Although medication which decreases the risk of angina attacks are frequently prescribed in patients who have sustained a myocardial infarction, the possible influence of medication on long-term survival is not known, with the exception of beta-blocking agents, which have been shown to decrease mortality in clinical trials performed 30 years ago.
Because antianginal drugs also protect the myocardium against ischemia (insufficient oxygen delivery to the heart muscle), there is a possibility that they may improve the prognosis of patients having suffered a heart attack.