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Some observational studies raised questions about the need for β-blockers in all patients after a first heart attack. Surprisingly, in some clinical settings, a limited mortality reduction was found in those who received β-blockade.Some studies suggest that patients without heart failure may not need post-MI β-blockers. The lack of data from randomized controlled clinical trials has led to clinical uncertainty and conflicting recommendations. Therefore, there are multiple information to revaluate the value of β-blocker therapy after a heart attack in absence of heart failure or left ventricular dysfunction and the time for new trials of an old group of drugs has arrived.
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