1
|
Rao K, Zhao Q, Bell J, Krishnan J, Henig O, Daniel J, Sawaya K, Albin O, Mills JP, Petty LA, Gregg K, Kaul D, Malani AN, Pogue J, Kaye KS. An Open-Label, Randomized Trial Comparing Fidaxomicin With Oral Vancomycin for the Treatment of Clostridioides difficile Infection in Hospitalized Patients Receiving Concomitant Antibiotics for Concurrent Infections. Clin Infect Dis 2024; 78:277-282. [PMID: 37797310 DOI: 10.1093/cid/ciad606] [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: 06/30/2023] [Revised: 09/17/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND Recurrent Clostridioides difficile infection (rCDI) occurs frequently, and concomitant antibiotic (CA) during the initial episode for treatment of non-CDI is a major risk factor. We sought to address the comparative efficacy of fidaxomicin versus vancomycin in the setting of CA during the initial CDI episode. METHODS We conducted a randomized, controlled, open-label trial at 2 hospitals in Ann Arbor, Michigan. We consecutively consented and enrolled hospitalized patients ≥18 years old with diarrhea, a positive test for C. difficile, and ≥1 qualifying CA. Complicated CDI, CDI treatment for >24 hours prior to enrollment, and planned long-term (>12 weeks) CA use were notable exclusions. Clinical cure was defined as resolution of diarrhea for 2 consecutive days maintained until 2 days after therapy, and rCDI as recurrent diarrhea with positive testing ≤30 days after initial treatment. Patients were randomized to fidaxomicin or vancomycin. RESULTS Baseline characteristics were similar in the 2 groups of 144 patients. Rates of clinical cure (73% vs 62.9%, P = .195) and rCDI (3.3% vs 4.0%; P > .99) were similar for fidaxomicin and vancomycin in the intention-to-treat and per-protocol cohorts, respectively. Only 4 patients developed rCDI. CONCLUSIONS In this study of patients with CDI receiving CA, a numerically higher proportion were cured with fidaxomicin versus vancomycin, but this result did not reach statistical significance. Overall recurrence was lower than anticipated in both arms compared with previous studies that did not extend duration of CDI treatment during CA. CLINICAL TRIALS REGISTRATION www.clinicaltrials.gov (NCT02692651).
Collapse
Affiliation(s)
- Krishna Rao
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Qianzi Zhao
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Justin Bell
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Jay Krishnan
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Oryan Henig
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Jolene Daniel
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Kara Sawaya
- Division of Infectious Diseases, Trinity Health Michigan, Ann Arbor, Michigan, USA
| | - Owen Albin
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - John P Mills
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Lindsay A Petty
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Kevin Gregg
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Daniel Kaul
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| | - Anurag N Malani
- Division of Infectious Diseases, Trinity Health Michigan, Ann Arbor, Michigan, USA
| | - Jason Pogue
- Department of Clinical Pharmacy at the University of Michigan College of Pharmacy, University of Michigan, Ann Arbor, Michigan, USA
| | - Keith S Kaye
- Department of Internal Medicine, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
- Division of Infectious Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan, USA
| |
Collapse
|
2
|
Darkow A, Johnson S, Walker H, Priest DH. When Should Oral Vancomycin Prophylaxis be Used to Prevent C. difficile Infection? Curr Infect Dis Rep 2023. [DOI: 10.1007/s11908-023-00796-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
3
|
So M, Tsai H, Swaminathan N, Bartash R. Bring it on: Top five antimicrobial stewardship challenges in transplant infectious diseases and practical strategies to address them. ANTIMICROBIAL STEWARDSHIP & HEALTHCARE EPIDEMIOLOGY : ASHE 2022; 2:e72. [PMID: 36483373 PMCID: PMC9726551 DOI: 10.1017/ash.2022.53] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 06/17/2023]
Abstract
Antimicrobial therapies are essential tools for transplant recipients who are at high risk for infectious complications. However, judicious use of antimicrobials is critical to preventing the development of antimicrobial resistance. Treatment of multidrug-resistant organisms is challenging and potentially leads to therapies with higher toxicities, intravenous access, and intensive drug monitoring for interactions. Antimicrobial stewardship programs are crucial in the prevention of antimicrobial resistance, though balancing these strategies with the need for early and frequent antibiotic therapy in these immunocompromised patients can be challenging. In this review, we summarize 5 frequently encountered transplant infectious disease stewardship challenges, and we suggest strategies to improve practices for each clinical syndrome. These 5 challenging areas are: asymptomatic bacteriuria in kidney transplant recipients, febrile neutropenia in hematopoietic stem cell transplantation, antifungal prophylaxis in liver and lung transplantation, treatment of left-ventricular assist device infections, and Clostridioides difficile infection in solid-organ and hematopoietic stem-cell transplant recipients. Common themes contributing to these challenges include limited data specific to transplant patients, shortcomings in diagnostic testing, and uncertainties in pharmacotherapy.
Collapse
Affiliation(s)
- Miranda So
- Sinai Health-University Health Network Antimicrobial Stewardship Program, University Health Network, Toronto, Ontario, Canada
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Helen Tsai
- Division of Infectious Diseases, Department of Medicine, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, United States
| | - Neeraja Swaminathan
- Division of Infectious Diseases, Department of Medicine, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, United States
| | - Rachel Bartash
- Division of Infectious Diseases, Department of Medicine, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, United States
| |
Collapse
|
4
|
Oral Vancomycin Prophylaxis for Primary and Secondary Prevention of Clostridioides difficile Infection in Patients Treated with Systemic Antibiotic Therapy: A Systematic Review, Meta-Analysis and Trial Sequential Analysis. Antibiotics (Basel) 2022; 11:antibiotics11020183. [PMID: 35203786 PMCID: PMC8868369 DOI: 10.3390/antibiotics11020183] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/26/2022] [Accepted: 01/28/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Clostridioides difficile infection (CDI) is associated with substantial morbidity and mortality as well as high propensity of recurrence. Systemic antibiotic therapy (SAT) represents the top inciting factor of CDI, both primary and recurrent (rCDI). Among the many strategies aimed to prevent CDI in high-risk subjects undergoing SAT, oral vancomycin prophylaxis (OVP) appears promising under a cost-effectiveness perspective. Methods: A systematic review with meta-analysis and trial sequential analysis (TSA) of studies assessing the efficacy and the safety of OVP to prevent primary CDI and rCDI in persons undergoing SAT was carried out. PubMed and EMBASE were searched until 30 September 2021. The protocol was pre-registered on PROSPERO (CRD42019145543). Results: Eleven studies met the inclusion criteria, only one being a randomized controlled trial (RCT). Overall, 929 subjects received OVP and 2011 represented the comparator group (no active prophylaxis). OVP exerted a strong protective effect for CDI occurrence: odds ratio 0.14, 95% confidence interval 0.04–0.38. Moderate heterogeneity was observed: I2 54%. This effect was confirmed throughout several subgroup analyses, including prevention of primary CDI versus rCDI. TSA results pointed at the conclusive nature of the evidence. Results were robust to a variety of sensitivity and quantitative bias analyses, although the underlying evidence was deemed as low quality. No differences between the two groups were highlighted regarding the onset of vancomycin-resistant Enterococcus infections. Conclusions: OVP appears to be an efficacious option for prevention of CDI in high-risk subjects undergoing SAT. Nevertheless, additional data from RCTs are needed to establish OVP as good clinical practice and define optimal dosage and duration.
