Document Detail

Efficacy of silodosin for relieving benign prostatic obstruction: prospective pressure flow study.
MedLine Citation:
PMID:  23234615     Owner:  NLM     Status:  MEDLINE    
PURPOSE: We investigated the effect of the new sympathetic α1A-adrenoceptor antagonist silodosin for relieving benign prostatic obstruction by pressure flow study.
MATERIALS AND METHODS: In this open, nonblinded, prospective study we administered 8 mg silodosin daily for 4 weeks in 60 patients with lower urinary tract symptoms associated with benign prostatic enlargement. As a primary outcome measure, we assessed changes in bladder function and benign prostatic obstruction using pressure flow study. As secondary outcome measures, changes in subjective symptoms and quality of life were assessed by the International Prostate Symptom Score. Objective changes in urination status were also assessed by free uroflowmetry in terms of maximum flow rate and post-void residual urine volume.
RESULTS: A total of 57 patients were enrolled for analysis. In the storage phase of the pressure flow study bladder capacity at first desire to void increased significantly with no significant change in maximum cystometric capacity. Of 24 patients 14 (58.3%) with uninhibited detrusor contractions before administration showed apparent improvement in detrusor overactivity after administration, including 6 in whom uninhibited contractions disappeared. In the voiding phase mean detrusor pressure at maximum flow significantly decreased from 72.5 to 51.4 cm H(2)O. The mean bladder outlet obstruction index decreased significantly from 60.6 to 33.8. Obstruction grade assessed by the Schaefer nomogram improved in all except 1 patient. Total symptom and quality of life scores, maximum flow rate and post-void residual urine volume on free uroflowmetry significantly improved.
CONCLUSIONS: Silodosin improved lower urinary tract symptoms by improving bladder storage function and relieving benign prostatic obstruction.
Yoshihisa Matsukawa; Momokazu Gotoh; Tomonori Komatsu; Yasuhito Funahashi; Naoto Sassa; Ryohei Hattori
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  The Journal of urology     Volume:  189     ISSN:  1527-3792     ISO Abbreviation:  J. Urol.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2012-12-13     Completed Date:  2013-02-11     Revised Date:  2013-05-22    
Medline Journal Info:
Nlm Unique ID:  0376374     Medline TA:  J Urol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  S117-21     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2013 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.
Department of Urology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
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MeSH Terms
Adrenergic alpha-1 Receptor Antagonists / therapeutic use*
Aged, 80 and over
Indoles / therapeutic use*
Middle Aged
Prospective Studies
Prostatic Hyperplasia / complications
Urinary Bladder Neck Obstruction / drug therapy*,  etiology,  physiopathology
Reg. No./Substance:
0/Adrenergic alpha-1 Receptor Antagonists; 0/Indoles; CUZ39LUY82/silodosin

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