promising tool for revitalizing DCD liver grafts afflicted with severe warm ischemic injuries.
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Affiliation(s)
- Lin Fan
- Hubei Provincial Clinical Research Center for Natural Polymer Biological Liver, Hubei Key Laboratory of Medical Technology on Transplantation, National Quality Control Center for Donated Organ Procurement, Transplant Center of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Haoyang Xia
- Hubei Provincial Clinical Research Center for Natural Polymer Biological Liver, Hubei Key Laboratory of Medical Technology on Transplantation, National Quality Control Center for Donated Organ Procurement, Transplant Center of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Guizhu Peng
- Hubei Provincial Clinical Research Center for Natural Polymer Biological Liver, Hubei Key Laboratory of Medical Technology on Transplantation, National Quality Control Center for Donated Organ Procurement, Transplant Center of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Weiyu Wang
- Hubei Provincial Clinical Research Center for Natural Polymer Biological Liver, Hubei Key Laboratory of Medical Technology on Transplantation, National Quality Control Center for Donated Organ Procurement, Transplant Center of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Zhen Fu
- Hubei Provincial Clinical Research Center for Natural Polymer Biological Liver, Hubei Key Laboratory of Medical Technology on Transplantation, National Quality Control Center for Donated Organ Procurement, Transplant Center of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Qifa Ye
- Hubei Provincial Clinical Research Center for Natural Polymer Biological Liver, Hubei Key Laboratory of Medical Technology on Transplantation, National Quality Control Center for Donated Organ Procurement, Transplant Center of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- National Health Commission Key Laboratory of Translational Research on Transplantation Medicine, The 3rd Xiangya Hospital of Central South University, Changsha, Hunan, China
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Zhang P, Liang H, Wang Y. Advances and Challenges of Thrombolytic Therapy for Donation After Circulatory Death Organs. Clin Transplant 2025; 39:e70099. [PMID: 39921605 DOI: 10.1111/ctr.70099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2024] [Revised: 01/15/2025] [Accepted: 01/23/2025] [Indexed: 02/10/2025]
Abstract
The demand for organ transplantation has exceeded the global supply of available organs. Donation after circulatory death (DCD) is considered an effective method to solve the disparity between the supply and demand of organs, by expanding the donor pool. However, DCD organs experience long-term damage caused by warm ischemia (WI) and microthrombosis caused by diffuse intravascular coagulation. Unfortunately, because of concerns about post-transplantation complications, most organs considered high-risk are discarded, resulting in wasted medical resources and economic losses. However, thrombolytic therapy before transplantation may dissolve microthrombosis in DCD organs, improve organ microcirculation, and increase organ use. Herein, we review the current status and potential value of thrombolytic therapy before DCD organ transplantation, summarize the progress of thrombolytic therapy for DCD organ transplantation according to preclinical and clinical research, and emphasize the heterogeneity and limitations of studies that have caused some controversies associated with this therapy. Overall, the role of thrombolytic therapy should not be overlooked. We anticipate that thrombolytic therapy combined with machine perfusion will provide an opportunity to improve inferior-quality DCD grafts, resulting in their becoming more widely available and safer for transplantation, thus solving the urgent problem of organ shortage.
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Affiliation(s)
- Peng Zhang
- Department of General Surgery, Division of Hepatobiliary and Pancreas Surgery, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, P.R. China
| | - Han Liang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
| | - Yanfeng Wang
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Wuhan, Hubei, P.R. China
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4
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Watson CJ, MacDonald S, Bridgeman C, Brais R, Upponi SS, Foukaneli T, Swift L, Fear C, Selves L, Kosmoliaptsis V, Allison M, Hogg R, Parsy KS, Thomas W, Gaurav R, Butler AJ. D-dimer Release From Livers During Ex Situ Normothermic Perfusion and After In Situ Normothermic Regional Perfusion: Evidence for Occult Fibrin Burden Associated With Adverse Transplant Outcomes and Cholangiopathy. Transplantation 2023; 107:1311-1321. [PMID: 36728501 PMCID: PMC10205116 DOI: 10.1097/tp.0000000000004475] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/10/2022] [Accepted: 10/29/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Deceased donor livers are prone to biliary complications, which may necessitate retransplantation, and we, and others, have suggested that these complications are because of peribiliary vascular fibrin microthrombi. We sought to determine the prevalence and consequence of occult fibrin within deceased donor livers undergoing normothermic ex situ perfusion (NESLiP) and evaluate a role for fibrinolysis. METHODS D-dimer concentrations, products of fibrin degradation, were assayed in the perfusate of 163 livers taken after 2 h of NESLiP, including 91 that were transplanted. These were related to posttransplant outcomes. Five different fibrinolytic protocols during NESLiP using alteplase were evaluated, and the transplant outcomes of these alteplase-treated livers were reviewed. RESULTS Perfusate D-dimer concentrations were lowest in livers recovered using in situ normothermic regional perfusion and highest in alteplase-treated livers. D-dimer release from donation after brain death livers was significantly correlated with the duration of cold ischemia. In non-alteplase-treated livers, Cox proportional hazards regression analysis showed that D-dimer levels were associated with transplant survival ( P = 0.005). Treatment with alteplase and fresh frozen plasma during NESLiP was associated with significantly more D-dimer release into the perfusate and was not associated with excess bleeding postimplantation; 8 of the 9 treated livers were free of cholangiopathy, whereas the ninth had a proximal duct stricture. CONCLUSIONS Fibrin is present in many livers during cold storage and is associated with poor posttransplant outcomes. The amount of D-dimer released after fibrinolytic treatment indicates a significant occult fibrin burden and suggests that fibrinolytic therapy during NESLiP may be a promising therapeutic intervention.
