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  • Title: Naftopidil and propiverine hydrochloride for treatment of male lower urinary tract symptoms suggestive of benign prostatic hyperplasia and concomitant overactive bladder: a prospective randomized controlled study.
    Author: Yokoyama T, Uematsu K, Watanabe T, Sasaki K, Kumon H, Nagai A, Okayama Urological Research Group.
    Journal: Scand J Urol Nephrol; 2009; 43(4):307-14. PubMed ID: 19396723.
    Abstract:
    OBJECTIVE: To assess the efficacy and safety of propiverine hydrochloride (antimuscarinic), naftopidil (alpha(1)-adrenoceptor antagonist) or both in patients with male lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia and concomitant overactive bladder (OAB). MATERIAL AND METHODS: Men aged at least 50 years who had a total International Prostate Symptom Score (IPSS) of 8 or higher and bladder dairy documenting micturition frequency (more than eight micturitions/24 h) and urgency (more than one episode/24 h), with or without urgency urinary incontinence were randomized into three groups: group N, naftopidil (50 mg once daily) only; group P, propiverine hydrochloride (20 mg once daily); and group NP, naftopidil (50 mg once daily) plus propiverine hydrochloride (20 mg once daily) for a 4-week treatment regimen. RESULTS: A total of 66 men, including 20 in group N, 23 in group P and 23 in group NP, were treated and 58 (87.9%) completed the 4 weeks of treatment. IPSS improved significantly in groups N and NP. Urinary frequency improved significantly in groups P and NP. Postvoid residual urine volume increased significantly in groups P and NP. Significant improvements in urgency episodes were noted in each group. One patient in group P required catheterization owing to acute urinary retention and another stopped medication because of difficulty in voiding. CONCLUSION: These results suggest that each treatment showed effectiveness for male LUTS with OAB. However, there are some possibilities of adverse effects with propiverine hydrochloride monotherapy.
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