Collapse
|
5
|
Ortiz-Balbuena J, Royuela A, Calderón-Parra J, Martínez-Ruiz R, Asensio-Vegas Á, Múñez E, Valencia-Alijo Á, Gutiérrez-Rojas Á, Ussetti P, Cuervas-Mons V, Segovia-Cubero J, Portolés-Pérez J, Ramos-Martínez A. Risk Factors for Clostridioides Difficile Diarrhea In Solid Organ Transplantation Recipients. Transplant Proc 2021; 53:2826-2832. [PMID: 34772488 DOI: 10.1016/j.transproceed.2021.09.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/22/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND There is limited knowledge about risk factors for Clostridioides difficile infection (CDI) and recurrent CDI in solid organ transplant (SOT) recipients. METHODS A case-control study of CDI in SOT recipients compared with controls (SOT recipients who did not present CDI). RESULTS Sixty-seven patients from 1089 SOT recipients (6.2%) suffered at least one episode of CDI. The mean age was 55 ± 12 years and 20 cases (69%) were men. The accumulated incidence was 8% in liver transplantation, 6.2% in lung transplantation, 5.4% in heart transplantation, and 4.7% in kidney transplantation. Twenty-nine cases (43.3%) were diagnosed during the first 3 months after SOT. Forty-one cases (61.2%) were hospital acquired. Thirty-one patients with CDI presented with mild-moderate infection (46.3%), 30 patients with severe infection (44.8%), and 6 patients with severe-complicated disease (9%). Independent variables found to be related with CDI were hospitalization in the previous 3 months (odds ratio: 2.99; [95% confidence interval 1.21-7.37]) and the use of quinolones in the previous month (odds ratio: 3.71 [95% confidence interval 1.16-11.8]). Eleven patients (16.4%) had at least one recurrence of CDI. Previous treatment with amoxicillin-clavulanate, severe-complicated index episode, and high serum creatinine were associated with recurrent CDI in the univariant analysis CONCLUSIONS: Liver transplant recipients presented the highest incidence of CDI among SOT recipients. Risk factors for CDI were hospitalization in the previous 3 months and the use of quinolones in the previous month.
Collapse
Affiliation(s)
- Jorge Ortiz-Balbuena
- Departamento de Medicina Interna, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Ana Royuela
- Biostatistics Unit, Puerta de Hierro Biomedical Research Institute (IDIPHISA), CIBERESP, Madrid, Spain
| | - Jorge Calderón-Parra
- Unidad de Enfermedades Infecciosas, Departamento de Medicina Interna, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Rocío Martínez-Ruiz
- Departamento de Microbiología, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Ángel Asensio-Vegas
- Departamento de Medicina Preventiva, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Elena Múñez
- Unidad de Enfermedades Infecciosas, Departamento de Medicina Interna, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Ángela Valencia-Alijo
- Unidad de Enfermedades Infecciosas, Departamento de Medicina Interna, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Ángela Gutiérrez-Rojas
- Unidad de Enfermedades Infecciosas, Departamento de Medicina Interna, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Piedad Ussetti
- Departamento de Neumología, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Valentín Cuervas-Mons
- Unidad de Trasplante Hepático, Departamento de Medicina Interna, Universidad Autónoma de Madrid, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | | | - José Portolés-Pérez
- Departamento de Nefrología, Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - Antonio Ramos-Martínez
- Unidad de Enfermedades Infecciosas, Departamento de Medicina Interna, Instituto de Investigación Sanitaria Puerta de Hierro - Segovia de Arana (IDIPHSA), Universidad Autónoma de Madrid, Hospital Universitario Puerta de Hierro, Madrid, Spain.
| |
Collapse
|
6
|
Bogdanová K, Doubravská L, Vágnerová I, Hricová K, Pudová V, Röderová M, Papajk J, Uvízl R, Langová K, Kolář M. Clostridioides difficile and Vancomycin-Resistant Enterococci in COVID-19 Patients with Severe Pneumonia. Life (Basel) 2021; 11:life11111127. [PMID: 34833003 PMCID: PMC8653967 DOI: 10.3390/life11111127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/14/2021] [Accepted: 10/20/2021] [Indexed: 01/08/2023] Open
Abstract
Broad-spectrum antibiotics administered to patients with severe COVID-19 pneumonia pose a risk of infection caused by Clostridioides difficile. This risk is reduced mainly by strict hygiene measures and early de-escalation of antibiotic therapy. Recently, oral vancomycin prophylaxis (OVP) has also been discussed. This retrospective study aimed to assess the prevalence of C. difficile in critical COVID-19 patients staying in an intensive care unit of a tertiary hospital department of anesthesiology, resuscitation, and intensive care from November 2020 to May 2021 and the rates of vancomycin-resistant enterococci (VRE) after the introduction of OVP and to compare the data with those from controls in the pre-pandemic period (November 2018 to May 2019). During the COVID-19 pandemic, there was a significant increase in toxigenic C. difficile rates to 12.4% of patients, as compared with 1.6% in controls. The peak rates were noted in February 2021 (25% of patients), immediately followed by initiation of OVP, changes to hygiene precautions, and more rapid de-escalation of antibiotic therapy. Subsequently, toxigenic C. difficile detection rates started to fall. There was a nonsignificant increase in VRE detected in non-gastrointestinal tract samples to 8.9% in the COVID-19 group, as compared to 5.3% in the control group. Molecular analysis confirmed mainly clonal spread of VRE.
Collapse
Affiliation(s)
- Kateřina Bogdanová
- Department of Microbiology, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (K.B.); (I.V.); (M.K.)
| | - Lenka Doubravská
- Department of Anesthesiology, Resuscitation and Intensive Care, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (J.P.); (R.U.)
- Correspondence: ; Tel.: +420-588-445-979
| | - Iva Vágnerová
- Department of Microbiology, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (K.B.); (I.V.); (M.K.)
| | - Kristýna Hricová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic; (K.H.); (V.P.); (M.R.)
| | - Vendula Pudová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic; (K.H.); (V.P.); (M.R.)
| | - Magdaléna Röderová
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic; (K.H.); (V.P.); (M.R.)
| | - Jan Papajk
- Department of Anesthesiology, Resuscitation and Intensive Care, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (J.P.); (R.U.)
| | - Radovan Uvízl
- Department of Anesthesiology, Resuscitation and Intensive Care, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (J.P.); (R.U.)
| | - Kateřina Langová
- Department of Medical Biophysics, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 3, 779 00 Olomouc, Czech Republic;
| | - Milan Kolář
- Department of Microbiology, University Hospital Olomouc, I. P. Pavlova 6, 779 00 Olomouc, Czech Republic; (K.B.); (I.V.); (M.K.)
| |
Collapse
|
7
|
Kelly CR, Fischer M, Allegretti JR, LaPlante K, Stewart DB, Limketkai BN, Stollman NH. ACG Clinical Guidelines: Prevention, Diagnosis, and Treatment of Clostridioides difficile Infections. Am J Gastroenterol 2021; 116:1124-1147. [PMID: 34003176 DOI: 10.14309/ajg.0000000000001278] [Citation(s) in RCA: 197] [Impact Index Per Article: 65.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 03/25/2021] [Indexed: 02/06/2023]
Abstract
Clostridioides difficile infection occurs when the bacterium produces toxin that causes diarrhea and inflammation of the colon. These guidelines indicate the preferred approach to the management of adults with C. difficile infection and represent the official practice recommendations of the American College of Gastroenterology. The scientific evidence for these guidelines was evaluated using the Grading of Recommendations Assessment, Development, and Evaluation process. In instances where the evidence was not appropriate for Grading of Recommendations Assessment, Development, and Evaluation but there was consensus of significant clinical merit, key concept statements were developed using expert consensus. These guidelines are meant to be broadly applicable and should be viewed as the preferred, but not the only, approach to clinical scenarios.