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Affiliation(s)
- Christopher J.E. Watson
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- National Institute for Health and Care Research Blood and Transplant Research Unit in Organ Donation and Transplantation, at the University of Cambridge in collaboration with Newcastle University in partnership with National Health Service Blood and Transplant (NHSBT), Cambridge, United Kingdom
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Stephen MacDonald
- Specialist Haemostasis Laboratory, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Christopher Bridgeman
- Specialist Haemostasis Laboratory, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Rebecca Brais
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- Department of Histopathology, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Sara S. Upponi
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- Department of Radiology, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Theodora Foukaneli
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- Department of Haematology, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Lisa Swift
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Corrina Fear
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Linda Selves
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Vasilis Kosmoliaptsis
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- National Institute for Health and Care Research Blood and Transplant Research Unit in Organ Donation and Transplantation, at the University of Cambridge in collaboration with Newcastle University in partnership with National Health Service Blood and Transplant (NHSBT), Cambridge, United Kingdom
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Michael Allison
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
- Department of Medicine, Cambridge University Hospitals NHS Trust, Cambridge, United Kingdom
| | - Rachel Hogg
- Statistics and Clinical Research, NHS Blood and Transplant, Bristol, United Kingdom
| | - Kourosh Saeb Parsy
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- National Institute for Health and Care Research Blood and Transplant Research Unit in Organ Donation and Transplantation, at the University of Cambridge in collaboration with Newcastle University in partnership with National Health Service Blood and Transplant (NHSBT), Cambridge, United Kingdom
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Will Thomas
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- Specialist Haemostasis Laboratory, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Rohit Gaurav
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- National Institute for Health and Care Research Blood and Transplant Research Unit in Organ Donation and Transplantation, at the University of Cambridge in collaboration with Newcastle University in partnership with National Health Service Blood and Transplant (NHSBT), Cambridge, United Kingdom
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
| | - Andrew J. Butler
- Department of Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
- National Institute for Health and Care Research Cambridge Biomedical Research Centre, Cambridge, United kingdom
- National Institute for Health and Care Research Blood and Transplant Research Unit in Organ Donation and Transplantation, at the University of Cambridge in collaboration with Newcastle University in partnership with National Health Service Blood and Transplant (NHSBT), Cambridge, United Kingdom
- Roy Calne Transplant Unit, Cambridge University Hospitals National Health Service Trust, Cambridge, United Kingdom
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Fatela-Cantillo D, Gómez-Bravo MÁ, Noval-Padillo JÁ, Álamo-Martínez JM, Bernal-Bellido C, Marín-Gómez LM. Impact of Point-of-Care Assays for Hemostasis Monitoring According to Type of Donor in a Cohort of Liver Transplant Recipients. Transplant Proc 2022. [DOI: 10.1016/j.transproceed.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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6
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Justo I, Marcacuzco A, García-Conde M, Caso O, Cobo C, Nutu A, Manrique A, Calvo J, García-Sesma A, Rivas C, Loinaz C, Jiménez-Romero C. Liver Transplantation in Sexagenarian Patients Using Grafts From Uncontrolled Circulatory Death Versus Grafts From Brain Death Donation. Transplant Proc 2022; 54:1839-1846. [PMID: 35909015 DOI: 10.1016/j.transproceed.2022.05.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 05/09/2022] [Accepted: 05/11/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND An increased number of older recipients underwent liver transplantation in recent years, and consequently needing to obtain more liver grafts. In order to increase this pool, in 2006, we initiated the use of livers from uncontrolled circulatory death (uDCD). We analyzed the use of uDCD livers in sexagenarian recipients and their effect on overall survival. METHODS A retrospective and comparative study was performed among 4 groups according to recipient age (less or greater than 60 years) and donor type (donor brain death [DBD] or uDCD): Group A: DBD livers in recipients aged <60 years (n = 169); Group B: uDCD livers in recipients aged <60 years (n = 36); Group C: DBD livers in recipients aged >60 years (n = 96); and Group D: uDCD livers in recipients aged >60 years(n = 39). RESULTS Intraoperative transfusion, biliary complications, primary non-function, acute rejection, chronic renal dysfunction, retransplantation, and mortality during follow-up (cardiovascular diseases in 3 patients, hepatitis C virus recurrence in 4 patients, and de novo malignancies in 3 patients) were significantly higher, and 5-year patient and graft survival was significantly lower in sexagenarian recipients. Bilirubin and packed red blood cells transfusion were risk factors for patient survival, whereas hepatocelular carcinoma, creatinine, and packed red blood cells transfusion were risk factors for patient survival. Recipient age (<60 years) was confirmed as protective factor for patient and graft survival, whereas the use of uDCD was not a risk factor for patient or graft survival. CONCLUSIONS Use of a uDCD liver did not demonstrate as a risk factor for patient and graft survival, and recipient age (<60 years) was a protective factor for patient and graft survival.
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Affiliation(s)
- Iago Justo
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain.
| | - Alberto Marcacuzco
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - María García-Conde
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Oscar Caso
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Cristina Cobo
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Anisa Nutu
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Alejandro Manrique
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Jorge Calvo
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Alvaro García-Sesma
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Cristina Rivas
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Carmelo Loinaz
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
| | - Carlos Jiménez-Romero
- Unit of HPB Surgery and Abdominal Organ Transplantation, "Doce de Octubre" University Hospital, Instituto de Investigación (imas12), Department of Surgery, Faculty of Medicine, Complutense University, Madrid, Spain
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Crannell WC, Sally M, McConnell K, Connelly C, Maynard E, Dewey E, Abt P, Enestvedt CK. Thromboelastography profiles for controlled circulatory death donors: Validating the role of heparin. Clin Transplant 2021; 36:e14518. [PMID: 34668240 DOI: 10.1111/ctr.14518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 11/29/2022]
Abstract
Controlled donation after circulatory death (cDCD) liver transplants are associated with increased ischemic-type biliary complications. Microvascular thrombosis secondary to decreased donor fibrinolysis may contribute to bile duct injury. We hypothesized that cDCD donors are hypercoagulable with impaired fibrinolysis and aim to use thromboelastography to characterize cDCD coagulation profiles.
