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29 July 2016 : Review article  

Multiple Renal Arteries in Kidney Transplantation: A Systematic Review and Meta-Analysis

Marcel ZorgdragerABCDEF, Christina KrikkeDE, Sybrand H. HofkerDE, Henri G.D. LeuveninkDE, Robert A. PolADEF

DOI: 10.12659/AOT.898748

Ann Transplant 2016; 21:469-478

Abstract

Background: The use of grafts with multiple renal arteries (MRA) in renal transplantation has not been clearly established. Material/Methods: A systematic literature review used predefined terms to search PubMed, EMBASE, and the Cochrane Library for all studies since 1985 that included more than 50 MRA grafts. A total of 23 studies, comprising a total of 18,289 patients, were eligible to be included in the meta-analysis. Results: Patients who received an MRA graft compared to single renal artery (SRA) grafts showed significantly higher complication rates (13.8% vs. 11.0%, OR 1.393, p<0.0001), more delayed graft function (10.3% vs. 8.2%, OR 1.333, p=0.022), and had an associated significantly lower 1-year graft survival (93.2% vs. 94.5%, OR 0.819, p=0.034). Both the creatinine level and the warm ischemia time (WIT) were significantly higher in patients with MRA grafts but showed high heterogeneity (I² 98% for WIT and I² 70% for creatinine level). Although MRA grafts were associated with more complications compared to SRA grafts, long-term outcomes were similar for 5-year graft survival (81.4% vs. 81.6%) and 1- and 5-year patient survival (95.4% and 89.6% in MRA group vs. 95.4% and 87.0% in SRA group, respectively). Conclusions: MRA grafts were associated with a higher risk of complication and delayed graft function but had comparable long-term outcomes for graft and patient survival.

Keywords: Kidney Transplantation, meta-analysis, Renal Artery, review

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Annals of Transplantation eISSN: 2329-0358
Annals of Transplantation eISSN: 2329-0358