Collapse
Affiliation(s)
- Colleen R Kelly
- Division of Gastroenterology, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Monika Fischer
- Division of Gastroenterology, Indiana University, Indianapolis, Indiana, USA
| | - Jessica R Allegretti
- Division of Gastroenterology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Kerry LaPlante
- Department of Pharmacy Practice, University of Rhode Island College of Pharmacy, Kingston, Rhode Island, USA
| | - David B Stewart
- Department of Surgery, University of Arizona Health Sciences, Tucson, Arizona, USA
| | - Berkeley N Limketkai
- Division of Digestive Diseases, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, California, USA
| | - Neil H Stollman
- Division of Gastroenterology, Alta Bates Summit Medical Center, East Bay Center for Digestive Health, Oakland, California, USA
| |
Collapse
|
8
|
Non LR, Ince D. Infectious Gastroenteritis in Transplant Patients. Gastroenterol Clin North Am 2021; 50:415-430. [PMID: 34024449 DOI: 10.1016/j.gtc.2021.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Infectious gastroenteritis is common after transplantation and can lead to increased morbidity and mortality. A wide range of organisms can lead to gastroenteritis in this patient population. Clostridioides difficile, cytomegalovirus, and norovirus are the most common pathogens. Newer diagnostic methods, especially multiplex polymerase chain reaction, have increased the diagnostic yield of infectious etiologies. In this review, we describe the epidemiology and risk factors for common infectious pathogens leading to gastroenteritis.
Collapse
Affiliation(s)
- Lemuel R Non
- Department of Internal Medicine, University of Iowa, Carver College of Medicine, GH SW34, 200 Hawkins Drive, Iowa City, IA 52242, USA
| | - Dilek Ince
- Department of Internal Medicine, University of Iowa, Carver College of Medicine, GH SE418, 200 Hawkins Drive, Iowa City, IA 52242, USA.
| |
Collapse
|
9
|
Johnson SW, Brown SV, Priest DH. Effectiveness of Oral Vancomycin for Prevention of Healthcare Facility-Onset Clostridioides difficile Infection in Targeted Patients During Systemic Antibiotic Exposure. Clin Infect Dis 2021; 71:1133-1139. [PMID: 31560051 DOI: 10.1093/cid/ciz966] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/26/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Limited retrospective data suggest prophylactic oral vancomycin may prevent Clostridioides difficile infection (CDI). We sought to evaluate the effectiveness of oral vancomycin for the prevention of healthcare facility-onset CDI (HCFO-CDI) in targeted patients. METHODS We conducted a randomized, prospective, open-label study at Novant Health Forsyth Medical Center in Winston-Salem, North Carolina, between October 2018 and April 2019. Included patients were randomized 1:1 to either oral vancomycin (dosed at 125 mg once daily while receiving systemic antibiotics and continued for 5 days postcompletion of systemic antibiotics [OVP]) or no prophylaxis. The primary endpoint was incidence of HCFO-CDI. Secondary endpoints included incidence of community-onset healthcare facility-associated CDI (CO-HCFA-CDI), incidence of vancomycin-resistant Enterococci (VRE) colonization after receiving OVP, adverse effects, and cost of OVP. RESULTS A total of 100 patients were evaluated, 50 patients in each arm. Baseline and hospitalization characteristics were similar, except antibiotic exposure. No events of HCFO-CDI were noted in the OVP group compared with 6 (12%) in the no-prophylaxis group (P = .03). CO-HCFA-CDI was identified in 2 patients who were previously diagnosed with HCFO-CDI. No patients developed new VRE colonization, with only 1 patient reporting mild gastrointestinal side effects to OVP. A total of 600 doses of OVP were given during the study, with each patient receiving an average of 12 doses. Total acquisition cost of OVP was $1302, $26.04 per patient. CONCLUSION OVP appears to protect against HCFO-CDI during in-patient stay in targeted patients during systemic antibiotic exposure. Further prospective investigation is warranted.
Collapse
Affiliation(s)
- Steven W Johnson
- Department of Pharmacy Practice, Campbell University College of Pharmacy and Health Science, Buies Creek, North Carolina, USA.,Department of Pharmacy, Novant Health Forsyth Medical Center, Winston-Salem, North Carolina, USA
| | - Shannon V Brown
- Department of Pharmacy Practice, Campbell University College of Pharmacy and Health Science, Buies Creek, North Carolina, USA
| | - David H Priest
- Novant Health Institute for Safety and Quality, Winston-Salem, North Carolina, USA.,Novant Health Infectious Disease Specialists, Winston-Salem, North Carolina, USA
| |
Collapse
|
10
|
Chaudhuri A, Goddard EA, Green M, Ardura MI. Diarrhea in the pediatric solid organ transplantation recipient: A multidisciplinary approach to diagnosis and management. Pediatr Transplant 2021; 25:e13886. [PMID: 33142366 DOI: 10.1111/petr.13886] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/25/2020] [Accepted: 09/09/2020] [Indexed: 12/11/2022]
Abstract
Diarrhea in the pediatric solid organ transplantation (SOT) recipient is a frequent complaint that is associated with significant morbidity and impaired quality of life. There are limited published data regarding the specific epidemiology, diagnostic evaluation, and treatment of diarrhea after SOT in children. Pediatric SOT recipients have an increased risk of developing diarrhea because of a generalized immunosuppressed state, epidemiologic exposures, and polypharmacy. There is a need to standardize the diagnostic evaluation of diarrhea in children after SOT to facilitate an accurate diagnosis and timely treatment. Herein, we review the available published data and propose a systematic, stepwise approach to the evaluation of diarrhea in this high-risk population, focusing on timely diagnosis of both infectious and non-infectious causes, in order to provide focused management. Prospective studies are needed to better assess the true prevalence, risk factors for, etiologies, and complications of diarrhea in pediatric SOT patients that will guide optimal management. Development of effective vaccines and antiviral therapies for enteric viruses may also contribute to improved outcomes.
