The length of myocardial infarction recovery varies depending on the size of the infarction, usually ranging from about 7 days to 6 months. Recovery of necrotic myocardium depends on the size of the myocardial infarction and the effectiveness of treatment. Myocardial infarcts of small size have a good prognosis and generally require a shorter recovery time. Larger infarcts take longer to recover. Whether or not you receive prompt treatment also affects the recovery time from a myocardial infarction. After a myocardial infarction, if the blood vessels of the heart are revascularized in a timely manner, the number of necrotic cardiomyocytes is relatively small, and the recovery period may be shorter. If myocardial infarction is not treated in time, the cardiac vessels are not reperfused in time, and are in a state of prolonged ischemia, with serious damage to the cardiomyocytes, the recovery period is prolonged, and may even develop into heart failure. It is recommended to follow up, check and treat under the guidance of physicians to avoid delaying the condition.