Grade 4 Myocardial Infarction, CTCAE 6.0

**Semantic type:** Finding

**Definition:** Life-threatening consequences; hemodynamically UNstable AND detection of a rise and/or fall of Cardiac troponin values with at least 1 value above the 99th percentile URL AND at least 1 of the following: 1) Symptoms of myocardial ischemia; 2) New ischemic ECG changes; 3) Development of pathological Q waves; 4) Imaging evidence of new loss of viable myocardium or new regional wall motion abnormality in a pattern consistent with an ischemic etiology; 5) Identification of a coronary thrombus by angiography

**Synonyms:** - Grade 4 Myocardial infarction