Professional
Technical
In the Industry Vocabulary Test
NSTEMI
Also written as: NSTEMI — Non-ST-elevation myocardial infarction
Non-ST-elevation myocardial infarction, a heart attack without characteristic ECG changes.
Full Definition
Non-ST-elevation myocardial infarction (NSTEMI) is a type of acute coronary syndrome where myocardial necrosis occurs without the classic ST-segment elevation on ECG. Diagnosis relies on elevated cardiac biomarkers (troponin) with clinical symptoms or ECG changes such as ST depression or T-wave inversion. NSTEMI management typically involves risk stratification and may include early invasive strategy or conservative medical management depending on patient factors.
Usage
Usage note: Distinguish from STEMI and unstable angina; requires troponin elevation for diagnosis.
In Context
- "Troponin elevation confirmed NSTEMI despite normal initial ECG findings." — Cardiology consultation note
- "The NSTEMI patient was managed conservatively given high surgical risk." — Discharge summary
Also known as
non-ST-elevation MI
subendocardial MI
Contrasted with
STEMI
Don't confuse with
STEMI
unstable angina
troponin leak