STEMI
Pronunciation: STEH-mee
Also written as: STEMI — ST-Elevation Myocardial Infarction
ST-elevation myocardial infarction requiring emergent reperfusion therapy.
Full Definition
ST-elevation myocardial infarction (STEMI) is an acute coronary syndrome characterized by complete occlusion of a coronary artery resulting in transmural myocardial necrosis and characteristic electrocardiographic changes including ST-segment elevation in contiguous leads. STEMI represents a medical emergency requiring immediate reperfusion therapy, preferably primary percutaneous coronary intervention (PCI) within 90 minutes of first medical contact, or fibrinolytic therapy if PCI is not readily available. Time-sensitive imaging and intervention protocols are critical for optimal patient outcomes.
Usage
Usage note: Always capitalize as STEMI; distinguish from NSTEMI in documentation.
In Context
- "The patient presented with anterior STEMI and underwent emergent primary PCI." — Emergency department report
- "Door-to-balloon time for STEMI patients averaged 75 minutes during the study period." — Quality metrics report