title: Is the short-term outcome of transurethral resection of the prostate affected by preoperative degree of bladder outlet obstruction, status of detrusor contractility or detrusor overactivity?
abstract: OBJECTIVE
  The aim of this study was to investigate whether the preoperative degree of bladder outlet obstruction (BOO), detrusor underactivity (DUA) or detrusor overactivity (DO) affected the short-term outcome of transurethral resection of the prostate (TURP) for patients with lower urinary tract symptoms suggestive of benign prostatic hyperplasia (LUTS/BPH).
  
  
  METHODS
  Ninety-two patients with LUTS/BPH aged 50 years or older who were considered to be appropriate candidates for TURP were included in this study. Pressure-flow study and filling cystometry were performed to determine BOO, DUA and DO before TURP. The efficacy of TURP was determined at 3 months after surgery using the efficacy criteria for treatment of BPH assessed by the International Prostate Symptom Score, QOL index, maximum flow rate and postvoid residual urine volume.
  
  
  RESULTS
  On preoperative urodynamics, 60%, 40% and 48% of patients showed BOO, DUA and DO, respectively. After TURP, 76% showed 'excellent' or 'good' overall efficacy, whereas only 13% fell into the 'poor/worse' category. The efficacy was higher as the preoperative degree of BOO worsened. In contrast, neither DO nor DUA influenced the outcome of TURP. However, the surgery likely provided unfavorable efficacy for patients having DO but not BOO. Only 20% of the patients who had both DO and DUA but did not have BOO achieved efficacy.
  
  
  CONCLUSIONS
  Transurethral resection of the prostate is an effective surgical procedure for treatment of LUTS/BPH, especially for patients with BOO. DUA may not be a contraindication for TURP. The surgical indication should be circumspect for patients who do not have BOO but have DO.
authors.affiliation: Department of Urology, Sapporo Medical University School of Medicine, Sapporo, Japan.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Naoya
authors.initials: N
authors.lastname: Masumori
authors.forename: Naoki
authors.initials: N
authors.lastname: Itoh
authors.forename: Seiji
authors.initials: S
authors.lastname: Furuya
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ogura
authors.forename: Taiji
authors.initials: T
authors.lastname: Tsukamoto
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D008297:Male; D008875:Middle Aged; D011467:Prostate / Q000473:pathology / Q000601:surgery*; D011470:Prostatic Hyperplasia / Q000473:pathology / Q000601:surgery*; D020728:Transurethral Resection of Prostate / Q000379:methods*; D016896:Treatment Outcome; D001748:Urinary Bladder Neck Obstruction / Q000473:pathology* / Q000503:physiopathology / Q000652:urine; D014563:Urodynamics