Table 1.
Types of myocardial infarction (MI).
| Type | Definition |
|---|---|
| I | Infarction due to ischemia from a primary coronary event such as atherosclerotic plaque rupture and thrombus formation, arterial wall erosion, fissuring, or dissection |
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| II | Infarction secondary to ischemia from either increased oxygen demand or decreased supply (coronary artery spasm, hypotension, hypertension, anemia, and dysrhythmia) |
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| III | Sudden cardiac death/arrest with symptoms suggestive of STEMI or thrombus in a coronary artery found on angiography or autopsy |
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| |
| IVa | Infarction resulting from percutaneous coronary intervention (PCI) |
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| IVb | Infarction from stent thrombosis |
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| V | Infarction due to ischemia related to coronary artery bypass grafting |