title: Evaluation of urodynamic findings before and after mid-urethral tape sling operation for female stress urinary incontinence.
abstract: OBJECTIVE
  To compare the urodynamic findings in female patients with stress urinary incontinence (SUI) before and after a mid-urethral tape sling operation.
  
  
  METHODS
  Multi-channel urodynamic study (Canadian Task Force classification II-3).
  
  
  METHODS
  Department of Urology, Huashan Hospital, Shanghai, China.
  
  
  METHODS
  Women with SUI.
  
  
  METHODS
  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.
  
  
  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.
  
  
  CONCLUSIONS
  These urodynamic findings suggest that patient storage and voiding functions are not substantially affected by the mid-urethral tape sling operation.
authors.affiliation: Department of Urology, Huashan Hospital, Fudan University, Shanghai, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Zheng
authors.forename: Ke
authors.initials: K
authors.lastname: Xu
authors.forename: Yaofei
authors.initials: Y
authors.lastname: Sun
authors.forename: Chuanyu
authors.initials: C
authors.lastname: Sun
authors.forename: Qiang
authors.initials: Q
authors.lastname: Ding
authors.forename: Zujun
authors.initials: Z
authors.lastname: Fang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008875:Middle Aged; D011184:Postoperative Period; D019919:Prosthesis Implantation; D053825:Suburethral Slings; D016896:Treatment Outcome; D014521:Urethra / Q000503:physiopathology* / Q000601:surgery; D014550:Urinary Incontinence, Stress / Q000503:physiopathology* / Q000601:surgery; D014563:Urodynamics / Q000502:physiology*
keywords: Genuine stress incontinence; TVT; TVT-O; Tension-free vaginal tape; Urodynamics