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Affiliation(s)
- W Christian Crannell
- Department of Surgery, Division of Abdominal Organ Transplantation, Oregon Health & Science University, Portland, Oregon, USA
| | - Mitch Sally
- Department of Surgery, Division of Trauma, Critical Care, and Acute Care Surgery, Oregon Health & Science University, Portland, Oregon, USA
| | - Keeley McConnell
- Department of Surgery, Division of Trauma, Critical Care, and Acute Care Surgery, Oregon Health & Science University, Portland, Oregon, USA
| | - Chris Connelly
- Department of Surgery, Division of Abdominal Organ Transplantation, Oregon Health & Science University, Portland, Oregon, USA
| | - Erin Maynard
- Department of Surgery, Division of Abdominal Organ Transplantation, Oregon Health & Science University, Portland, Oregon, USA
| | - Elizabeth Dewey
- Department of Surgery, Division of Abdominal Organ Transplantation, Oregon Health & Science University, Portland, Oregon, USA
| | - Peter Abt
- Department of Surgery, Division of Transplantation, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - C Kristian Enestvedt
- Department of Surgery, Division of Abdominal Organ Transplantation, Oregon Health & Science University, Portland, Oregon, USA
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Regulations and Procurement Surgery in DCD Liver Transplantation: Expert Consensus Guidance From the International Liver Transplantation Society. Transplantation 2021; 105:945-951. [PMID: 33675315 DOI: 10.1097/tp.0000000000003729] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Donation after circulatory death (DCD) donors are an increasingly more common source of livers for transplantation in many parts of the world. Events that occur during DCD liver recovery have a significant impact on the success of subsequent transplantation. This working group of the International Liver Transplantation Society evaluated current evidence as well as combined experience and created this guidance on DCD liver procurement. Best practices for the recovery and transplantation of livers arising through DCD after euthanasia and organ procurement with super-rapid cold preservation and recovery as well as postmortem normothermic regional perfusion are described, as are the use of adjuncts during DCD liver procurement.
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9
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Hessheimer AJ, Gastaca M, Miñambres E, Colmenero J, Fondevila C. Donation after circulatory death liver transplantation: consensus statements from the Spanish Liver Transplantation Society. Transpl Int 2020; 33:902-916. [PMID: 32311806 PMCID: PMC7496958 DOI: 10.1111/tri.13619] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 02/06/2020] [Accepted: 04/14/2020] [Indexed: 02/06/2023]
Abstract
Livers from donation after circulatory death (DCD) donors are an increasingly more common source of organs for transplantation. While there are few high-level studies in the field of DCD liver transplantation, clinical practice has undergone progressive changes during the past decade, in particular due to mounting use of postmortem normothermic regional perfusion (NRP). In Spain, uncontrolled DCD has been performed since the late 1980s/early 1990s, while controlled DCD was implemented nationally in 2012. Since 2012, the rise in DCD liver transplant activity in Spain has been considerable, and the great majority of DCD livers transplanted in Spain today are recovered with NRP. A panel of the Spanish Liver Transplantation Society was convened in 2018 to evaluate current evidence and accumulated experience in DCD liver transplantation, in particular addressing issues related to DCD liver evaluation, acceptance criteria, and recovery as well as recipient selection and postoperative management. This panel has created a series of consensus statements for the standard of practice in Spain and has published these statements with the hope they might help guide other groups interested in implementing new forms of DCD liver transplantation and/or introducing NRP into their clinical practices.
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Affiliation(s)
- Amelia J. Hessheimer
- Liver Transplant UnitCIBERehdIDIBAPSHospital ClínicUniversity of BarcelonaBarcelonaSpain
| | - Mikel Gastaca
- Hospital Universitario CrucesBilbaoSpain
- SETH Board of DirectorsSpain
| | - Eduardo Miñambres
- Transplant Coordination Unit & Intensive Care ServiceIDIVALHospital Universitario Marqués de ValdecillaUniversity of CantabriaSantanderSpain
| | - Jordi Colmenero
- Liver Transplant UnitCIBERehdIDIBAPSHospital ClínicUniversity of BarcelonaBarcelonaSpain
- SETH Board of DirectorsSpain
| | - Constantino Fondevila
- Liver Transplant UnitCIBERehdIDIBAPSHospital ClínicUniversity of BarcelonaBarcelonaSpain
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Liver Transplantation Using Uncontrolled Donors After Circulatory Death: A 10-year Single-center Experience. Transplantation 2020; 103:2497-2505. [PMID: 31765364 DOI: 10.1097/tp.0000000000002780] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND One method for increasing the donor pool for orthotopic liver transplantations (OLTs) is to use uncontrolled donation after circulation death (uDCDs). METHODS From January 2006 to December 2016, we performed 75 OLTs using uDCD livers. The control group comprised a sample of 265 OLTs using livers of donations after brain death (DBDs). A comparative study was performed. RESULTS Of 256 potential uDCD donors cannulated, 75 (29.3%) livers were accepted for OLT. The amount of hemoderivatives transfused was significantly higher in the uDCD group. The rate of primary nonfunction was also significantly higher (P = 0.031) in uDCD recipients (8%) than DBD recipients (1.5%). The overall rate of biliary complications was significantly higher (P = 0.001) in uDCD recipients (23 cases, 30.6%) than DBD recipients (28 cases, 10.6%). In the uDCD group, 1-, 3-, and 5-year patient survival rates were 82.7%, 73%, and 71.5%, respectively; in the DBD group, they were 89%, 83.7%, and 78.8%, respectively (P = 0.180). In the uDCD group, 1-, 3-, and 5-year graft survival rates were 73.3%, 65.1%, and 63.6%, respectively; in the DBD group, they were 87.1%, 81.9%, and 76.5%, respectively (P = 0.013). Multivariate analysis showed that independent risk factors for patient and graft survival were intraoperative transfusion of >6 units of packed red blood cell concentrates and recipients who were older than 60 years. CONCLUSIONS Although graft survival is significantly lower using uDCD livers, 5-year patient survival in recipients of DBD and uDCD livers is similar. After careful selection, the livers of uDCD can be selectively used for OLT.