Collapse
Affiliation(s)
- Abanti Chaudhuri
- Department of Pediatrics, Division of Nephrology, Stanford University, Stanford, CA, USA
| | - Elizabeth Anne Goddard
- Department of Pediatrics, Division of Pediatric Gastroenterology, Red Cross War Memorial Children's Hospital, University of Cape Town, Cape Town, South Africa
| | - Michael Green
- Department of Pediatrics, Division of Infectious Diseases, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Monica I Ardura
- Department of Pediatrics, Division of Infectious Diseases & Host Defense Program, Nationwide Children's Hospital & The Ohio State University, Columbus, OH, USA
| |
Collapse
|
11
|
Tariq R, Laguio-Vila M, Tahir MW, Orenstein R, Pardi DS, Khanna S. Efficacy of oral vancomycin prophylaxis for prevention of Clostridioides difficile infection: a systematic review and meta-analysis. Therap Adv Gastroenterol 2021; 14:1756284821994046. [PMID: 33747124 PMCID: PMC7905721 DOI: 10.1177/1756284821994046] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/21/2021] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Prevention of recurrent Clostridioides difficile infection (CDI) is a challenge in clinical practice, particularly in patients who need systemic antimicrobial therapy. We aimed to evaluate the role of oral vancomycin prophylaxis (OVP) in prevention of primary or future CDI in patients on systemic antimicrobial therapy. METHODS A systematic search of MEDLINE, Embase, and Web of Science was performed from 2000 to January 2020. We included case-control or cohort studies that included patients on systemic antimicrobial therapy who did or did not receive oral vancomycin prophylaxis (OVP) and were evaluated for development of CDI. Odds ratio (OR) estimates with 95% confidence intervals (CI) were calculated. RESULTS Four studies including 1352 patients evaluated OVP for primary CDI prevention, with CDI occurring in 29/402 patients on OVP (7.4%) compared with 10.4% (99/950) without OVP. Meta-analysis revealed no significant decrease in risk of CDI in patients who received OVP (OR, 0.18; 95% CI, 0.03-1.03; p = 0.06). There was significant heterogeneity with I 2 = 76%. Ten studies including 9258 patients evaluated OVP for secondary CDI prevention. Future CDI occurred in 91/713 patients on OVP (13.3%) compared with 21.9% (1875/8545) who did not receive OVP. Meta-analysis revealed a statistically significant decreased risk of future CDI (OR, 0.34; 95% CI, 0.20-0.59; p < 0.00001). Significant heterogeneity was seen with I 2 = 59%. DISCUSSION Based on observational data, OVP appears to decrease the risk of future CDI in patients with prior CDI who require systemic antimicrobial therapy. However, OVP was not effective for primary prevention of CDI.
Collapse
Affiliation(s)
- Raseen Tariq
- Divison of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
- Department of Internal Medicine, Rochester General Hospital, Rochester, NY, USA
| | | | | | | | - Darrell S. Pardi
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
| | - Sahil Khanna
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| |
Collapse
|
12
|
Clostridium difficile disease in solid organ transplant recipients: a recommended treatment paradigm. Curr Opin Organ Transplant 2021; 25:357-363. [PMID: 32618715 DOI: 10.1097/mot.0000000000000778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Organ transplant recipients have an increased incidence of Clostridium difficile disease and lower clinical response rates compared with the general population. Transplant specific treatment approaches are not defined. Therefore, a review of therapeutics in the transplant population is needed. RECENT FINDINGS A literature review on the current therapies for C. difficile was performed focusing on the evidence in transplant recipients and immunosuppressed populations. SUMMARY Transplant patients warrant an aggressive approach to treatment. The authors propose a suggested treatment paradigm for therapy.
Collapse
|
13
|
Ma KF, Liu YX, Jiao Z, Lv JH, Yang P, Wu JY, Yang S. Population Pharmacokinetics of Vancomycin in Kidney Transplant Recipients: Model Building and Parameter Optimization. Front Pharmacol 2020; 11:563967. [PMID: 33117163 PMCID: PMC7573825 DOI: 10.3389/fphar.2020.563967] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 09/10/2020] [Indexed: 11/20/2022] Open
Abstract
Background Depending on the renal function of patients and many other influencing factors, studies on vancomycin pharmacokinetics show significant inter- and intra-individual variability. The present study was conducted using a population pharmacokinetics method to investigate the pharmacokinetic parameters and identified their influencing covariates for intravenous vancomycin in adult kidney transplant recipients. Methods The drug monitoring data included 56 adult renal transplant recipients who received intravenous vancomycin as prophylactic medication. The analysis was performed by a population approach with NONMEM. Data were collected mainly during the first week after transplantation. Monitoring of vancomycin trough concentration in blood was initiated mainly 3–5 days after the initial administration. Results The one-compartment open model was optimal and adequately described the data. Body weight (WT) and estimated glomerular filtration rate (GFR) were identified as significant covariates of the pharmacokinetic parameters CL and V of intravenous vancomycin in the kidney transplant patients. The typical values of vancomycin CL and V were 2.08 L h-1 and 63.2 L, respectively. A dosage strategy scheme according to model results was also designed. Conclusion Both WT and GFR of the kidney transplant patients positively influence the pharmacokinetic parameters CL and V for intravenous vancomycin. Our population pharmacokinetic model provides a reference for vancomycin dosage adjustment in kidney transplant recipients.
Collapse
Affiliation(s)
- Kui-Fen Ma
- Department of Pharmacy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yi-Xi Liu
- Department of Pharmacy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zheng Jiao
- Department of Pharmacy, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jun-Hao Lv
- Department of Pharmacy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ping Yang
- Department of Pharmacy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jian-Yong Wu
- Department of Pharmacy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Si Yang
- Department of Pharmacy, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| |
Collapse
|
14
|
Carlson TJ, Gonzales-Luna AJ. Utilizing antibiotics to prevent Clostridioides difficile infection: does exposure to a risk factor decrease risk? A systematic review. J Antimicrob Chemother 2020; 75:2735-2742. [PMID: 32696044 DOI: 10.1093/jac/dkaa251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/04/2020] [Accepted: 05/11/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Antibiotic use is a major risk factor for Clostridioides difficile infection (CDI). However, antibiotics recommended for CDI treatment are being utilized in clinical practice as prophylactic agents. OBJECTIVES To comprehensively summarize and critically evaluate the published literature investigating the effectiveness of antibiotic CDI prophylaxis. METHODS A systematic search for relevant literature was conducted in PubMed and ClinicalTrials.gov. Two investigators independently screened each article for inclusion, and the references of the included articles were studied to identify additional relevant articles. Data extraction and an assessment of risk of bias was completed for all included studies. Unadjusted risk ratios and 95% CI were calculated for each study, with CDI being the outcome variable and prophylaxis (prophylaxis versus control) representing the exposure. RESULTS In total, 13 articles were identified in PubMed and 9 ongoing or unpublished trials were identified in ClinicalTrials.gov. The effect of antibiotic prophylaxis on CDI rates varied between studies; however, most favoured the use of antibiotic prophylaxis. CONCLUSIONS The authors of this review conclude that the current literature carries a high risk of bias and the results should be interpreted with caution.
Collapse
Affiliation(s)
- Travis J Carlson
- Department of Clinical Sciences, High Point University Fred Wilson School of Pharmacy, One University Parkway, High Point, NC 27268, USA
| | - Anne J Gonzales-Luna
- Department of Pharmacy Practice and Translational Research, University of Houston College of Pharmacy, 4849 Calhoun Road, Houston, TX 77204, USA
| |
Collapse
|
15
|
Abstract
PURPOSE OF REVIEW Clostridioides difficile infection (CDI) is a significant burden on the health system, especially due to high recurrence rates. Since the beginning of the CDI epidemic in early 2000s, many strategies for combatting recurrence have been explored, with moderate success so far. This review will focus on the most recent developments in recurrent CDI prevention and treatment. RECENT FINDINGS There are two main mechanisms of CDI recurrence: alteration in microbiome and poor antibody response. Development of new antibiotics aims to minimize damage to the microbiome. Fecal transplant or other microbiome replacement therapies seek to replenish the missing elements in the microbiome. Fecal microbiota transplant is the most effective treatment for prevention of CDI recurrenceso far, but is difficult to standardize and regulate, leading to efforts to develop microbiome-derived therapeutics. A deficiency in developing antibodies to C. difficile toxins is another mechanism of recurrence. Active immunization using toxoid vaccines or passive immunization using mAbs address this aspect. SUMMARY There are promising new treatments for recurrent CDI in development. Fecal microbiota transplant remains the most effective therapy for multiply recurrent CDI. New antibiotics, microbiome-derived therapeutics, and immunologic therapies are in development.
