Nerve-sparing technique and urinary control after robot-assisted laparoscopic prostatectomy.

Area of Science:

• Urology
• Surgical Oncology
• Robotic Surgery

Background:

• Robot-assisted laparoscopic prostatectomy (RALP) is a common treatment for prostate cancer.
• Urinary control is a critical factor influencing patient quality of life after RALP.
• Understanding the determinants of urinary control is essential for optimizing surgical techniques and patient counseling.

Purpose of the Study:

• To identify factors influencing urinary control at 4, 12, and 24 months post-RALP.
• To compare urinary function outcomes between bilateral nerve-sparing (BNS) and non-nerve-sparing (NNS) approaches.
• To analyze the impact of pre-operative urinary function and surgical techniques on post-operative urinary control.

Main Methods:

• Prospective collection of patient-reported urinary control data from 602 RALP patients.
• Assessment of urinary control using the EPIC urinary function (UF) score and continence (zero pads/day).
• Multivariate analysis to determine predictors of urinary control at different time points.

Main Results:

• Bilateral nerve-sparing (BNS) demonstrated significantly better UF scores and continence rates at 4 months compared to non-nerve-sparing (NNS).
• At 12 and 24 months, BNS showed significantly higher UF scores, while continence rates did not differ significantly.
• Predictors of improved UF at 4 months included higher pre-operative UF, bladder neck-sparing technique, BNS, and unilateral nerve-sparing.
• Higher pre-operative UF and BNS were associated with better UF at 12 months.
• Higher pre-operative UF, bladder neck-sparing technique, and BNS were associated with better UF at 24 months.

Conclusions:

• Bilateral nerve-sparing (BNS) and bladder neck-sparing techniques are key determinants of improved urinary control after RALP.
• Higher pre-operative urinary function (UF) scores positively correlate with better long-term urinary control.
• These findings can guide surgical decision-making and patient expectations regarding post-prostatectomy urinary function.