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Oldani G, Peloso A, Slits F, Gex Q, Delaune V, Orci LA, van de Looij Y, Colin DJ, Germain S, de Vito C, Rubbia-Brandt L, Lacotte S, Toso C. The impact of short-term machine perfusion on the risk of cancer recurrence after rat liver transplantation with donors after circulatory death. PLoS One 2019; 14:e0224890. [PMID: 31765399 PMCID: PMC6876876 DOI: 10.1371/journal.pone.0224890] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 10/23/2019] [Indexed: 12/27/2022] Open
Abstract
Hypothermic and normothermic ex vivo liver perfusions promote organ recovery after donation after circulatory death (DCD). We tested whether these perfusions can reduce the risk of hepatocellular carcinoma (HCC) recurrence in a 1h-DCD syngeneic transplantation model, using Fischer F344 rats. DCD grafts were machine perfused for 2h with hypothermic perfusion (HOPE) or normothermic perfusion (NORMO), and transplanted. After reperfusion, we injected HCC cells into the vena porta. On day 28 after transplantation, we assessed tumour volumes by MRI. Control rats included transplantations with Fresh and non-perfused DCD livers. We observed apoptotic-necrotic hepatocyte foci in all DCD grafts, which were more visible than in the Fresh liver grafts. Normothermic perfusion allowed a faster post-transplant recovery, with lower day 1 levels of transaminases compared with the other DCD. Overall, survival was similar in all four groups and all animals developed HCCs. Total tumor volume was lower in the Fresh liver recipients compared to the DCD and DCD+HOPE recipients. Volumes in DCD+NORMO recipients were not significantly different from those in the Fresh group. This experiment confirms that ischemia/reperfusion injury promotes HCC cell engraftment/growth after DCD liver transplantation. Using the present extreme 1h ischemia model, both hypothermic and normothermic perfusions were not effective in reducing this risk.
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Affiliation(s)
- Graziano Oldani
- Division of Abdominal Surgery, Department of Surgery, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Hepato-Pancreato-Biliary Centre, Geneva University Hospitals, Geneva, Switzerland
- * E-mail:
| | - Andrea Peloso
- Division of Abdominal Surgery, Department of Surgery, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Hepato-Pancreato-Biliary Centre, Geneva University Hospitals, Geneva, Switzerland
| | - Florence Slits
- Division of Abdominal Surgery, Department of Surgery, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Quentin Gex
- Division of Abdominal Surgery, Department of Surgery, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Vaihere Delaune
- Division of Abdominal Surgery, Department of Surgery, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Hepato-Pancreato-Biliary Centre, Geneva University Hospitals, Geneva, Switzerland
| | - Lorenzo A. Orci
- Division of Abdominal Surgery, Department of Surgery, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Hepato-Pancreato-Biliary Centre, Geneva University Hospitals, Geneva, Switzerland
| | - Yohan van de Looij
- Division of Child Development & Growth, University Children's Hospital Geneva, Geneva, Switzerland
- Institute of Translational Molecular Imaging, University of Geneva, Geneva, Switzerland
| | - Didier J. Colin
- MicroPET/SPECT/CT Imaging Laboratory, Centre for BioMedical Imaging, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
| | - Stéphane Germain
- MicroPET/SPECT/CT Imaging Laboratory, Centre for BioMedical Imaging, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
| | - Claudio de Vito
- Hepato-Pancreato-Biliary Centre, Geneva University Hospitals, Geneva, Switzerland
- Division of Clinical Pathology, Department of Pathology and Immunology, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
| | - Laura Rubbia-Brandt
- Hepato-Pancreato-Biliary Centre, Geneva University Hospitals, Geneva, Switzerland
- Division of Clinical Pathology, Department of Pathology and Immunology, Geneva University Hospitals and University of Geneva, Geneva, Switzerland
| | - Stéphanie Lacotte
- Division of Abdominal Surgery, Department of Surgery, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Christian Toso
- Division of Abdominal Surgery, Department of Surgery, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Hepato-Pancreato-Biliary Centre, Geneva University Hospitals, Geneva, Switzerland
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12
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Watson CJE, Hunt F, Messer S, Currie I, Large S, Sutherland A, Crick K, Wigmore SJ, Fear C, Cornateanu S, Randle LV, Terrace JD, Upponi S, Taylor R, Allen E, Butler AJ, Oniscu GC. In situ normothermic perfusion of livers in controlled circulatory death donation may prevent ischemic cholangiopathy and improve graft survival. Am J Transplant 2019; 19:1745-1758. [PMID: 30589499 DOI: 10.1111/ajt.15241] [Citation(s) in RCA: 195] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 11/09/2018] [Accepted: 12/16/2018] [Indexed: 01/25/2023]
Abstract
Livers from controlled donation after circulatory death (DCD) donors suffer a higher incidence of nonfunction, poor function, and ischemic cholangiopathy. In situ normothermic regional perfusion (NRP) restores a blood supply to the abdominal organs after death using an extracorporeal circulation for a limited period before organ recovery. We undertook a retrospective analysis to evaluate whether NRP was associated with improved outcomes of livers from DCD donors. NRP was performed on 70 DCD donors from whom 43 livers were transplanted. These were compared with 187 non-NRP DCD donor livers transplanted at the same two UK centers in the same period. The use of NRP was associated with a reduction in early allograft dysfunction (12% for NRP vs. 32% for non-NRP livers, P = .0076), 30-day graft loss (2% NRP livers vs. 12% non-NRP livers, P = .0559), freedom from ischemic cholangiopathy (0% vs. 27% for non-NRP livers, P < .0001), and fewer anastomotic strictures (7% vs. 27% non-NRP, P = .0041). After adjusting for other factors in a multivariable analysis, NRP remained significantly associated with freedom from ischemic cholangiopathy (P < .0001). These data suggest that NRP during organ recovery from DCD donors leads to superior liver outcomes compared to conventional organ recovery.