Collapse
|
16
|
Clostridioides difficile in transplant patients: early diagnosis, treatment, and prevention. Curr Opin Infect Dis 2020; 32:307-313. [PMID: 31116134 DOI: 10.1097/qco.0000000000000560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
PURPOSE OF REVIEW Clostridioides difficile infection is common in solid organ transplant and hematopoietic stem-cell transplant recipients and is associated with significant morbidity and mortality. These populations are also underrepresented in clinical trials, making optimal management difficult. Because of this, management of these populations follows national guideline recommendations. This review aims to summarize the recent relevant literature pertaining to the clinical management of C. difficile infection in transplant patients, with a particular focus on diagnosis, treatment, and prevention. RECENT FINDINGS Early diagnosis of C. difficile colonization may mitigate both horizontal and vertical transmission (progression from colonization to colitis) of infection. Once diagnosed, recent literature suggests antibiotic treatment should align with that recommended by national guidelines. Fecal microbiota transplant is an emerging therapy for recurrent C. difficile infection, and recent data have demonstrated safety and efficacy. Prevention strategies including antimicrobial stewardship, probiotic administration, antibiotic administration, and bezlotoxumab may be beneficial in transplant populations, but more data are needed to confirm recent findings. SUMMARY Studies evaluating C. difficile infection in transplant patients are only recently starting to emerge. Further research is needed to identify optimal treatment and prevention strategies, and to examine novel strategies such as microbiome manipulation.
Collapse
|
17
|
Oral vancomycin prophylaxis for the prevention of Clostridium difficile infection: A systematic review and meta-analysis. Infect Control Hosp Epidemiol 2020; 41:1302-1309. [PMID: 32594929 DOI: 10.1017/ice.2020.277] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Recently, oral vancomycin prophylaxis (OVP) has been suggested for the prevention of Clostridium difficile infection (CDI). We conducted a systematic review and meta-analysis to investigate the efficacy and safety of this approach. DESIGN Systematic review and meta-analysis. METHODS We conducted a computerized search of MEDLINE, EMBASE, and Cochrane databases from inception to March 2019 for publications investigating OVP for CDI prevention. Results were screened for eligibility. Relevant data were extracted and analyzed. Publication bias was assessed using the Egger test. RESULTS Ultimately, 8 retrospective studies and 1 prospective study examining 2174 patients, published between 2016 and 2019 were included in the review. OVP was associated with decreased CDI (odds ratio, 0.263; 95% confidence interval, 0.13-0.52) with considerable heterogeneity (I2 = 61%). Meta-regression showed that total daily dose of OVP correlated with CDI, explaining 100% of heterogeneity between studies. Furthermore, 3 studies evaluated the risk of vancomycin-resistant enterococci (VRE) infection after OVP and found no significant increase. CONCLUSION Our results suggest that OVP might decrease CDI rates in at-risk populations, although this conclusion should be interpreted with caution. Higher daily doses of OVP might increase CDI. Although the use of OVP in high-risk patients may reduce CDI, this suggestion has yet to be validated by prospective blinded randomized controlled trials.
Collapse
|
18
|
Oral vancomycin prophylaxis against recurrent Clostridioides difficile infection: Efficacy and side effects in two hospitals. Infect Control Hosp Epidemiol 2020; 41:908-913. [PMID: 32539877 DOI: 10.1017/ice.2020.176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The data regarding the effectiveness of chemical prophylaxis against recurrent C. difficile infection (CDI) remain conflicting. DESIGN Retrospective cohort study on the effectiveness of oral vancomycin for prevention of recurrent CDI. SETTING Two academic centers in New York. METHODS Two participating hospitals implemented an automated alert recommending oral vancomycin 125 mg twice daily in patients with CDI history scheduled to receive systemic antimicrobials. Measured outcomes included breakthrough and recurrent CDI rates, defined as CDI during and 1 month after initiation of prophylaxis, respectively. A self-controlled, before-and-after study design was employed to examine the effect of vancomycin prophylaxis on the prevalence of vancomycin-resistant Enterococcus spp (VRE) colonization and infection. RESULTS We included 264 patients in the analysis. Breakthrough CDI was identified in 17 patients (6.4%; 95% confidence interval [CI], 3.8%-10.1%) and recurrent in 22 patients (8.3%; 95% CI, 5.3%-12.3%). Among the 102 patients with a history of CDI within the 3 months preceding prophylaxis, 4 patients (3.9%; 95% CIs, 1.1%-9.7%) had breakthrough CDI and 9 had recurrent disease (8.8%; 95% CIs, 4.1%-16.1%). In the 3-month period following vancomycin prophylaxis, we detected a statistically significant increase in both the absolute number of VRE (χ2, 0.003) and the ratio of VRE to VSE isolates (χ2, 0.003) compared to the combined period of 1.5 months preceding and the 3-4.5 months following prophylaxis. This effect persisted 6 months following prophylaxis. CONCLUSIONS Prophylactic vancomycin is an effective strategy to prevent CDI recurrence, but it increases the risk of VRE colonization. Thus, a careful selection of patients with high benefit-to-risk ratio is needed for the implementation of this preventive policy.
Collapse
|
19
|
Mendo-Lopez R, Villafuerte-Gálvez J, White N, Mahoney MV, Kelly CP, Alonso CD. Recent developments in the management of recurrent Clostridioides difficile infection. Anaerobe 2019; 62:102108. [PMID: 31606481 DOI: 10.1016/j.anaerobe.2019.102108] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 09/23/2019] [Accepted: 10/08/2019] [Indexed: 12/19/2022]
Abstract
Clostridioides (formerly Clostridium) difficile is responsible for a substantial burden of nosocomial infection. Recurrent C. difficile infection (rCDI) remains a concern due to its high morbidity, mortality, and cost. Despite the updated 2017 IDSA C. difficile treatment guidelines, there remains a lack of well-studied preventive control measures and treatment modalities for rCDI. There are ongoing efforts to develop novel therapies, such as new antibiotics with a lesser impact on gut microbiota and more targeted therapies, such as bacteriotherapy. This mini review highlights key rCDI management updates, preventive measures and ongoing research on novel treatment strategies including bacteriotherapy.
