Chang Ki Lee1, Young Eun Yoon1, Kyung Hwa Choi1, Seung Choul Yang1, Joong Shik Lee2, Dong Jin Joo3, Kyu Ha Huh3, Yu Seun Kim3, Woong Kyu Han1. 1. Department of Urology, Urological Science Institute, Yonsei University Health System, Seoul, Korea. 2. Department of Urology, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea. 3. Department of Surgery, The Research Institute for Transplantation, Yonsei University Health System, Seoul, Korea.
Abstract
PURPOSE: We propose an equation that predicts graft function after kidney transplantation by using donated kidney volume and recipient body surface area (BSA). MATERIALS AND METHODS: Included were 261 cases of living kidney transplantation between 2007 and 2009. Preoperative computed tomography scans were performed and the donated kidney volume was measured by use of a three-dimensional reconstruction program (Ripidia). The estimated glomerular filtration rate (eGFR) was calculated by using the modification of diet in renal disease formula. Donated kidney volume, preoperative renal function, and demographic factors of both donors and recipients were evaluated as predictors. RESULTS: The mean ages of the donors and recipients were 40.8 and 41.6 years, respectively. The mean donated kidney volume and donated kidney volume/recipient BSA ratio were 153.4 mL and 96.9 mL/m(2), respectively. Mean preoperative and postoperative 12-month eGFR of recipients were 7.1 and 59.7 mL/min, respectively, and the mean preoperative eGFR of donors was 92.2 mL/min. Donated kidney volume/recipient BSA ratio, donor age, and recipient gender were the significant predictors of eGFR level (p<0.001) and eGFR<45 mL/min at postoperative 12 months (p=0.005, p<0.001, and p=0.006). From the multiple linear regression equation and predicted probability from logistic regression, we could calculate the equation for the ratio of living donor kidney volume to recipient BSA on graft function. CONCLUSIONS: Graft kidney volume/recipient BSA ratio, donor age, and recipient gender were predictors of graft function 12 months after kidney transplantation. Although we are concerned only with the preoperative, this equation model could help physicians to counsel patients concerning their postoperative prognosis and to avoid insufficient volume donations.
PURPOSE: We propose an equation that predicts graft function after kidney transplantation by using donated kidney volume and recipient body surface area (BSA). MATERIALS AND METHODS: Included were 261 cases of living kidney transplantation between 2007 and 2009. Preoperative computed tomography scans were performed and the donated kidney volume was measured by use of a three-dimensional reconstruction program (Ripidia). The estimated glomerular filtration rate (eGFR) was calculated by using the modification of diet in renal disease formula. Donated kidney volume, preoperative renal function, and demographic factors of both donors and recipients were evaluated as predictors. RESULTS: The mean ages of the donors and recipients were 40.8 and 41.6 years, respectively. The mean donated kidney volume and donated kidney volume/recipient BSA ratio were 153.4 mL and 96.9 mL/m(2), respectively. Mean preoperative and postoperative 12-month eGFR of recipients were 7.1 and 59.7 mL/min, respectively, and the mean preoperative eGFR of donors was 92.2 mL/min. Donated kidney volume/recipient BSA ratio, donor age, and recipient gender were the significant predictors of eGFR level (p<0.001) and eGFR<45 mL/min at postoperative 12 months (p=0.005, p<0.001, and p=0.006). From the multiple linear regression equation and predicted probability from logistic regression, we could calculate the equation for the ratio of living donor kidney volume to recipient BSA on graft function. CONCLUSIONS: Graft kidney volume/recipient BSA ratio, donor age, and recipient gender were predictors of graft function 12 months after kidney transplantation. Although we are concerned only with the preoperative, this equation model could help physicians to counsel patients concerning their postoperative prognosis and to avoid insufficient volume donations.
Entities:
Keywords:
Delayed graft function; Kidney; Living donors; Organ size; Transplantation
Authors: John Stoves; Elizabeth J Lindley; Mark C Barnfield; Maria T Burniston; Charles G Newstead Journal: Nephrol Dial Transplant Date: 2002-11 Impact factor: 5.992
Authors: A M Miles; N Sumrani; S John; M S Markell; D A Distant; V Maursky; J H Hong; E A Friedman; B Sommer Journal: Transplantation Date: 1996-03-27 Impact factor: 4.939
Authors: Adam L Summerlin; Mark E Lockhart; Andrew M Strang; Peter N Kolettis; Naomi S Fineberg; J Kevin Smith Journal: AJR Am J Roentgenol Date: 2008-11 Impact factor: 3.959
Authors: E D Poggio; S Hila; B Stephany; R Fatica; V Krishnamurthi; C del Bosque; D Goldfarb; B Herts; V W Dennis; P S Heeger; W Braun Journal: Am J Transplant Date: 2006-03 Impact factor: 8.086