The impact of catheter removal time on urinary continence and overactive bladder symptoms after robot-assisted radical prostatectomy: a retrospective analysis of consecutive 432 cases from a single institution.

Background: After radical prostatectomy, the optimal length of postoperative catheterization time remains to be determined. This study investigates the impact of catheter removal time on urinary continence and overactive bladder (OAB) symptoms after robot-assisted radical prostatectomy (RARP). Methods: Four hundred and thirty-two consecutive patients underwent RARP by a single surgeon between Nov 2020 and Oct 2021. Time to catheter removal was categorized into 7, 10, and ≥14 days. Continence was defined as no more than 1 pad used or no more than 20 g of urine leakage per 24 hours. The patients' continence rates and overactive bladder symptom score (OABSS) were assessed at 48 hours, 1 week, 4, 12, and 24 weeks after catheter removal. Results: Overall, continence rates were 37.3% 48 hours after catheter removal, 54.4% 1 week, 77.5% 4 weeks, 92.1% 12 weeks, and 97.9% 24 weeks after catheter removal. The median time to regain continence was 1 week. At 4 weeks after catheter removal, the continence rate in the ≥14 days group (70.5%) was significantly lower than the 7 days group (86.3%) and 10 days group (83.0%) (P=0.001). In a univariate Cox regression analysis, the presence of diabetes, higher pre-operative OABSS, and a catheterization time of 10 days were associated with worse continence recovery. The mean OABSS of patients in the continent group were significantly lower than the incontinent group at 48 hours, 4, 12 and 24 weeks after catheter removal. At 24 weeks after catheter removal, the mean OABSS in the 7 days group was significantly lower than in other groups. Conclusions: Early catheter removal (7 days) was associated with better continence results and lower OABSS at 4 and 24 weeks after catheter removal respectively.