Collapse
Affiliation(s)
- Rafael Mendo-Lopez
- Department of Medicine, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Javier Villafuerte-Gálvez
- Department of Medicine, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Nicole White
- Department of Medicine, Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Monica V Mahoney
- Department of Pharmacy, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Ciaran P Kelly
- Department of Medicine, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA, USA; Harvard Medical School, Boston, MA, USA
| | - Carolyn D Alonso
- Department of Medicine, Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.
| |
Collapse
|
20
|
Mullane KM, Dubberke ER. Management of Clostridioides (formerly Clostridium) difficile infection (CDI) in solid organ transplant recipients: Guidelines from the American Society of Transplantation Community of Practice. Clin Transplant 2019; 33:e13564. [PMID: 31002420 DOI: 10.1111/ctr.13564] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 04/09/2019] [Indexed: 02/06/2023]
Abstract
These updated guidelines from the American Society of Transplantation Infectious Diseases Community of Practice address the prevention and management of Clostridium difficile infection in solid organ transplant (SOT) recipients. Clostridioides (formerly Clostridium) difficile infection (CDI) is among the most common hospital acquired infections. In SOT recipients, the incidence of CDI varies by type and number or organs transplanted. While a meta-analysis of published literature found the prevalence of postoperative CDI in the general surgical population to be approximately 0.51%, the prevalence of CDI that is seen in the solid organ transplant population ranges from a low of 3.2% in the pancreatic transplant population to 12.7% in those receiving multiple organ transplants. There are no randomized, controlled trials evaluating the management of CDI in the SOT population. Herein is a review and summary of the currently available literature that has been synthesized into updated treatment guidelines for the management of CDI in the SOT population.
Collapse
Affiliation(s)
- Kathleen M Mullane
- Department of Medicine, Section of Infectious Diseases & Global Health, University of Chicago, Chicago, Illinois
| | - Erik R Dubberke
- Department of Medicine, Division of Infectious Diseases, School of Medicine, Washington University, St. Louis, Missouri
| | | |
Collapse
|
21
|
Morrisette T, Van Matre AG, Miller MA, Mueller SW, Bajrovic V, Abidi MZ, Benamu E, Kaiser JN, Barber GR, Chase S, Tobin J, Fish DN, Gutman JA. Oral Vancomycin Prophylaxis as Secondary Prevention Against Clostridioides difficile Infection in the Hematopoietic Stem Cell Transplantation and Hematologic Malignancy Population. Biol Blood Marrow Transplant 2019; 25:2091-2097. [PMID: 31255741 DOI: 10.1016/j.bbmt.2019.06.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/27/2019] [Accepted: 06/24/2019] [Indexed: 01/02/2023]
Abstract
Clostridioides difficile infection (CDI) is a common complication in the hematopoietic stem cell transplantation (HSCT) and hematologic malignancy (HM) population. CDI is associated with increased hospital length of stay, health care and societal costs, morbidity, and mortality. Identifying strategies for secondary prevention of CDI is of extreme importance in the HSCT/HM population. In this study, our primary objective was to evaluate the effectiveness and safety of an oral vancomycin prophylaxis (OVP) protocol for secondary prevention of CDI in a retrospective cohort of adult autologous/allogeneic HSCT recipients and patients with HM who did not undergo HSCT with a first CDI episode treated with concomitant broad-spectrum antibiotics (BSA). Patients were diagnosed and treated for CDI as inpatients and/or outpatients and were divided into 2 groups based on a preprotocol versus postprotocol analysis: the OVP group, comprising patients who received planned monotherapy with oral vancomycin 125 mg every 6 hours for 14 days for a first episode of CDI and subsequently received OVP posttreatment and a no OVP (NOVP) group, comprising patients who received planned monotherapy with oral vancomycin 125 mg every 6 hours for 14 days for a first episode of CDI and subsequently did not receive OVP posttreatment. OVP was defined as vancomycin 125 mg every 12 hours for up to 7 days after BSA discontinuation. The primary endpoint was recurrent CDI (rCDI), defined as symptoms of loose stools/diarrhea with high clinical suspicion for CDI prompting empiric therapy within 60 days of completion of treatment/prophylaxis for the first CDI episode. The incidence of vancomycin-resistant enterococcal (VRE) infection and 60-day mortality were also compared between the 2 groups. Multivariate logistic regression was created from associated variables to identify independent associations with rCDI. A total of 50 patients were included, 21 in the OVP group (42%) and 29 in the NOVP group (58%). The mean patient age was 58 years, and the cohort was 60% male and 86% Caucasian. HSCT was performed in 60% of the patients, and 76% of CDI cases were diagnosed during hospitalization. The rate of rCDI was significantly lower in the OVP group compared with the NOVP group (5% [1 of 21] versus 35% [10 of 29]; P= .016), with no subsequent increase in VRE infection rate (14% [3 of 21] versus 10% [3 of 29]; P = .686). By multivariable logistic regression, rCDI was inversely associated with OVP (odds ratio [OR], .14; 95% confidence interval [CI], .007 to .994; P = .049) and directly associated with outpatient CDI diagnosis (OR, 8.72; 95% CI, 1.816 to 49.158; P = .007). No between-group differences were found in 60-day mortality (10% [2 of 21] for OVP versus 7% [2 of 29] for NOVP; P > 0.999). OVP appears to be safe and effective for secondary prevention of CDI in the HSCT/HM population. Prospective trials are needed to validate the effectiveness of OVP in this vulnerable population to prevent rCDI.
Collapse
Affiliation(s)
- Taylor Morrisette
- Department of Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado; Department of Pharmacy-Infectious Diseases, University of Colorado Hospital, Aurora, Colorado
| | - Amanda G Van Matre
- Department of Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
| | - Matthew A Miller
- Department of Pharmacy-Infectious Diseases, University of Colorado Hospital, Aurora, Colorado
| | - Scott W Mueller
- Department of Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
| | - Valida Bajrovic
- Division of Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado
| | - Maheen Z Abidi
- Division of Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado
| | - Esther Benamu
- Division of Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado
| | - Jeffrey N Kaiser
- Department of Pharmacy-Blood Cancer and Bone Marrow Transplant, University of Colorado Hospital, Aurora, Colorado
| | - Gerard R Barber
- Department of Pharmacy-Infectious Diseases, University of Colorado Hospital, Aurora, Colorado
| | - Stephanie Chase
- Department of Pharmacy-Blood Cancer and Bone Marrow Transplant, University of Colorado Hospital, Aurora, Colorado
| | - Jennifer Tobin
- Department of Pharmacy-Blood Cancer and Bone Marrow Transplant, University of Colorado Hospital, Aurora, Colorado
| | - Douglas N Fish
- Department of Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
| | - Jonathan A Gutman
- Department of Blood Cancer and Bone Marrow Transplant, University of Colorado School of Medicine, Aurora, Colorado.
