Characterization of a Standardized Postoperative Radiographic and Functional Voiding Trial after 1-Stage Bulbar Ventral Onlay Buccal Mucosal Graft Urethroplasty and the Impact on Stricture Recurrence-Free Survival

Purpose:We sought to characterize a standardized postoperative radiographic and functional voiding trial, and determine its impact on outcomes after substitution urethroplasty.Materials and Methods:This is an observational, monocenter study of men who underwent 1-stage ventral onlay buccal mucosal graft urethroplasty for bulbar urethral stricture between January 2009 and December 2016. Patients were stratified by voiding trial success vs failure, including radiographic (extravasation or residual narrowness) and functional (post-void residual volume greater than 100 ml) failure, 21 days postoperatively. End points were voiding trial failure and recurrence-free survival. Regression models were created to determine risk factors of voiding trial failure and evaluate the impact of voiding trial failure on recurrence.Results:The voiding trial succeeded and failed in 437 (85.2%) and 76 (14.8%), respectively, of 513 men. Of the latter men 54 (71.1%) showed evidence of extravasation and 22 (28.9%) had residual nar...