Subsequent myocardial infarction

**Definition:** Infarction of any myocardial site, occurring within 4 weeks (28 days) from onset of a previous infarction

**Inclusions:** - extension of myocardial infarction - recurrent myocardial infarction

**Exclusions:** - specified as chronic or with a stated duration of more than 4 weeks (more than 28 days) from onset