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Affiliation(s)
- Christopher J E Watson
- University of Cambridge Department of Surgery, Addenbrooke's Hospital, Cambridge, UK.,National Institute of Health Research (NIHR) Cambridge Biomedical Research Centre, and the NIHR Blood and Transplant Research Unit (BTRU) at the University of Cambridge in collaboration with Newcastle University and in partnership with NHS Blood and Transplant (NHSBT), Cambridge, UK.,Cambridge Transplant Unit, Cambridge University Hospitals NHS Trust, Addenbrooke's Hospital, Cambridge, UK
| | - Fiona Hunt
- The Scottish Liver Transplant Unit, Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh, UK
| | - Simon Messer
- Royal Papworth Hospital, Papworth Everard, Cambridge, UK
| | - Ian Currie
- The Scottish Liver Transplant Unit, Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh, UK
| | - Stephen Large
- Royal Papworth Hospital, Papworth Everard, Cambridge, UK
| | - Andrew Sutherland
- The Scottish Liver Transplant Unit, Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh, UK
| | - Keziah Crick
- Cambridge Transplant Unit, Cambridge University Hospitals NHS Trust, Addenbrooke's Hospital, Cambridge, UK
| | - Stephen J Wigmore
- The Scottish Liver Transplant Unit, Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh, UK.,Department of Clinical Surgery, University of Edinburgh, Edinburgh, UK
| | - Corrina Fear
- Cambridge Transplant Unit, Cambridge University Hospitals NHS Trust, Addenbrooke's Hospital, Cambridge, UK
| | - Sorina Cornateanu
- The Scottish Liver Transplant Unit, Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh, UK
| | | | - John D Terrace
- The Scottish Liver Transplant Unit, Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh, UK
| | - Sara Upponi
- Department of Radiology, Cambridge University Hospitals NHS Trust, Addenbrooke's Hospital, Cambridge, UK
| | - Rhiannon Taylor
- Statistics and Clinical Studies, NHS Blood and Transplant, Bristol, UK
| | - Elisa Allen
- Statistics and Clinical Studies, NHS Blood and Transplant, Bristol, UK
| | - Andrew J Butler
- University of Cambridge Department of Surgery, Addenbrooke's Hospital, Cambridge, UK.,National Institute of Health Research (NIHR) Cambridge Biomedical Research Centre, and the NIHR Blood and Transplant Research Unit (BTRU) at the University of Cambridge in collaboration with Newcastle University and in partnership with NHS Blood and Transplant (NHSBT), Cambridge, UK.,Cambridge Transplant Unit, Cambridge University Hospitals NHS Trust, Addenbrooke's Hospital, Cambridge, UK
| | - Gabriel C Oniscu
- The Scottish Liver Transplant Unit, Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Little France Crescent, Edinburgh, UK.,Department of Clinical Surgery, University of Edinburgh, Edinburgh, UK
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13
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Ruggeri L, Franco A, Alba AC, Lembo R, Frassoni S, Scandroglio AM, Calabrò MG, Zangrillo A, Pappalardo F. Coagulation Derangements in Patients With Refractory Cardiac Arrest Treated With Extracorporeal Cardiopulmonary Resuscitation. J Cardiothorac Vasc Anesth 2018; 33:1877-1882. [PMID: 30655200 DOI: 10.1053/j.jvca.2018.11.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Extracorporeal cardiopulmonary resuscitation (eCPR) with venoarterial extracorporeal membrane oxygenation (VA-ECMO) is gaining importance as a rescue therapy for refractory cardiac arrest. VA-ECMO, especially in the setting of eCPR, is plagued by hemorrhagic and thromboembolic complications. The authors' aims were to describe the coagulation profile in refractory cardiac arrest and assess its prognostic role. DESIGN Single-center retrospective study. SETTING Cardiac surgical intensive care unit of a university hospital. PARTICIPANTS One hundred eighty-eight patients treated with eCPR for intra-hospital and out-of-hospital refractory cardiac arrest, between 2008 and 2017. INTERVENTIONS The authors retrospectively analyzed data from the first blood sample drawn during cannulation for VA-ECMO to understand the association of coagulation parameters with survival to hospital discharge, number of blood components transfused, anticoagulation therapy, serum lactate levels, no-flow time, and low-flow time. MEASUREMENTS AND MAIN RESULTS Platelet count was 126 ± 79 × 109/L and in 17% of the population it was lower than 50 × 109/L, prothrombin time was 3.22 ± 4.01, activated partial thromboplastin time was 117 ± 78 seconds, fibrinogen was 186 ± 148 mg/dL, antithrombin was 47 ± 16%, and D-dimer was ≥2-fold the normal upper limit in 95% of patients. Fifty percent of patients had a disseminated intravascular coagulation (DIC) score ≥6 (52% among out-of-hospital cardiac arrest, 33% among in-hospital cardiac arrest), according to the criteria of the Japanese Society on Thrombosis and Hemostasis (2016). The median DIC score was 5.5 points (interquartile range 4-8), significantly different between survivors and nonsurvivors (4 [3-6] v 6 [4-8], p = 0.007). Every DIC score point contributed to the mortality risk (OR 1.34, 95% CI 1.09-1.67, p = 0.006). Patients with overt DIC less frequently received anticoagulants (28.6% v 55.9%, p = 0.002), started anticoagulant therapy later (12 [10-23] v 8.5 [5-12] hours, p = 0.045), and received a larger quantity of blood products (11 [4-23] v 3 [0-8.5] units, p < 0.0001). CONCLUSION Coagulation derangements are frequent in patients with refractory cardiac arrest and have important consequences for eCPR management for anticoagulant therapy and blood product transfusion. The presence of DIC diagnostic criteria should be considered among the prognostic factors in this population of patients.
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Affiliation(s)
- Laura Ruggeri
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Annalisa Franco
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Ada Carla Alba
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Rosalba Lembo
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Samuele Frassoni
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Anna Mara Scandroglio
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Maria Grazia Calabrò
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alberto Zangrillo
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Federico Pappalardo
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy.
