Effect of Transurethral Resection of Prostate on Prostatic Resistive Index

Abstract

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.