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  • Title: Evaluation of urodynamic findings before and after mid-urethral tape sling operation for female stress urinary incontinence.
    Author: Zheng J, Xu K, Sun Y, Sun C, Ding Q, Fang Z.
    Journal: J Minim Invasive Gynecol; 2013; 20(4):482-6. PubMed ID: 23567094.
    Abstract:
    STUDY OBJECTIVE: To compare the urodynamic findings in female patients with stress urinary incontinence (SUI) before and after a mid-urethral tape sling operation. DESIGN: Multi-channel urodynamic study (Canadian Task Force classification II-3). SETTING: Department of Urology, Huashan Hospital, Shanghai, China. PATIENTS: Women with SUI. INTERVENTIONS: One hundred ten patients underwent tension-free vaginal tape (TVT) surgery from September 2002 to December 2004 and 312 patients underwent tension-free vaginal tape-obturator (TVT-O) surgery from January 2005 to December 2011. The study was performed in all patients before surgery and at 3 and 6 months after surgery. Urine flow rate and residual urine volume were measured before and at 1, 3, and 6 month after surgery. Preoperative and postoperative data were compared to determine the urodynamic changes. MEASUREMENTS AND MAIN RESULTS: Of 422 patients, only 34 were lost to follow-up. The mean (SD) age of the remaining 388 patients was 57.6 (10.8) years, and parity was 1.87 (1.00). Compared with preoperative evaluation, there were significant changes in abdominal leak-point pressure and the urethral pressure profile including the maximal urethral pressure and the maximal urethral closure pressure at both 3 and 6 months postoperatively (p < .001). Insofar as urine flow rate and residual urine volume, statistical differences were observed at 1 month postoperatively but not at 3 and 6 months. CONCLUSION: These urodynamic findings suggest that patient storage and voiding functions are not substantially affected by the mid-urethral tape sling operation.
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