| |
Collapse
|
22
|
Ganetsky A, Han JH, Hughes ME, Babushok DV, Frey NV, Gill SI, Hexner EO, Loren AW, Luger SM, Mangan JK, Martin ME, Smith J, Freyer CW, Gilmar C, Schuster M, Stadtmauer EA, Porter DL. Oral Vancomycin Prophylaxis Is Highly Effective in Preventing Clostridium difficile Infection in Allogeneic Hematopoietic Cell Transplant Recipients. Clin Infect Dis 2019; 68:2003-2009. [PMID: 30256954 PMCID: PMC6541731 DOI: 10.1093/cid/ciy822] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 09/20/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Clostridium difficile infection (CDI) is a leading cause of infectious complications in allogeneic hematopoietic cell transplant recipients (alloHCT). We sought to evaluate whether prophylactic oral vancomycin reduces the incidence of CDI in alloHCT recipients. METHODS We conducted a retrospective cohort study to examine the effectiveness of CDI prophylaxis with oral vancomycin, as compared to no prophylaxis, in 145 consecutive adult alloHCT recipients at the University of Pennsylvania between April 2015 and November 2016. Patients received oral vancomycin 125 mg twice daily, starting on admission and continuing until discharge. The primary outcome of interest was the association between oral vancomycin prophylaxis and CDI diagnosis. Secondary outcomes included graft-versus-host disease (GVHD) and relapse. RESULTS There were no cases of CDI in patients that received prophylaxis (0/90, 0%), whereas 11/55 (20%) patients who did not receive prophylaxis developed CDI (P < .001). Oral vancomycin prophylaxis was not associated with a higher risk of acute, grades 2-4 GVHD (subhazard ratio [sHR] 1.59; 95% confidence interval [CI] 0.88-2.89; P = .12), acute, grades 3-4 GVHD (sHR 0.65; 95% CI 0.25-1.66; P = .36), or acute, grades 2-4 gastrointestinal GVHD (sHR 1.95; 95% CI 0.93-4.07; P = .08) at day 180 post-transplant. No associations between oral vancomycin and relapse or survival were observed. CONCLUSIONS Prophylaxis with oral vancomycin is highly effective in preventing CDI in alloHCT recipients without increasing the risk of graft-versus-host disease or disease relapse. Further evaluation via a prospective study is warranted.
Collapse
Affiliation(s)
- Alex Ganetsky
- Department of Pharmacy, Hospital of the University of Pennsylvania, Philadelphia
| | - Jennifer H Han
- Division of Infectious Diseases, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
- Department of Healthcare Epidemiology, Infection Prevention and Control, Hospital of the University of Pennsylvania, Philadelphia
| | - Mitchell E Hughes
- Department of Pharmacy, Hospital of the University of Pennsylvania, Philadelphia
| | - Daria V Babushok
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Noelle V Frey
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Saar I Gill
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Elizabeth O Hexner
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Alison W Loren
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Selina M Luger
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - James K Mangan
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Mary Ellen Martin
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Jacqueline Smith
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Craig W Freyer
- Department of Pharmacy, Hospital of the University of Pennsylvania, Philadelphia
| | - Cheryl Gilmar
- Department of Healthcare Epidemiology, Infection Prevention and Control, Hospital of the University of Pennsylvania, Philadelphia
| | - Mindy Schuster
- Division of Infectious Diseases, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - Edward A Stadtmauer
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| | - David L Porter
- Blood and Marrow Transplantation Program, Abramson Cancer Center and the Division of Hematology and Oncology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia
| |
Collapse
|
23
|
Jorgenson MR, Descourouez JL, Yang DY, Leverson GE, Saddler CM, Smith JA, Safdar N, Mandlebrot DA, Redfield RR. Epidemiology, Risk Factors, and Outcomes After Early Posttransplant Clostridiodes difficile Infection in Renal Transplant Recipients. Ann Pharmacother 2019; 53:1020-1025. [PMID: 31007034 DOI: 10.1177/1060028019845003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Modifiable risk-factors associated with Clostridioides difficile infection (CDI) in renal-transplant (RTX) have not been clearly established and peri-transplant risk has not been described. OBJECTIVE Evaluate epidemiology, risk-factors and outcomes after CDI occurring in the first 90 days after RTX (CDI-90).Methods: Observational cohort study/survival analysis of adult RTX recipients from 1/1/2012-12/31/2015. Primary outcome was CDI-90 incidence/risk-factors. Secondary outcome was evaluation of post-90 day transplant outcomes. RESULTS 982 patients met inclusion criteria; 46 with CDI-90 and 936 without (comparator). CDI incidence in the total population was 4.7% at 90 days, 6.3% at 1 year, and 6.4% at 3 years. Incidence of CDI-90 was 5%; time to diagnosis was 19.4±25 days (median 7). Risk-factors for CDI-90 were alemtuzumab induction (Hazard ratio [HR] 1.5, 95% CI(1.1-2.0), p = 0.005) and age at transplant (HR 1.007/year, 95% CI (1.002-1.012), p= 0.007). However, risk-factors for CDI at any time were different; donation-after-circulatory-death (DCD) donor (HR 2.5 95% CI (1.3-4.9), p = 0.008) and female gender (HR 1.6 95% CI (1.0-2.7), p = 0.049). On Kaplan-Meier, CDI-90 appeared to have an impact on patient/graft survival, however when analyzed in a multivariable stepwise Cox proportional hazards model, only age was significantly associated with survival (p = 0.002). CONCLUSION AND RELEVANCE Incidence of CDI-90 is low, mostly occurring in the first post-operative month. Risk-factors vary temporally based on time from transplant. In the early post-op period induction agent and age at transplant are significant, but not after. Associations between CDI and negative graft outcomes appear to be largely driven by age. Future studies validating these risk-factors as well as targeted prophylaxis strategies and their effect on long term graft outcomes and the host microbiome are needed.
Collapse
Affiliation(s)
| | | | - Dou-Yan Yang
- 1 University of Wisconsin Hospital and Clinics, Madison WI, USA.,2 University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - Glen E Leverson
- 1 University of Wisconsin Hospital and Clinics, Madison WI, USA.,2 University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - Christopher M Saddler
- 1 University of Wisconsin Hospital and Clinics, Madison WI, USA.,2 University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - Jeannina A Smith
- 1 University of Wisconsin Hospital and Clinics, Madison WI, USA.,2 University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - Nasia Safdar
- 1 University of Wisconsin Hospital and Clinics, Madison WI, USA.,2 University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - Didier A Mandlebrot
- 1 University of Wisconsin Hospital and Clinics, Madison WI, USA.,2 University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - Robert R Redfield
- 1 University of Wisconsin Hospital and Clinics, Madison WI, USA.,2 University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| |
Collapse
|
24
|
Orenstein R, Patron RL. Clostridioides difficile therapeutics: guidelines and beyond. Ther Adv Infect Dis 2019; 6:2049936119868548. [PMID: 31448117 PMCID: PMC6693025 DOI: 10.1177/2049936119868548] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 07/17/2019] [Indexed: 12/21/2022] Open
Abstract
Clostridioides difficile infection (CDI) has become an increasingly common infection both within and outside of the hospital setting. The management of this infection has been evolving as we learn more about the role of the human microbiota in protecting us from this gastrointestinal opportunist. For many years the focus of treatment had been on eradication of the vegetative, toxin-producing form of the organism, with little regard for its collateral impact on the host's microbiota or risk of recurrence. With the marked increase in C. difficile disease, and, particularly, recurrent disease in the last decade, new guidelines are more focused on targeting and reducing collateral damage to the colonic microbiota. Immune-based strategies that manipulate the microbiota and provide a humoral response to toxins have now become mainstream. Newer strategies are needed to look beyond simply resolving the primary episode but are focused on delayed outcomes such as cure at 90 days, reduced morbidity and mortality, and patient quality of life. The purpose of this review is to familiarize readers with the most recent evidence-based guidelines for C. difficile management, and to describe the role of newer antimicrobials, immunological-, and microbiota-based therapeutics to prevent recurrence and improve the outcomes of people with CDI.
