Comparison of the Effect of Laparoscopic and Abdominal Hysterectomy on Lower Urinary Tract Function, Vaginal Length, and Dyspareunia: A Randomized Clinical Trial

Abstract

Objectives: The effect of hysterectomy on vesicourethral and sexual functions remains controversial. The primary objective of this study was to compare the effects of a laparoscopic hysterectomy and a total abdominal hysterectomy on lower urinary tract function. The secondary aims were to compare the two surgeries in terms of postoperative vaginal length and dyspareunia. Materials and Methods: This was a prospective randomized clinical study in which 292 women were assigned to either the laparoscopic hysterectomy (n=146) or total abdominal hysterectomy (n=146) groups. The vaginal length and urodynamic measurements were taken, and the patients were asked to grade the presence and severity of dyspareunia using a visual analog scale 3 weeks before and 12 weeks after the surgery. The relationship between the postoperative vaginal length and the incidence of dyspareunia was evaluated. The urodynamic procedures used included uroflowmetry and voiding cystometry to record the maximum flow rate (Q-max) and to assess the bladder capacity. Results: The preoperative vaginal length was similar between the groups, whereas the postoperative vaginal length was significantly longer in the laparoscopic hysterectomy group. When the 15 patients who developed postoperative dyspareunia were evaluated, no differences in the postoperative vaginal length were seen, but a significant difference in the change in the length of the vagina was found when compared with the other patients. No significant difference was found with regard to pre- and postoperative Q-max, bladder capacity, and change in bladder capacity between the study groups. Conclusions: The change in the length of the vagina was much more remarkable after total abdominal hysterectomy, compared with laparoscopic hysterectomy. It seems that the Q-max and the bladder capacity increase after hysterectomies, regardless of the surgical type. Further prospective randomized comparative studies are warranted to ascertain whether laparoscopic hysterectomies cause less damage to the pelvic floor, compared with abdominal hysterectomies.