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Eur Urol. 1999 Jan;35(1):45-51.

A multicenter placebo-controlled, double-blind trial of urapidil, an alpha-blocker, on neurogenic bladder dysfunction.

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  • 1Department of Urology, School of Medicine, Chiba University, Japan.

Abstract

OBJECTIVES:

To assess the efficacy of urapidil, an alpha-blocker, on neurogenic bladder dysfunction in a placebo-controlled, double-blind trial.

METHODS:

149 patients were randomly assigned to receive a placebo or 60 mg/day of urapidil for 4 weeks. The evaluation of efficacy included changes in urinary symptom scores and the results of a pressure/flow study.

RESULTS:

There were significant intergroup differences with regard to straining and the sum of urinary symptom scores, with the urapidil group showing marked improvements (p = 0.016 and p = 0.011, respectively). In the urapidil group, the average and maximum flow rates were unchanged, but the residual urine volume decreased significantly (p < 0.001) as compared with the baseline value. The pressure at maximum flow and the minimum urethral resistance decreased significantly (p = 0.040 and p = 0.040, respectively) in the urapidil group, and there was a significant (p = 0.005) intergroup difference with regard to pressure at maximum flow. There was also a significant (p < 0.001) inter-group difference with regard to the overall therapeutic effect. Side effects were noted in 2 patients treated with urapidil and 6 in the placebo group.

CONCLUSION:

Urapidil is effective for the treatment of voiding dysfunction in patients with neurogenic bladder.

PMID:
9933794
DOI:
19818
[PubMed - indexed for MEDLINE]
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