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Merzkani M, Chang SH, Murad H, Lentine KL, Mattu M, Wang M, Hu V, Wang B, Al-Hosni Y, Alzahabi O, Alomar O, Wellen J, Alhamad T. The association of center volume with transplant outcomes in selected high-risk groups in kidney transplantation. BMC Nephrol 2023; 24:61. [PMID: 36941609 PMCID: PMC10029277 DOI: 10.1186/s12882-023-03099-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 02/27/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND In context of increasing complexity and risk of deceased kidney donors and transplant recipients, the impact of center volume (CV) on the outcomes of high-risk kidney transplants(KT) has not been well determined. METHODS We examined the association of CV and outcomes among 285 U.S. transplant centers from 2000-2016. High-risk KT were defined as recipient age ≥ 70 years, body mass index (BMI) ≥ 35 kg/m2, receiving kidneys from donors with kidney donor profile index(KDPI) ≥ 85%, acute kidney injury(AKI), hepatitisC + . Average annual CV for the specific-high-risk KT categorized in tertiles. Death-Censored-Graft-Loss(DCGL) and death at 3 months, 1, 5, and 10 years were compared between CV tertiles using Cox-regression models. RESULTS Two hundred fifty thousand five hundred seventy-four KT were analyzed. Compared to high CV, recipients with BMI ≥ 35 kg/m2 had higher risk of DCGL in low CV(aHR = 1.11,95%CI = 1.03-1.19) at 10 years; recipients with age ≥ 70 years had higher risk of death in low CV(aHR = 1.07,95%CI = 1.01-14) at 10 years. There was no difference of DCGL or death in low CV for donors with KDPI ≥ 85%, hepatitisC + , or AKI. CONCLUSIONS Recipients of high-risk KT with BMI ≥ 35 kg/m2 have higher risk of DCGL and recipients age ≥ 70 years have higher risk of death in low CV, compared to high CV. Future studies should identify care practices associated with CV that support optimal outcomes after KT.
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Affiliation(s)
- Massini Merzkani
- Division of Nephrology, Washington University School of Medicine, 4523 Clayton Ave. CB 8126, St. Louis, MO, 63110, USA
| | - Su-Hsin Chang
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Haris Murad
- Division of Nephrology, Washington University School of Medicine, 4523 Clayton Ave. CB 8126, St. Louis, MO, 63110, USA
| | - Krista L Lentine
- Center for Abdominal Transplantation, Saint Louis University, St. Louis, MO, USA
| | - Munis Mattu
- Division of Nephrology, Washington University School of Medicine, 4523 Clayton Ave. CB 8126, St. Louis, MO, 63110, USA
| | - Mei Wang
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Vangie Hu
- Brown School of Social Work, Washington University in St. Louis, St. Louis, MO, USA
| | - Bolin Wang
- Brown School of Social Work, Washington University in St. Louis, St. Louis, MO, USA
| | - Yazen Al-Hosni
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Obadah Alzahabi
- Division of Nephrology, Washington University School of Medicine, 4523 Clayton Ave. CB 8126, St. Louis, MO, 63110, USA
| | - Omar Alomar
- Division of Nephrology, Washington University School of Medicine, 4523 Clayton Ave. CB 8126, St. Louis, MO, 63110, USA
| | - Jason Wellen
- Department of Surgery, Washington University in St. Louis, St. Louis, MO, USA
| | - Tarek Alhamad
- Division of Nephrology, Washington University School of Medicine, 4523 Clayton Ave. CB 8126, St. Louis, MO, 63110, USA.
- Transplant Epidemiology Research Collaboration (TERC), Institute of Public Health, Washington University School of Medicine, St. Louis, MO, USA.
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