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14
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Hessheimer AJ, Vendrell M, Muñoz J, Ruíz Á, Díaz A, Sigüenza LF, Lanzilotta JR, Delgado Oliver E, Fuster J, Navasa M, García-Valdecasas JC, Taurá P, Fondevila C. Heparin but not tissue plasminogen activator improves outcomes in donation after circulatory death liver transplantation in a porcine model. Liver Transpl 2018; 24:665-676. [PMID: 29351369 DOI: 10.1002/lt.25013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 12/07/2017] [Accepted: 01/06/2018] [Indexed: 02/07/2023]
Abstract
Ischemic-type biliary lesions (ITBLs) arise most frequently after donation after circulatory death (DCD) liver transplantation and result in high morbidity and graft loss. Many DCD grafts are discarded out of fear for this complication. In theory, microvascular thrombi deposited during donor warm ischemia might be implicated in ITBL pathogenesis. Herein, we aim to evaluate the effects of the administration of either heparin or the fibrinolytic drug tissue plasminogen activator (TPA) as means to improve DCD liver graft quality and potentially avoid ITBL. Donor pigs were subjected to 1 hour of cardiac arrest (CA) and divided among 3 groups: no pre-arrest heparinization nor TPA during postmortem regional perfusion; no pre-arrest heparinization but TPA given during regional perfusion; and pre-arrest heparinization but no TPA during regional perfusion. In liver tissue sampled 1 hour after CA, fibrin deposition was not detected, even when heparin was not given prior to arrest. Although it was not useful to prevent microvascular clot formation, pre-arrest heparin did offer cytoprotective effects during CA and beyond, reflected in improved flows during regional perfusion and better biochemical, functional, and histological parameters during posttransplantation follow-up. In conclusion, this study demonstrates the lack of impact of TPA use in porcine DCD liver transplantation and adds to the controversy over whether the use of TPA in human DCD liver transplantation really offers any protective effect. On the other hand, when it is administered prior to CA, heparin does offer anti-inflammatory and other cytoprotective effects that help improve DCD liver graft quality. Liver Transplantation 24 665-676 2018 AASLD.
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Affiliation(s)
- Amelia J Hessheimer
- Department of Surgery, Institut de Malalties Digestives I Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Marina Vendrell
- Departments of Anesthesia, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Javier Muñoz
- Department of Surgery, Institut de Malalties Digestives I Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Ángel Ruíz
- Department of Hepatobiliary and Liver Transplant Surgery, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Alba Díaz
- Pathology, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Luís Flores Sigüenza
- Department of Surgery, Institut de Malalties Digestives I Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Jorge Rodríguez Lanzilotta
- Department of Surgery, Institut de Malalties Digestives I Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Eduardo Delgado Oliver
- Department of Surgery, Institut de Malalties Digestives I Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Jose Fuster
- Department of Surgery, Institut de Malalties Digestives I Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Miquel Navasa
- Liver Unit, Institut de Malalties Digestives i Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Juan Carlos García-Valdecasas
- Department of Surgery, Institut de Malalties Digestives I Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Pilar Taurá
- Departments of Anesthesia, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - Constantino Fondevila
- Department of Surgery, Institut de Malalties Digestives I Metabòliques, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Hospital Clínic, University of Barcelona, Barcelona, Spain.,Department of Hepatobiliary and Liver Transplant Surgery, Hospital Clínic, University of Barcelona, Barcelona, Spain
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15
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A literature-based cost analysis of tissue plasminogen activator for prevention of biliary stricture in donation after circulatory death liver transplantation. Am J Surg 2018; 216:959-962. [PMID: 29724406 DOI: 10.1016/j.amjsurg.2018.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 04/02/2018] [Accepted: 04/11/2018] [Indexed: 01/08/2023]
Abstract
INTRODUCTION This study sought to approximate the cost-effectiveness of tPA utilization for prevention of biliary strictures (PTBS) in donation after circulatory death liver transplantation (DCD-LT). METHODS Previously-reported PTBS rates in DCD-LT with and without tPA were used to calculate the number needed to treat (NNT) for prevention of one PTBS. The incremental cost of PTBS was then used to determine the cost effectiveness of tPA for prevention of PTBS. RESULTS The incidence of PTBS in the setting of tPA administration was 20%, while incidence in patients without tPA use was 43% (p < 0.001). Meta-analysis demonstrated a risk reduction of 15.7%, which translated into a NNT of 6.4. Cost associated with treating 6.4 patients was $50,353. Based on an incremental cost of $81,888 associated with PTBS management, use of tPA in DCD-LT protocols was estimated to save $31,528 per PTBS prevented. CONCLUSION Utilization of tPA in DCD-LT protocols represents one possible cost-effective strategy for prevention of PTBS in DCD-LT.
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16
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Bohorquez H, Seal JB, Cohen AJ, Kressel A, Bugeaud E, Bruce DS, Carmody IC, Reichman TW, Battula N, Alsaggaf M, Therapondos G, Bzowej N, Tyson G, Joshi S, Nicolau-Raducu R, Girgrah N, Loss GE. Safety and Outcomes in 100 Consecutive Donation After Circulatory Death Liver Transplants Using a Protocol That Includes Thrombolytic Therapy. Am J Transplant 2017; 17:2155-2164. [PMID: 28276658 DOI: 10.1111/ajt.14261] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/14/2017] [Accepted: 02/22/2017] [Indexed: 02/06/2023]
Abstract
Donation after circulatory death (DCD) liver transplantation (LT) reportedly yields inferior survival and increased complication rates compared with donation after brain death (DBD). We compare 100 consecutive DCD LT using a protocol that includes thrombolytic therapy (late DCD group) to an historical DCD group (early DCD group n = 38) and a cohort of DBD LT recipients (DBD group n = 435). Late DCD LT recipients had better 1- and 3-year graft survival rates than early DCD LT recipients (92% vs. 76.3%, p = 0.03 and 91.4% vs. 73.7%, p = 0.01). Late DCD graft survival rates were comparable to those of the DBD group (92% vs. 93.3%, p = 0.24 and 91.4% vs. 88.2%, p = 0.62). Re-transplantation occurred in 18.4% versus 1% for the early and late DCD groups, respectively (p = 0.001). Patient survival was similar in all three groups. Ischemic-type biliary lesions (ITBL) occurred in 5%, 3%, and 0.2% for early DCD, late DCD, and DBD groups, respectively, but unlike in the early DCD group, in the late DCD group ITBL was endoscopically managed and resolved in each case. Using a protocol that includes a thrombolytic therapy, DCD LT yielded patient and graft survival rates comparable to DBD LT.
