Effect of Tamsulosin, a Selective alpha1A-adrenoreceptor Antagonist, in Benign Prostatic Hyperplasia.
- Author:
Eun Sik LEE
1
;
Chong Wook LEE
Author Information
1. Seoul National University College of Medicine, Korea.
- Publication Type:Randomized Controlled Trial ; Original Article
- Keywords:
benign prostatic hyperplasia
- MeSH:
Dizziness;
Humans;
Mouth;
Prostatic Hyperplasia*
- From:Korean Journal of Urology
1997;38(2):158-166
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: To evaluate the efficacy and safety of tamsulosin, a selective alpha1Aadrenoreceptor antagonist in the treatment of urinary outflow obstruction associated with benign prostatic hyperplasia (BPH) in Korean patients. PATIENTS AND METHODS: The study was a single-blind and randomized design. Tamsulosin, fixed dose of 0.2 mg was taken once daily for 8 weeks. In control group, terazosin, a non-selective c 1-adrcnoreceptor antagonist was administrated with escalating dose of 1 to 5 mg once daily. The study enrolled 98 patients, and 72 patients were included in the analyses at weeks 4 and 8. RESULTS: Both tamsulosin and terazosin had similar significant improvements in subjective and objective symptoms of urinary outflow obstruction (p<0.05). Systolic and diastolic blood pressures decreased significantly in the terazosin-treated patients (p<0.05). Adverse events, most frequently dry mouth and dizziness, usually mild and transient, were observed significantly more in patients on terazosin (18 patients versus I patients on tamsulosin, p<0.001) and led to discontinuation of therapy in two patients on terazosin. CONCLUSION: Tamsulosin, a selective 1A-adrcnorcccptor antagonist, was effective in urinary outflow obstruction associated with BPH. The efficacy of tamsulosin was similar to terazosin, but had a marked better safety profile.
