Table 3.

Universal Definition of Myocardial Infarction

Type	Clinical Situation	Definition
1	Spontaneous	MI related to ischemia from primary coronary event such as plaque rupture, erosion, fissuring, or dissection
2	Demand/supply imbalance	MI related to secondary ischemia due to myocardial oxygen supply/demand imbalance such as spasm, anemia, hypotension, arrhythmia
3	Sudden death	Unexpected cardiac death, perhaps suggestive of MI, but occurring before blood samples can be obtained
4a	PCI	MI associated with PCI procedure
4b	Stent thrombosis	MI associated with stent thrombosis as seen on angiography or autopsy
5	CABG	MI associated with CABG

CABG indicates coronary artery bypass graft surgery; MI, myocardial infarction; PCI, percutaneous coronary intervention.

Adapted with permission from Thygesen et al.⁷