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Affiliation(s)
- H Bohorquez
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - J B Seal
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - A J Cohen
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - A Kressel
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA
| | - E Bugeaud
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA
| | - D S Bruce
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA
| | - I C Carmody
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - T W Reichman
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA
| | - N Battula
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA
| | - M Alsaggaf
- School of Medicine, University of Queensland, New Orleans, LA
| | - G Therapondos
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - N Bzowej
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - G Tyson
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - S Joshi
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - R Nicolau-Raducu
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA
| | - N Girgrah
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
| | - G E Loss
- Multi-Organ Transplant Institute, Ochsner Clinic Foundation, New Orleans, LA.,School of Medicine, University of Queensland, New Orleans, LA
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17
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Activation of Fibrinolysis, But Not Coagulation, During End-Ischemic Ex Situ Normothermic Machine Perfusion of Human Donor Livers. Transplantation 2017; 101:e42-e48. [DOI: 10.1097/tp.0000000000001562] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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18
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Verhoeven CJ, Simon TC, de Jonge J, Doukas M, Biermann K, Metselaar HJ, Ijzermans JNM, Polak WG. Liver grafts procured from donors after circulatory death have no increased risk of microthrombi formation. Liver Transpl 2016; 22:1676-1687. [PMID: 27542167 DOI: 10.1002/lt.24608] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Accepted: 08/01/2016] [Indexed: 02/07/2023]
Abstract
Microthrombi formation provoked by warm ischemia and vascular stasis is thought to increase the risk of nonanastomotic strictures (NAS) in liver grafts obtained by donation after circulatory death (DCD). Therefore, potentially harmful intraoperative thrombolytic therapy has been suggested as a preventive strategy against NAS. Here, we investigated whether there is histological evidence of microthrombi formation during graft preservation or directly after reperfusion in DCD livers and the development of NAS. Liver biopsies collected at different time points during graft preservation and after reperfusion were triple-stained with hematoxylin-eosin (H & E), von Willebrand factor VIII (VWF), and Fibrin Lendrum (FL) to evaluate the presence of microthrombi. In a first series of 282 sections obtained from multiple liver segments of discarded DCD grafts, microthrombi were only present in 1%-3% of the VWF stainings, without evidence of thrombus formation in paired H & E and FL stainings. Additionally, analysis of 132 sections obtained from matched, transplanted donation after brain death and DCD grafts showed no difference in microthrombi formation (11.3% versus 3.3% respectively; P = 0.082), and no relation to the development of NAS (P = 0.73). Furthermore, no microthrombi were present in perioperative biopsies in recipients who developed early hepatic artery thrombosis. Finally, the presence of microthrombi did not differ before or after additional flushing of the graft with preservation solution. In conclusion, the results of our study derogate from the hypothesis that DCD livers have an increased tendency to form microthrombi. It weakens the explanation that microthrombi formation is a main causal factor in the development of NAS in DCD and that recipients could benefit from intraoperative thrombolytic therapy to prevent NAS following liver transplantation. Liver Transplantation 22 1676-1687 2016 AASLD.
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Affiliation(s)
- Cornelia J Verhoeven
- Division of Hepatopancreatobiliary and Transplantation Surgery, Departments of Surgery, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Tiarah C Simon
- Division of Hepatopancreatobiliary and Transplantation Surgery, Departments of Surgery, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Jeroen de Jonge
- Division of Hepatopancreatobiliary and Transplantation Surgery, Departments of Surgery, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Michael Doukas
- Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Katharina Biermann
- Pathology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Herold J Metselaar
- Gastroenterology and Hepatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Jan N M Ijzermans
- Division of Hepatopancreatobiliary and Transplantation Surgery, Departments of Surgery, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Wojciech G Polak
- Division of Hepatopancreatobiliary and Transplantation Surgery, Departments of Surgery, University Medical Center Rotterdam, Rotterdam, the Netherlands
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19
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Hessheimer AJ, Cárdenas A, García-Valdecasas JC, Fondevila C. Can we prevent ischemic-type biliary lesions in donation after circulatory determination of death liver transplantation? Liver Transpl 2016; 22:1025-33. [PMID: 27082839 DOI: 10.1002/lt.24460] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 04/02/2016] [Indexed: 12/23/2022]
Abstract
The pool of livers for transplantation consists of an increasingly greater proportion of marginal grafts, in particular those arising through donation after circulatory determination of death (DCD). However, a primary factor limiting the use of marginal livers, and, thereby, the applicability of liver transplantation in general, is concern over the subsequent development of ischemic-type biliary lesion (ITBL). ITBL is a devastating complication of liver transplantation; in its most severe forms, recipients suffer frequent infectious complications that require repeated invasive biliary procedures and ultimately result in either retransplantation or death. In the present review article, we discuss our current understanding of ITBL pathogenesis as it pertains to DCD, in particular. We discuss the most relevant theories regarding its development and provide a comprehensive overview of the most promising strategies we have available today to prevent the appearance of ITBL, strategies that may, furthermore, allow us to transplant a greater proportion of marginal livers in the future. Liver Transplantation 22 1025-1033 2016 AASLD.
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Affiliation(s)
- Amelia J Hessheimer
- General and Digestive Surgery and, University of Barcelona, Barcelona, Spain
| | - Andrés Cárdenas
- Gastrointestinal/Liver Unit, Institut de Malalties Digestives i Metabòliques, Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona, Barcelona, Spain
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20
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Blasi A, Hessheimer AJ, Beltrán J, Pereira A, Fernández J, Balust J, Martínez-Palli G, Fuster J, Navasa M, García-Valdecasas JC, Taurá P, Fondevila C. Liver Transplant From Unexpected Donation After Circulatory Determination of Death Donors: A Challenge in Perioperative Management. Am J Transplant 2016; 16:1901-8. [PMID: 26601629 DOI: 10.1111/ajt.13621] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 10/28/2015] [Accepted: 11/03/2015] [Indexed: 01/25/2023]
Abstract
Unexpected donation after circulatory determination of death (uDCD) liver transplantation is a complex procedure, in particular when it comes to perioperative recipient management. However, very little has been published to date regarding intraoperative and immediate postoperative care in this setting. Herein, we compare perioperative events in uDCD liver recipients with those of a matched group of donation after brain death liver recipients. We demonstrate that the former group of recipients suffers significantly greater hemodynamic instability and derangements in coagulation following graft reperfusion. Based on our experience, we recommend a proactive recipient management strategy in uDCD liver transplantation that involves early use of vasopressor support; maintaining adequate intraoperative levels of red cells, platelets, and fibrinogen; and routinely administering tranexamic acid before graft reperfusion.
