1. In this randomized controlled trial, long-term beta-blockers did not impact all-cause mortality among patients with preserved left ventricular ejection fraction (LVEF) following an acute myocardial infarction (MI) and early angiography. 2. Long-term beta-blocker therapy was not associated with a higher risk of adverse events compared to no beta-blocker. Evidence Rating Level: 1 (Excellent) Study