Criteria for acute, evolving or recent MI | Â |
---|---|
1 | Typical rise and gradual fall (troponin) or more rapid rise and fall (CK-MB) of biochemical markers of myocardial necrosis with at least one of |
 | the following: |
 |    • Ischaemic symptoms |
 |    • Development of pathologic Q-waves on electrocardiography |
 |    • Electrocardiography changes indicative of ischaemia (ST-segment elevation or depression) |
 |    • Coronary artery intervention |
2 | Pathologic findings of an acute MI |
Criteria for established MI | Â |
1 | Development of new pathologic Q-waves on serial electrocardiographs. The patient may or may not remember previous symptoms. |
 | Biochemical markers of myocardial necrosis may have normalized, depending on the length of time that has passed since the infarct developed |
2 | Pathologic findings of a healed or healing MI |