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Affiliation(s)
- A Blasi
- Anesthesia, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - A J Hessheimer
- General and Digestive Surgery, Institut de Malalties Digestives i Metabòliques, Hospital Clínic, Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
| | - J Beltrán
- Anesthesia, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - A Pereira
- Hemotherapy & Hemostasis, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - J Fernández
- Hepatology, Institut de Malalties Digestives i Metabòliques, Hospital Clínic, CIBERehd, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - J Balust
- Anesthesia, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - G Martínez-Palli
- Anesthesia, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - J Fuster
- General and Digestive Surgery, Institut de Malalties Digestives i Metabòliques, Hospital Clínic, Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
| | - M Navasa
- Hepatology, Institut de Malalties Digestives i Metabòliques, Hospital Clínic, CIBERehd, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - J C García-Valdecasas
- General and Digestive Surgery, Institut de Malalties Digestives i Metabòliques, Hospital Clínic, Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
| | - P Taurá
- Anesthesia, Hospital Clínic, University of Barcelona, Barcelona, Spain
| | - C Fondevila
- General and Digestive Surgery, Institut de Malalties Digestives i Metabòliques, Hospital Clínic, Centro de Investigación Biomédica en Red Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain
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21
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Laing RW, Scalera I, Isaac J, Mergental H, Mirza DF, Hodson J, Wilkin RJW, Perera MTPR, Muiesan P. Liver Transplantation Using Grafts From Donors After Circulatory Death: A Propensity Score-Matched Study From a Single Center. Am J Transplant 2016; 16:1795-804. [PMID: 26725645 DOI: 10.1111/ajt.13699] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 11/29/2015] [Accepted: 12/15/2015] [Indexed: 01/25/2023]
Abstract
The use of livers from donation after circulatory death (DCD) is increasing, but concerns exist regarding outcomes following use of grafts from "marginal" donors. To compare outcomes in transplants using DCD and donation after brain death (DBD), propensity score matching was performed for 973 patients with chronic liver disease and/or malignancy who underwent primary whole-liver transplant between 2004 and 2014 at University Hospitals Birmingham NHS Foundation Trust. Primary end points were overall graft and patient survival. Secondary end points included postoperative, biliary and vascular complications. Over 10 years, 234 transplants were carried out using DCD grafts. Of the 187 matched DCDs, 82.9% were classified as marginal per British Transplantation Society guidelines. Kaplan-Meier analysis of graft and patient survival found no significant differences for either outcome between the paired DCD and DBD patients (p = 0.162 and p = 0.519, respectively). Aspartate aminotransferase was significantly higher in DCD recipients until 48 h after transplant (p < 0.001). The incidences of acute kidney injury and ischemic cholangiopathy were greater in DCD recipients (32.6% vs. 15% [p < 0.001] and 9.1% vs. 1.1% [p < 0.001], respectively). With appropriate recipient selection, the use of DCDs, including those deemed marginal, can be safe and can produce outcomes comparable to those seen using DBD grafts in similar recipients.
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Affiliation(s)
- R W Laing
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.,NIHR Liver Biomedical Research Unit, University Hospitals Birmingham, Birmingham, UK
| | - I Scalera
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - J Isaac
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.,Department of Liver Surgery, Birmingham Children's Hospital NHS Foundation Trust, Birmingham, UK
| | - H Mergental
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - D F Mirza
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.,Department of Liver Surgery, Birmingham Children's Hospital NHS Foundation Trust, Birmingham, UK
| | - J Hodson
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - R J W Wilkin
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.,NIHR Liver Biomedical Research Unit, University Hospitals Birmingham, Birmingham, UK
| | - M T P R Perera
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.,Department of Liver Surgery, Birmingham Children's Hospital NHS Foundation Trust, Birmingham, UK
| | - P Muiesan
- Department of Liver Surgery, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.,Department of Liver Surgery, Birmingham Children's Hospital NHS Foundation Trust, Birmingham, UK
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22
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Burlage LC, Karangwa SA, Lisman T, Martins PNA, Porte RJ. Thrombolytic protocol minimizes ischemic-type biliary complications in liver transplantation from donation after circulatory death donors. Liver Transpl 2015; 21:1231-2. [PMID: 26045355 DOI: 10.1002/lt.24185] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 05/13/2015] [Indexed: 02/07/2023]
Affiliation(s)
- Laura C Burlage
- Surgical Research Laboratory, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Section of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Shanice A Karangwa
- Surgical Research Laboratory, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Section of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Ton Lisman
- Surgical Research Laboratory, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Section of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Paulo N A Martins
- Section of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, Department of Surgery, University of Massachusetts Medical School, University of Massachusetts Medical Center, University of Massachusetts, Worcester, MA
| | - Robert J Porte
- Surgical Research Laboratory, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Section of Hepato-Pancreato-Biliary Surgery and Liver Transplantation, Department of Surgery, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
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23
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Seal JB, Selzner M, Loss G. Reply: To PMID 25545787. Liver Transpl 2015; 21:1233-4. [PMID: 26123226 DOI: 10.1002/lt.24206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 06/06/2015] [Indexed: 01/13/2023]
Affiliation(s)
- John B Seal
- Multi-Organ Transplant Institute, Ochsner Medical Center, New Orleans, LA
| | - Markus Selzner
- Multi-Organ Transplant Program, Department of Surgery, Toronto General Hospital, Toronto, ON, Canada
| | - George Loss
- Multi-Organ Transplant Institute, Ochsner Medical Center, New Orleans, LA
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