title: Effect of transurethral resection of prostate on prostatic resistive index.
abstract: BACKGROUND
  In the present study, we evaluated the effect of transurethral resection of the prostate (TUR-P) on prostatic resistive index (RI) in patients with benign prostatic hyperplasia(BPH).
  
  
  METHODS
  Forty BPH patients who were candidates for prostatectomy were prospectively included in the study. Prostatic RI was measured using power Doppler imaging (PDI) before TUR-P. In the postoperative follow-up, all patients were reevaluated with PDI, International Prostate Symptom Score (IPSS) and uroflowmetry.
  
  
  RESULTS
  Mean age, IPSS and maximal urine flow rate (Q(max)) of the patients was 65.8 +/- 7.6 years, 24.6 +/- 7.1 and 7.7 +/- 3.8 ml/s, respectively. The mean prostatic RI of the patients before TUR-P was 0.79 +/- 0.02. Prostatic RI positively correlated with total prostate volume and IPSS (r = 0.57, p = 0.0001, and r = 0.42, p = 0.008, respectively) and negatively correlated with Q(max) (r = -0.37, p = 0.029) prior to treatment. After TUR-P, mean IPSS and prostatic RI significantly decreased (6.5 +/- 4.3 and 0.68 +/- 0.03, respectively; p < 0.05), whereas mean Q(max) was increased (15.7 +/- 5.7, p < 0.05).
  
  
  CONCLUSIONS
  Our data demonstrated that prostatic RI of the patients with BPH significantly decreased after TUR-P. We believe that prostatic RI could be a useful parameter for the follow-up of patients who underwent TUR-P.
authors.affiliation: Department of Urology, Numune Education and Research Hospital, Ankara, Turkey. cuneytozden @ hotmail.com
authors.forename: Cuneyt
authors.initials: C
authors.lastname: Ozden
authors.forename: Isa
authors.initials: I
authors.lastname: Gunay
authors.forename: Tagmac
authors.initials: T
authors.lastname: Deren
authors.forename: Suleyman
authors.initials: S
authors.lastname: Bulut
authors.forename: Ozdem Levent
authors.initials: OL
authors.lastname: Ozdal
authors.forename: Suha
authors.initials: S
authors.lastname: Koparal
authors.forename: Ali
authors.initials: A
authors.lastname: Memis
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011467:Prostate / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D011470:Prostatic Hyperplasia / Q000000981:diagnostic imaging / Q000601:surgery*; D012212:Rheology; D020728:Transurethral Resection of Prostate / Q000379:methods*; D018608:Ultrasonography, Doppler / Q000379:methods; D014572:Urology / Q000379:methods