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  • Title: Deleterious influence of prolonged warm ischemia in living donor kidney transplantation.
    Author: Hellegering J, Visser J, Kloke HJ, D'Ancona FC, Hoitsma AJ, van der Vliet JA, Warlé MC.
    Journal: Transplant Proc; 2012 Jun; 44(5):1222-6. PubMed ID: 22663989.
    Abstract:
    BACKGROUND: Recent studies investigating early graft function (EGF) after living donor kidney transplantation (LDKT) identified prolonged warm ischemia time (WIT) as a risk factor for the occurrence of poor EGF. The latter is associated with long-term graft loss; therefore the question arises whether prolonged WIT affects long-term outcomes in LDKT. METHODS: Data were collected on 472 consecutive adult LDKTs. Patients were divided according to the total WIT into 3 groups with short (<30 minutes), intermediate (30-45 minutes), or prolonged (>45 minutes) WIT. RESULTS: Of all patients, 193 (40.9%) experienced short, 249 (52.8%) intermediate, and 30 (6.4%) prolonged WIT. Prolonged WIT was a significant risk factor for the occurrence of poor EGF with an adjusted odds ratio of 4.252 (95% confidence interval [CI), 1.914 -9.447). Long-term graft survival was impaired in patients with prolonged WIT, with an adjusted hazard ratio of 3.163 (95% CI, 1.202-8.321). Multivariate analysis revealed determinants of prolonged WIT, including laparoscopic procurement, recipient overweight, right donor kidney, and multiple renal arteries. CONCLUSION: Prolonged WIT impairs long-term graft survival in LDKT. This finding underlines the need to develop strategies to avoid the occurrence of prolonged WIT in LDKT.
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