Abstract
Background
Post-prostatectomy urinary incontinence is an adverse event leading to significant distress. Our aim was to evaluate immediate urinary continence (UC) recovery in a single-surgeon prospective randomized comparative study between the traditional robot-assisted laparoscopic radical prostatectomy (TR-RALP) and the Retzius-sparing RALP (RS-RALP), for the treatment of the clinically localized prostate cancer (PCa).
Methods
102 consecutive PCa patients were prospectively randomized to TR-RALP (57) or RS-RALP (45). Postoperative continence was defined as patient-reported absence of leakage or use of 0 pads/day. The immediate continence rate and 95% confidence interval (CI 95%) were calculated for each treatment. Univariable and multivariate logistic regressions were used to assess predictors of immediate continence following RALP. Continence rates from 1 to 6 months were calculated by Kaplan–Meier curves; log-rank test was used for the curve comparison. Two analyses were performed, considering a per-protocol (PP) population regarding all randomized patients that received nerve-sparing RALP and an Intention-To-Treat (ITT) population regarding all randomized patients that received RALP.
Results
In the PP analysis, the rates of immediate continence were 12/40 (30%) (CI 95% 17–47%) for the TR-RALP and 20/39 (51.3%) (CI 95% 35–68%) for the RS-RALP (p = 0.05). In the ITT analysis, the corresponding rates were 12/57 (21%) (CI 95% 11–34%) for the TR-RALP and 23/45 (51%) (CI 95% 36–66%) for the RS-RALP (p = 0.001). Median time to continence was 21 days for the TR-RALP and 1 day for RS-RALP, respectively (p = 0.02). The relative Kaplan–Meier curves regarding continence resulted statistically different when compared with the log rank test (p = 0.02). In the multivariate analysis, lower age and the Retzius-sparing approach were significantly associated to earlier continence recovery.
Conclusions
The Retzius-sparing approach significantly reduces time to continence following RALP. Further studies are required to confirm the reproducibility of our results and investigate the role of the RS-RALP as an additional “protective” factor for postoperative continence in the elderly population.
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Dr Asimakopoulos Anastasios, Dr Topazio Luca, Dr De Angelis Michele, Dr Finazzi Agrò Enrico, Dr Antonio Lugi Pastore, Dr Andrea Fuschi and Dr Annino Filippo have no conflicts of interest or financial ties to disclose.
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Asimakopoulos, A.D., Topazio, L., De Angelis, M. et al. Retzius-sparing versus standard robot-assisted radical prostatectomy: a prospective randomized comparison on immediate continence rates. Surg Endosc 33, 2187–2196 (2019). https://doi.org/10.1007/s00464-018-6499-z
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DOI: https://doi.org/10.1007/s00464-018-6499-z