Improved early and late continence following robot-assisted radical prostatectomy with concurrent bladder neck fascial sling (RoboSling).

Abstract

To describe a novel RoboSling technique performed at the time of robot-assisted radical prostatectomy (RARP) and its utility for enhancing urinary function recovery postoperatively. The surgical technique involves harvesting a vascularised, fascial flap from the peritoneum on the posterior aspect of the bladder. Following completion of prostatectomy, the autologous flap is tunnelled underneath the bladder and incorporated into the rectourethralis and vertical longitudinal detrusor fibres at the posterior bladder neck with a modified Rocco suture. After urethra-vesical anastomosis is completed, the corners of the flap are hitched up to Cooper's ligament bilaterally with V-Loc sutures, tensioned and secured creating a bladder neck sling. A prospective, longitudinal cohort study was performed of 193 consecutive patients undergoing RARP between December 2016 and September 2019. The first 163 patients underwent standard RARP, and the last 30 patients had the RoboSling technique performed concurrently. Continence outcomes were the primary outcomes assessed using pad number and Expanded Prostate Cancer Composite (EPIC)-urinary domain questionnaire. Operative time (OT), estimated blood loss (EBL), complications and oncological outcomes were secondary outcomes. The two groups were comparable for demographics and clinicopathological variables. At 3 months, zero pad usage (p= 0.005) and continence rates, defined as EPIC score ≥ 85 (p= 0.007), were both higher in the RoboSling group. EBL, complication rate and positive surgical margin rate did not differ between the two groups. Superior zero pad usage was observed at 1 year in the RoboSling group (p= 0.029). The RoboSling technique added on average 16 min to OT. The RoboSling procedure at the time of RARP was associated with earlier return to continence without negatively impacting other postoperative outcomes. This improvement in continence outcomes was maintained long term.