Document Detail


Nitrates for stable angina: a systematic review and meta-analysis of randomized clinical trials.
MedLine Citation:
PMID:  20557963     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
OBJECTIVE: To assess the effect (harms and benefits) of nitrates for stable angina.
METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE and EMBASE. Randomized controlled trials with both parallel and crossover design were included. The following outcome measures were evaluated: number of angina attacks weekly and nitroglycerin consumption, quality of life, total exercise duration, time to onset of angina and time to 1 mm ST depression.
RESULTS: Fifty-one trials with 3595 patients meeting inclusion criteria were analyzed. Both intermittent and continuous regimens of nitrates lengthened exercise duration significantly by 31 and 53 s respectively. The number of angina attacks was significantly reduced by 2.89 episodes weekly for continuous administration and 1.5 episodes weekly for intermittent administration. With intermittent administration, increased dose provided with 21 s more length of exercise duration. With continuous administration, exercise duration was pronged more in low-dose group. Quality of life was not improved by continuous application of GTN patches and was similar between continuous and intermittent groups. In addition, 51.6% patients receiving nitrates complained with headache.
CONCLUSION: Long-term administration of nitrates was beneficial for angina prophylaxis and improved exercise performance but might be ineffective for improving quality of life. With continuous regimen, low-dose nitrates were more effective than high-dose ones for improving exercise performance. By contrast, with intermittent regimen, high-dose nitrates were more effective. In addition, intermittent administration could bring zero-hour effect.
Authors:
Jiafu Wei; Taixiang Wu; Qing Yang; Mao Chen; Juan Ni; Dejia Huang
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Publication Detail:
Type:  Journal Article     Date:  2010-06-16
Journal Detail:
Title:  International journal of cardiology     Volume:  146     ISSN:  1874-1754     ISO Abbreviation:  Int. J. Cardiol.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  4-12     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.
Affiliation:
Department of Cardiovascular Medicine, West China Hospital, Sichuan University, China.
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