Long-term outcome of one-step kidney transplantation and bladder augmentation procedure in pediatric patients

Guidelines for bladder augmentation (BA) in kidney transplant (KT) recipients are not well-defined. In our center, simultaneous BA with KT (BA-KT) is performed. We assessed transplantation outcomes of this unique extensive procedure.

A case-control single center retrospective study. Transplantation outcomes were compared with those of KT recipients who did not need BA.

Compared to 22 patients who underwent KT only, for 9 who underwent BA-KT, surgical complications and the need for revision in the early posttransplantation period were similar; early graft function was better: estimated glomerular filtration rate (eGFR): 96.5±17.1 vs. 79.4±16.6 ml/min at 0-6 months (p=0.02); posttransplantation clean intermittent catheterization was more often needed: by 78% (7/9) vs. 13% (3/22); and asymptomatic bacteriuria was more common: 100% vs. 9% during the first 6 months (P<0.001), 55% vs 9% (p=0.02) and 66.6% vs 9% during the first and second years, respectively (p=0.004). Urinary tract infection (UTI) incidence was also higher: 100% vs. 23% during the first 6 months and 44% vs 9% during the second year posttransplantation. Graft function deteriorated significantly in the BA-KT group by the fifth posttransplantation year: eGFR was 47.7±39.7 ml/min vs 69±21.3ml/min, with only 6/9 (66%) functioning grafts vs. 100% in the KT only group. Causes of graft loss were noncompliance with drug therapy in 2 patients and recurrent UTIs in 2.

Excellent short-term outcome for simultaneous BA-KT is threatened by graft loss due to a high prevalence of UTIs and patient noncompliance with the demanding complex posttransplantation therapy.

Transplantation. 2018 Jan 10 [Epub ahead of print]

R Cleper, D Ben Meir, I Krause, P Livne, E Mor, M Davidovits, A Dagan

Pediatric Nephrology Unit, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel., Pediatric Urology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel., Pediatric Department C, Schneider Children's Medical Center of Israel, Petah Tikva, Israel., Department of Transplantation, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel., Institute of Nephrology, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.