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Updated: Aug 24, 2026

Acute Myocardial Infarction in Rats
Published on: February 16, 2011
Angiotensin receptor blockers in acute myocardial infarction
1Department of Cardiology and Cardiovascular Surgery, Hamad Medical Corporation, Doha, Qatar. amaramin@yahoo.com
Insights
Angiotensin-converting enzyme inhibitors benefit high-risk patients post-myocardial infarction. The VALIANT trial compared valsartan, captopril, and combination therapy, offering insights into cardiovascular event risk reduction.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Randomized trials confirm angiotensin-converting enzyme (ACE) inhibitors reduce cardiovascular events post-myocardial infarction (MI).
- Angiotensin receptor blockers (ARBs) offer a potential alternative or adjunct to ACE inhibitors for high-risk MI patients.
Purpose of the Study:
- To evaluate the efficacy of valsartan compared to captopril and their combination in high-risk patients following acute myocardial infarction.
Main Methods:
- The Valsartan in Acute Myocardial Infarction (VALIANT) trial was a randomized, placebo-controlled study.
- It enrolled high-risk patients with left ventricular dysfunction after acute myocardial infarction.
Main Results:
- The study compared outcomes with valsartan monotherapy, captopril monotherapy, and the combination of both agents.
- Results informed the clinical management strategies for post-MI cardiovascular risk reduction.
Conclusions:
- The VALIANT trial provides critical data on the role of ARBs and ACE inhibitors in managing high-risk patients after acute myocardial infarction.
- Findings guide therapeutic decisions for preventing subsequent cardiovascular events.
Abstract:
It has been established from multiple randomised, placebo-controlled trials that angiotensin-converting enzyme inhibitors reduce the risk of death and major non-fatal cardiovascular events after acute myocardial infarction, especially when these agents are used for long-term treatment in high-risk patients. Angiotensin receptor blockers represent a theoretically appealing class of drugs for use in combination with or as alternatives to angiotensin-converting enzyme inhibitors in such patients. The Valsartan in Acute Myocardial Infarction (VALIANT) trial compared the effects of valsartan, captopril and the combination of both in a population of high-risk patients with evidence of left ventricular dysfunction after acute myocardial infarction. This article discusses this important study and its implications for the clinical management of these high-risk patients.
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