title: Association among the symptoms, quality of life and urodynamic parameters in patients with improved lower urinary tract symptoms following a transurethral resection of the prostate.
abstract: OBJECTIVE
  To investigate the associations of symptoms and the quality of life (QOL) with objective variables in a strictly selected large cohort of subjects with symptomatic benign prostatic obstruction (BPO).
  
  
  METHODS
  A retrospective study was conducted in 557 males with BPO in whom a symptomatic improvement had been achieved by transurethral resection of the prostate (TURP), thus suggesting that their lower urinary tract symptoms were primarily due to BPO. The association between the preoperative International Prostate Symptom Score (IPSS) and QOL score with objective variables including the residual volumes, prostate size and urodynamic parameters was statistically analyzed.
  
  
  RESULTS
  Maximum flow rate (Q(max)) positively and a residual urine volume (PVR) negatively correlated with symptoms and QOL score. Detrusor overactivity (DO) also was weakly, but broadly associated with the symptoms. Degree of detrusor contractility and bladder capacity had a weak association with only some storage symptoms. The degree of bladder outlet obstruction (BOO) positively related to the scores on urgency, straining and total IPSS. Patients' age had positive correlation with the score on nocturia. The prostate volume was only negligibly correlated with either any symptoms or the QOL score.
  
  
  CONCLUSIONS
  Parameters, such as Q(max) or PVR, obtained from the noninvasive urodynamics were most widely correlated with symptoms and QOL. Despite a large group with strict selection of men with LUTS possibly relating to BPO being studied, only weak association between the symptoms or QOL and objective parameters including urodynamics was confirmed.
authors.affiliation: Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. narihito@uro.med.kyushu-u.ac.jp
authors.forename: Narihito
authors.initials: N
authors.lastname: Seki
authors.forename: Takakazu
authors.initials: T
authors.lastname: Yunoki
authors.forename: Toshihisa
authors.initials: T
authors.lastname: Tomoda
authors.forename: Mineo
authors.initials: M
authors.lastname: Takei
authors.forename: Akito
authors.initials: A
authors.lastname: Yamaguchi
authors.forename: Seiji
authors.initials: S
authors.lastname: Naito
mesh_terms: D000368:Aged; D015331:Cohort Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011470:Prostatic Hyperplasia / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D011788:Quality of Life; D012189:Retrospective Studies; D012307:Risk Factors; D012720:Severity of Illness Index; D020728:Transurethral Resection of Prostate; D016896:Treatment Outcome; D001748:Urinary Bladder Neck Obstruction / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery; D053201:Urinary Bladder, Overactive / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery; D014555:Urination Disorders / Q000209:etiology* / Q000503:physiopathology / Q000601:surgery; D014563:Urodynamics