Acute coronary syndrome where the ELECTROCARDIOGRAM (ECG) demonstrates the absence of a persistent (lasting more than 20 minutes) ST-segment elevation at least in two adjacent leads and there is no acute blockade of the LEFT BUNDLE BRANCH OF HIS.
Acute coronary syndrome where clinical signs or symptoms of myocardial ischemia are accompanied by persistent (lasting more than 20 minutes) ST-segment elevations in at least two adjacent leads of the ELECTROCARDIOGRAM (ECG).
