Effect of transurethral resection of prostate on prostatic resistive index.

Introduction: 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).

Patients And 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.