Related Experiment Video
Updated: Jul 19, 2026
Photoselective Vaporesection of the Prostate via an End-firing Lithium Triborate Crystal Laser
Published on: May 9, 2018
Prognosis of lower urinary tract symptoms and function after robot-assisted radical prostatectomy in patients with
Junya Hata1, Kanako Matsuoka1, Hidenori Akaihata1
1Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan.
Objectives:
To examine the prognosis of lower urinary tract symptoms and function after robot-assisted radical prostatectomy (RARP) in patients with low preoperative bladder contractility.
Methods:
A total of 115 patients who underwent RARP were enrolled and divided into two groups by preoperative urodynamic findings: normal (patients with bladder contractility index [BCI] ≥ 100; n = 70) and low contractility (patients with BCI < 100; n = 45) groups. Lower urinary tract symptoms and function parameters were prospectively evaluated at 1, 3, 6, 9, and 12 months after RARP in both groups.
Results:
International Prostatic Symptom Score voiding scores 1, 3, 6, 9, and 12 months after RARP were significantly higher (p < 0.05), and the maximum flow rate (Qmax) values before and 1, 3, 9, and 12 months after RARP were significantly lower in the low contractility group (p < 0.05). Comparing preoperative and postoperative parameters, IPSS voiding scores in the normal contractility group were significantly improved from 6 months after RARP, whereas those in the low contractility group were almost unchanged. Qmax and the 1-h pad test in both groups temporarily deteriorated 1 month after RARP, whereas voided volume and postvoiding residual volume significantly decreased from 1 to 12 months after RARP.
Conclusions:
This observational study showed that patients with low preoperative bladder contractility might have a weak improvement in voiding symptoms and function after RARP.
