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Review

Efficacy of the combination of an α1-blocker with an anticholinergic agent in the treatment of lower urinary tract symptoms associated with bladder outlet obstruction

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Pages 2429-2433 | Published online: 31 Oct 2005
 

Abstract

The combination of an α1-blocker with an anticholinergic is a new and promising therapeutic approach for bladder outlet obstruction and detrusor overactivity. Both placebo-controlled and comparative studies have demonstrated that the addition of an anticholinergic in the conventional treatment of patients with bladder outlet obstruction is safe, as the likelihood of acute urinary retention is low. Although the pathophysiology of detrusor overactivity is unknown and most probably multifactorial, it is not expected that the voiding phase is influenced by regular doses of anticholinergics, although high doses may affect detrusor contraction. However, safety issues must be studied further. The combination of tamsulosin with propiverine or tolterodine, and of doxasosin with tolterodine has been shown to cause a significant improvement of lower urinary tract symptoms when compared with α1-blocker monotherapy. Indisputably, the existing literature provides clear evidence that the combination of an α1-blocker with an anticholinergic extends physicians ability to manage lower urinary tract symptoms caused by bladder outlet obstruction and overactive bladder syndrome.

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