• L García-Covarrubias, C Pliego, L Bermudez, A Cicero, J Cancino, R Bautista, A Guerrero, R Silva, J C Hernández, R Rodriguez, M Cruz, A Ibarra, and R Espinoza.
• Department of Kidney Transplantation, Centro Médico Nacional SXXI, Instituto Mexicano Del Seguro Social, Mexico City, Mexico; Department of Organ Donation and Transplantation, Hospital General de Mexico "Dr. Eduardo Liceaga," Mexico City, Mexico. Electronic address: asfa@live.com.mx.
• Transplant. Proc. 2016 Mar 1; 48 (2): 578-82.

BackgroundThe function of renal transplant grafts can be modified by many factors. In one study of graft weight/weight of the recipient, it was concluded to avoid renal transplantation in patients with kidneys with a low ratio between the graft and recipient weight (<2.5 g/kg).ObjectiveThe objective of this study was to describe the association between renal allograft weight and renal function 1 month after renal transplantation in the Mexican population.Material And MethodsWe studied patients who underwent transplantation from living or cadaveric donors with 1 month of follow-up with a functioning graft. An observational, retrospective, analytic study from January 1, 2014 to November 1, 2014 was conducted. Graft weight, donor weight, recipient weight, age, donor gender, recipient creatinine, and renal function were recorded.ResultsA total of 88 patients were included: 35 women (39.8%) and 53 men (60.2%). Sixty (68%) received kidneys from living donors and 28 (31.8%) from deceased donors. Mean recipient body mass index (BMI) was 24.7 (±2.6). Mean graft weight was 152 g (±33.9). Creatinine at 1 month post-transplantation was 1.6 mg/dL (±2.0). Using a linear regression model cold ischemia time was related to serum creatinine at 1 month post-transplantation (P = .020). Using multivariate analysis, significance was observed with respect to these indexes and recipient renal function. Recipient gender also was related and showed statistical significance (P = .015).ConclusionsRenal graft function depends on many factors including the amount of functional renal mass and nephrons required according to the recipient's weight. The donor kidney weigt (DKW) / receptor body weigt (RBW) index should be considered as selection criteria of donors.Copyright © 2016 Elsevier Inc. All rights reserved.

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