alexa [Is there a safe cold ischemia time interval for the renal graft?].


Journal of Transplantation Technologies & Research

Author(s): Barba J, Zudaire JJ, Robles JE, Tienza A, Rosell D,

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Abstract OBJECTIVE: It is aimed to characterize the true relationship of the cold ischemia time (CIT) with graft survival and with the principal post-transplantation events. MATERIAL AND METHODS: We analyzed 378 kidney transplants, studying the relationship of the CIT with graft survival using a univariate analysis according to the COX model and seeking the optimum cutoff according to the Kaplan-Meier method and log-rank test. The relationship between CIT and the principal events of the post-transplant was studied using the binary logistic regression. RESULTS: The mean follow-up of all the group was 77.8 months (± 51 SD) and the mean CIT was 14.8 hours (± 5.1 SD). The univariate analysis revealed that the CIT was not related with the graft survival as a continuous variable (OR=1.04; 95\% CI: 0.9-1.08; p>0.05). On establishing the cutoff at 18 hours, we found differences in the actuarial survival. Survival at 5 years was 91\% with CIT < 18 h versus 84\% with CIT >18 h. Each hour of cold ischemia increased risk of delay in the graft function by 10\% (OR=1.1; 95\% CI: 1.05-1.15; p<0.001) and also conditioned a greater incidence of acute rejection (41.5\% vs. 55.3\%; p=0.02) and less time to the first rejection episode (72.6 days±137 vs. 272.2 days±614.8; p=0.023) after 18 hours. The CIT did not seem to be related (p<0.05) with the rest of the post-transplantation events, such as surgical complications or hospital admissions. CONCLUSIONS: In our experience, cold ischemia under 18 hours does not seem to negatively affect graft survival. Copyright © 2011 AEU. Published by Elsevier Espana. All rights reserved. This article was published in Actas Urol Esp and referenced in Journal of Transplantation Technologies & Research

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