Major world cardiology associations have updated and standardized what defines a heart attack and have added the concept of “myocardial injury.” Myocardial injury is defined as an elevated cardiac troponin. The myocardial injury is considered acute if there is rise and/or fall of troponin values. Acute myocardial infarction is defined as acute myocardial injury with clinical evidence of acute myocardial ischemia and at least one of the following: symptoms of myocardial ischemia; new ischemic electrocardiogram changes; development of pathological Q waves; imaging evidence of new loss of viable myocardium or new regional wall motion abnormality in a pattern consistent with an ischemic etiology; identification of a coronary thrombus by angiography or autopsy. Source: https://academic.oup.com/

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