PURPOSE: Uninephrectomy would induce compensatory hypertrophy in the remaining kidney.
We investigated the relationship between changes in renal parenchymal volume (RPV) and renal function after nephrectomy in living kidney donors.
METHODS: From July 2011 and January 2012, 45 kidney donors were enrolled in this study. Magnetic resonance scanning was performed before surgery, 3 and 7 days postoperatively, and RPV was calculated through disc summarize methods. Participants were followed up for 1 year.
RESULTS: The RPV of the remaining kidney was 118.06 ± 23.51 cm3 and then increased by 21.23 % to 143.13 ± 25.52 cm3 at 3 days and by 24.17 % to 146.60 ± 25.86 cm3 at 7 days. Multivariate regression analysis showed that preoperative RPV is positively related to its initial function (p = 0.037); the RPV at 7 days is directly related to its initial, preoperative size (p < 0.001). With respect to change in postoperative RPV, there is bigger gain in size in smaller kidneys (p = 0.005). The kidneys that has ≥20 % increase RPV after 7 days are more likely to show further increase in GFR at 1 year (p = 0.024).
CONCLUSIONS: Uninephrectomy induced immediately increment in RPV of the remaining kidney. Donors with RPV increase of ≥20 % at 1 week have a more favourable renal function adaptation at 1 year.
Written by:
Song T, Fu L, Huang Z, He S, Zhao R, Lin T, Wei Q. Are you the author?
Department of Urology, West China Hospital, Sichuan University, Guoxue Xiang #37, Chengdu, 610041, Sichuan, People's Republic of China.
Reference: Int Urol Nephrol. 2013 Nov 1. Epub ahead of print.
doi: 10.1007/s11255-013-0592-y
PubMed Abstract
PMID: 24178754
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