J Korean Soc Transplant.  2015 Dec;29(4):209-215. 10.4285/jkstn.2015.29.4.209.

Impact of Graft Kidney Volume and Weight on Graft Function in Living Donor Kidney Transplantation

Affiliations
  • 1Department of Surgery, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea. dltngudgs@aumc.ac.kr
  • 2Department of Radiology, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea.

Abstract

BACKGROUND
Low functional nephron mass and graft kidney-recipient body size mismatch can lead to poor graft function. To examine the impact of the ratios of the surrogates to recipient body surface area (BSA) and body weight on graft function within 5 years post-transplantation, we measured the graft kidney volume, using computed tomography with 3-dimensional reconstruction before transplantation, and measured the graft kidney weight during surgery in living donor kidney transplantation (LDKT).
METHODS
Between February 2004 and November 2013, 142 LDKT recipients without delayed graft function, acute rejection, or infection within 5 years of transplantation were included. The graft function and its relations with graft kidney volume and its weight were analyzed.
RESULTS
The graft kidney volume/recipient BSA ratio showed correlation with the estimated glomerular filtration rate (eGFR) of recipients after 3 years post-transplantation. We found a difference in the graft function between recipients with a graft kidney volume/recipient BSA ratio of > or =80.4 mL/m2 and those with a ratio of <80.4 mL/m2 (P<0.05). Multivariate analysis showed that the graft kidney volume/recipient BSA ratio, the graft kidney weight/recipient body weight ratio, donor age, donor eGFR, and donor/recipient BSA ratio are independent predictors of graft function at each period of transplantation (P<0.05).
CONCLUSIONS
The graft kidney volume of living donors may predict graft function and during living donor and recipient matching, both the potential volume of the donated kidney and the body size of the recipient should be considered.

Keyword

Kidney transplantation; Graft volume; Graft weight; Graft function

MeSH Terms

Body Size
Body Surface Area
Body Weight
Delayed Graft Function
Glomerular Filtration Rate
Humans
Kidney Transplantation*
Kidney*
Living Donors*
Multivariate Analysis
Nephrons
Tissue Donors
Transplants*
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