Preoperatively, 115 POP patients suffered from UI, including 64 cases of SUI (including 48 cases of evident SUI and 16 cases of OSUI), 21 of UUI, and 30 of MUI.
There were no significant differences in recurrence rates between OSUI and evident SUI ( P > 0.05).
Richardson defined OSUI in 1983 and thought that a zigzag and obstruent urethra explained the symptoms of SUI; another noted that bulging of the posterior wall of the vagina pressed against the urethra, contributing to urinary continence. In this study, four patients with OSUI accepted the TVT-O procedure and SUI recurred in three of these patients.
Patients demonstrating urodynamic SUI or OSUI were offered a concomitant anti-incontinence procedure.
Twenty of these women had evidence of OSUI. Sixteen of these patients with OSUI (16/20) had concomitant anti-incontinence procedures and one developed SUI symptoms postoperatively.
After the operation, the obstruction is relieved and the urethra distortion is corrected, reducing the urethral pressure, which could change the OSUI to dominant SUI.
Therefore, POP patients with no SUI may have OSUI, which may appear after the prolapse repair.[sup], Due to the fact that not all prolapse repair would develop SUI, surgeons need to determine whether the patients have risk of SUI after POP repair and perform anti-UI surgery along with POP repair.
The urodynamic examination played an important role in identifying OSUI and LUTO, so it was recommended as a routine examination for pelvic floor patients before operation.