Effects of Obesity on Postoperative Complications and Graft Survival After Kidney Transplantation

{Objective. The objective of this study was to analyze the effects of obesity on post-operative complications and patient and graft survival after kidney transplantation. Methods. We retrospectively included 506 patients who received a kidney transplant in our center during eleven years. Obesity was defined by a body mass index >= 30 kg/m(2) based on World Health Organization criteria. Using univariate and multivariate analyses, we evaluated the impact of obesity on surgical complications according to the Clavien-Dindo classification up to 30 days after surgery. The impact of obesity on graft and patient survival was assessed using a Cox proportional regression model. Results. Seventy-one patients were obese (14%), and mean follow-up was 63.1 months (59.7-66.5). By multivariable analysis, obesity was associated with delayed graft function (hazard ratio [HR] = 2.60 [1.31-5.02]