Type 1: Ischemic myocardial necrosis secondary to plaque rupture (ACS)
Type 2: Ischemic myocardial necrosis not secondary to ACS, but rather supply/demand mismatch, vasospasm, emboli, anemia, hypoperfusion, and/or arrhythmia
Type 3: Sudden cardiac death
Type 4a: PCI related
Type 4b: Stent thrombosis
Type 5: CABG related
References
Thygesen K, Alpert JS, Jaffe AS, et al. Third universal definition of myocardial infarction. J Am Coll Cardiol 2012;60:1581–98