ST-elevation myocardial infarction
Also written as: STEMI — ST-elevation myocardial infarction
A severe type of heart attack characterized by complete blockage of a coronary artery, identified by specific ECG changes.
Full Definition
ST-elevation myocardial infarction (STEMI) represents the most severe form of acute coronary syndrome, caused by complete occlusion of a major coronary artery. The condition is diagnosed through characteristic electrocardiographic changes showing ST-segment elevation in specific leads corresponding to the affected myocardial territory. STEMI requires immediate reperfusion therapy, either through primary percutaneous coronary intervention (PCI) or thrombolytic therapy, making rapid recognition and documentation critical for patient outcomes.
Usage
Usage note: Hyphenate when used as a compound modifier; capitalize STEMI acronym.
In Context
- "The 12-lead ECG confirmed an acute ST-elevation myocardial infarction involving the anterior wall." — Emergency department assessment
- "Primary PCI was performed within 90 minutes of STEMI diagnosis, achieving TIMI 3 flow." — Interventional cardiology procedure note