Why are ACE inhibitors prescribed after a myocardial infarction?

ACE inhibitors are prescribed after a myocardial infarction primarily to reduce the risk of heart failure and improve survival rates. Following a heart attack, the heart muscle may be weakened, and there is a heightened risk for complications such as heart failure. ACE inhibitors help in this context by inhibiting the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor. This leads to vasodilation, reduced blood pressure, and decreased cardiac workload.

Additionally, ACE inhibitors prevent the harmful remodeling of the heart that can occur after a myocardial infarction. They facilitate improved blood flow to the heart muscle and can help protect against further cardiac events. Overall, the use of ACE inhibitors in this scenario promotes better long-term outcomes for patients.