title: Long-term follow up and predictive factors for successful outcome of transurethral incision of the bladder neck in women with detrusor underactivity.
abstract: OBJECTIVE
  Detrusor underactivity (DU) is a common urologic problem. Our previous study revealed the transurethral incision of the bladder neck (TUI-BN) improves short-term voiding efficiency (VE) in female patients with DU. This study focused on the long-term outcomes of TUI-BN and identified the predictive factors of satisfactory outcomes.
  
  
  METHODS
  A total 50 women with DU for whom medical treatment failed underwent TUI-BN. The urodynamic parameters at baseline and follow-up visits were analyzed. Patients with VEs >50% were considered to have satisfactory outcomes. Baseline urodynamic parameters were analyzed as factors predictive of outcomes.
  
  
  RESULTS
  After a mean follow up of 61.8 months, 26 of 50 patients had satisfactory outcomes. The mean VE, maximum flow rate, voided volume, detrusor pressure, and postvoid residual volume significantly improved after TUI-BN. A higher intravesical pressure [Pves, odds ratio (OR) = 1.023, p = 0.013] and smaller first sensation of bladder filling (OR = 0.990, p = 0.020) at baseline were predictive factors for satisfactory outcomes. The multivariate analysis revealed that only baseline Pves was a significant predictor of satisfactory outcomes (OR = 1.024, p = 0.038). The receiver operating characteristic curve analysis of baseline Pves showed that the area under the curve was 0.767 (95% confidence interval = 0.624-0.876). The optimal cutoff value of Pves for a satisfactory outcome was 45 cmH2O, which had a specificity of 78.26% and acceptable sensitivity of 73.08%.
  
  
  CONCLUSIONS
  TUI-BN improved VE in women with DU over the long term. A higher Pves compared to a lower Pves was predictive of satisfactory surgical outcomes.
authors.affiliation: Department of Urology, Buddhist Tzu Chi General Hospital and Tzu Chi University, Hualien, Taiwan.
authors.forename: Jia-Fong
authors.initials: JF
authors.lastname: Jhang
authors.affiliation: Department of Urology, Buddhist Tzu Chi General Hospital and Tzu Chi University, Hualien, Taiwan.
authors.forename: Yuan-Hong
authors.initials: YH
authors.lastname: Jiang
authors.affiliation: Department of Urology, Buddhist Tzu Chi General Hospital and Tzu Chi University, Hualien, Taiwan.
authors.forename: Cheng-Ling
authors.initials: CL
authors.lastname: Lee
authors.affiliation: Department of Urology, Buddhist Tzu Chi General Hospital and Tzu Chi University, Hualien, Taiwan. Electronic address: alur1984@tzuchi.com.tw.
authors.forename: Hann-Chorng
authors.initials: HC
authors.lastname: Kuo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016015:Logistic Models; D008875:Middle Aged; D015999:Multivariate Analysis; D017060:Patient Satisfaction; D012189:Retrospective Studies; D013624:Taiwan; D016896:Treatment Outcome; D014521:Urethra / Q000503:physiopathology*; D001743:Urinary Bladder / Q000601:surgery*; D016055:Urinary Retention / Q000601:surgery*; D014563:Urodynamics; D055815:Young Adult
keywords: intravesical pressure; urinary retention; video-urodynamic study; voiding efficiency