Type 1: Caused by acute coronary atherothrombosis, usually precipitated by atherosclerotic plaque disruption (rupture or erosion) and often associated with partial or complete vessel thrombosis.
Type 2: Caused by an imbalance between myocardial oxygen supply and demand unrelated to acute coronary atherothrombosis.
Type 3: Cardiac death, with symptoms of myocardial ischemia and presumed ischemic electrocardiographic changes or ventricular arrhythmia, before blood samples for cardiac biomarkers can be obtained or increases in cardiac biomarkers can be identified and/or in whom MI is identified by autopsy.
Type 4
4a: Peri-PCI MI caused by a procedural complication and detected ≤48 h after PCI.
4b: Post-PCI MI caused by coronary stent or stent scaffold thrombosis.
4c: Post-PCI MI caused by coronary stent restenosis.
Type 5: Peri-CABG MI caused by a procedural complication detected ≤48 h after CABG surgery.