Classification of myocardial infarction
| Classification | Mechanism |
| Type 1 | Acute atherothrombotic plaque rupture or erosion. |
| Type 2 | A reduction in myocardial oxygen supply (eg, hypotension, hypoxia, anaemia) or an increase in demand (eg, tachyarrhythmia) without atherothrombosis. |
| Type 3 | Cardiac death prior to biomarker sampling or myocardial infarction detected on autopsy. |
| Type 4a–c | Myocardial infarction associated with percutaneous coronary intervention. |
| Type 5 | Myocardial infarction associated with coronary artery bypass grafting. |