Collapse
Affiliation(s)
- Robert Orenstein
- Division of Infectious Diseases, Mayo Clinic
Arizona, 5777 East Mayo Boulevard, Phoenix, AZ 85054, USA
| | - Roberto L. Patron
- Division of Infectious Diseases, Mayo Clinic
Arizona, Phoenix, AZ, USA
| |
Collapse
|
25
|
Pouch SM, Friedman-Moraco RJ. Prevention and Treatment of Clostridium difficile-Associated Diarrhea in Solid Organ Transplant Recipients. Infect Dis Clin North Am 2018; 32:733-748. [PMID: 30146033 DOI: 10.1016/j.idc.2018.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Clostridium difficile infection is a significant cause of morbidity and mortality in solid organ transplant recipients. Risk factors in this population include frequent hospitalizations, receipt of immunosuppressive agents, and intestinal dysbiosis triggered by several factors, including exposure to broad-spectrum antimicrobials. The incidence and potential for significant adverse outcomes among solid organ transplant recipients with C difficile infection highlight the evolving need for strategic C difficile infection risk factor modification and novel approaches to disease management in this patient population. This review focuses on current concepts related to the prevention and treatment of C difficile infection in solid organ transplant recipients.
Collapse
Affiliation(s)
- Stephanie M Pouch
- Division of Infectious Diseases, Emory University School of Medicine, 101 Woodruff Circle, WMB #2101, Atlanta, GA 30322, USA.
| | - Rachel J Friedman-Moraco
- Division of Infectious Diseases, Emory University School of Medicine, 101 Woodruff Circle, WMB #2101, Atlanta, GA 30322, USA
| |
Collapse
|
26
|
Brown CC, Manis MM, Bohm NM, Curry SR. Oral Vancomycin for Secondary Prophylaxis of Clostridium difficile Infection. Ann Pharmacother 2018; 53:396-401. [PMID: 30450942 DOI: 10.1177/1060028018815170] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE To summarize and critically appraise the evidence regarding oral vancomycin prophylaxis (OVP) to prevent recurrent Clostridium difficile infections (RCDIs), identify potential consequences of this emerging practice, and highlight future directions of study. DATA SOURCES A MEDLINE literature search of English-language publications from 1947 through September 2018 was performed using the search terms vancomycin and C difficile and prophylaxis. Clinical trials were identified on the National Library of Medicine clinical trials registry. STUDY SELECTION AND DATA EXTRACTION All clinical studies (n = 3) assessing oral vancomycin for secondary prophylaxis of C difficile infection (CDI) were evaluated by all authors. Other search results and references in selected publications were used for background and discussion. DATA SYNTHESIS OVP reduced the risk of RCDI in high-risk patients taking systemic antibiotics. Variable dosing regimens and lack of safety data are limitations. OVP may have an adverse impact on the gastrointestinal microbiome, but this was not examined in the clinical studies. Relevance to Patient Care and Clinical Practice: Although current studies are limited by methodological concerns, clinicians can consider vancomycin 125 mg orally once or twice daily in high-risk patients receiving broad-spectrum antibacterial agents. Results of ongoing trials will define the most appropriate regimen and its impact on outcomes, including collateral damage. CONCLUSIONS OVP reduces the risk of RCDIs and should be considered on a case-by-case basis. Caution is warranted before routine use is implemented because the impact on long-term outcomes has not been assessed and the optimal regimen has not been defined.
Collapse
Affiliation(s)
- Chase C Brown
- 1 Medical University of South Carolina, Charleston, SC, USA
| | - Melanie M Manis
- 2 Samford University McWhorter School of Pharmacy, Birmingham, AL, USA
| | - Nicole M Bohm
- 1 Medical University of South Carolina, Charleston, SC, USA.,3 Medical University of South Carolina College of Pharmacy, Charleston, SC, USA
| | - Scott R Curry
- 1 Medical University of South Carolina, Charleston, SC, USA
| |
Collapse
|
27
|
Lin SC, Alonso CD, Moss AC. Fecal microbiota transplantation for recurrent Clostridium difficile infection in patients with solid organ transplants: an institutional experience and review of the literature. Transpl Infect Dis 2018; 20:e12967. [PMID: 30011107 DOI: 10.1111/tid.12967] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 06/19/2018] [Accepted: 07/12/2018] [Indexed: 12/26/2022]
Abstract
Clostridium difficile, an anaerobic gram-positive, spore-forming bacillus, has become the most common cause of nosocomial infectious diarrhea, and is associated with increased mortality in all populations. Patients who have received solid organ transplants (SOT) are at increased risk of Clostridium difficile infection (CDI) and CDI recurrence (rCDI). This may be related to chronic immunosuppression, frequent antibiotic exposure, and increased or prolonged hospitalizations. Increased morbidity and mortality from CDI is well-described in SOT patients. Conventional treatments for index and recurrent CDI include vancomycin and fidaxomicin. Fecal microbiota transplantation has emerged as an effective and safe alternative for treating rCDI in the general population. Reports of its safety in certain immunocompromised populations, such as those with inflammatory bowel disease, appear reassuring, but outcomes among SOT patients are less well known. Here, we summarize the experiences published to date on the treatment of rCDI with FMT in SOT patient, and also describe our detailed FMT protocol and experience in treating a series of SOT patients with rCDI. In addition to reporting the safety and efficacy of our FMT experience, we also discuss the diagnostic challenges and considerations in this population of solid organ transplant recipients.
Collapse
Affiliation(s)
- Steven C Lin
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Carolyn D Alonso
- Division of Infectious Disease, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Alan C Moss
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
28
|
Damman JL, Rodriguez EA, Ali AH, Buness CW, Cox KL, Carey EJ, Lindor KD. Review article: the evidence that vancomycin is a therapeutic option for primary sclerosing cholangitis. Aliment Pharmacol Ther 2018; 47:886-895. [PMID: 29411404 DOI: 10.1111/apt.14540] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 11/06/2017] [Accepted: 01/08/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS PSC is an autoimmune biliary inflammatory disorder that is often associated with inflammatory bowel disease (IBD), with 50%-75% of patients with PSC having coexisting IBD, most commonly ulcerative colitis. Currently, no medical therapies have been shown to improve the disease course or slow its progression. However, ongoing research has resulted in a growing interest in the use of antibiotics for treatment of PSC, of which vancomycin is the most studied. In this review, we summarise the current evidence on the use of vancomycin in PSC and comment on future research areas of interest. METHODS A comprehensive PUBMED and EMBASE literature search for articles on vancomycin, PSC, therapeutic options and microbiome was performed. RESULTS Two randomised clinical trials, three case series and two case reports were included in the study. These include uncontrolled data from at least 98 patients that include promising improvements in biochemistry and imaging. Optimal dosing regimens are unclear. CONCLUSION Vancomycin is one of the most studied antibiotics used in the treatment of PSC with promising results. There is not currently sufficient evidence to support treatment recommendations. Further research is needed to establish if vancomycin is a PSC treatment.
Collapse
Affiliation(s)
- J L Damman
- Pediatrics/Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
| | - E A Rodriguez
- Gastroenterology and Hepatology, Mayo Clinic, Arizona, USA
| | - A H Ali
- Hepatology, Mayo Clinic, Arizona, USA
| | - C W Buness
- National Patient Advocate Foundation, Paradise Valley, AZ, USA
| | - K L Cox
- Pediatric Gastroenterology and Hepatology, Stanford University, Stanford, CA, USA
| | - E J Carey
- Gastroenterology and Hepatology, Mayo Clinic, Arizona, USA
| | - K D Lindor
- Gastroenterology and Hepatology, Arizona State University and Mayo Clinic, Arizona, USA
| |
Collapse
|