This review examined three randomized controlled trials and two meta-analyses focusing on patients who had a heart attack. These patients either had preserved heart function or mildly reduced function. The researchers looked at whether taking beta-blockers reduced the risk of death, another heart attack, or heart failure compared to not taking them.
The study included patients treated in modern practice settings involving coronary interventions and standard medical therapy. Results showed no benefit for patients with preserved heart function. For this group, beta-blockers did not lower the risk of the main outcomes studied.
However, patients with mildly reduced heart function saw a 25% reduction in risk when taking beta-blockers. Safety profiles were similar between groups, with no major safety concerns reported. Routine long-term use may not be necessary for everyone with normal heart function, but it remains reasonable for those with slightly reduced function.