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The Effect of Robot-Assisted Laparoscopic Prostatectomy on Nocturia
By R.C. Hutchinson, D.D. Thiel, A.M. Tavlarides, N.N. Diehl and A.S. Parker.
Journal of Endourology, Volume 26, Issue 7, 1 July 2012, Pages 861-865
Background and Purpose:
Investigators have reported that men undergoing radical retropubic prostatectomy (RRP) for prostate cancer (PCa) can experience significant changes in nocturia after surgery. We examined the effect of robot-assisted laparoscopic prostatectomy (RALP) on nocturia symptoms in men with PCa from baseline to 1-year follow-up.
Patients and Methods:
Between August 2006 and August 2010, 116 patients undergoing RALP for clinically localized PCa had baseline and 1-year Expanded Prostate Cancer Index Composite (EPIC) questionnaire data obtained. Patients were divided into three groups with respect to nocturia: N1 (0 or 1 episode per night), N2 (2 episodes per night), and N3 (3 or more episodes per night).
N1 (63 patients) had stable or worsened nocturia with 78% of patients retaining their N1 status, 21% progressed to N2 status, and 2% progressed to N3. N2 (29 patients) were 52% N1, 34% N2, and 14% N3 after surgery. The N3 (24 patients) had 29% improved to N1, 38% improved to N2, and 33% remained N3. EPIC urinary function and incontinence subscale scores were 92.3 and 91.3 preintervention and 85.2 and 76.6, (P=<0.001 for both), respectively, at follow-up. The combination of improved obstructive symptomatology and continence after RALP resulted in no net change in urinary bother.
RALP is associated with improved symptomatology in patients with the greatest level of preinterventional nocturia. Patients with minimal preoperative nocturia may experience worsening of nocturia.