myocardial infarction
Pronunciation: my-oh-KAR-dee-al in-FARK-shun
Death of heart muscle tissue due to inadequate blood supply, commonly known as a heart attack.
Full Definition
Myocardial infarction (MI) is the medical term for what is commonly called a heart attack, occurring when blood flow to a portion of the heart muscle is completely blocked, resulting in tissue death (necrosis). MIs are typically classified as ST-elevation MI (STEMI) or non-ST-elevation MI (NSTEMI) based on electrocardiographic findings, with different treatment protocols and prognoses. In cardiac rehabilitation, MI represents one of the most common qualifying diagnoses for program enrollment. The location, extent, and timing of the MI significantly influence exercise prescription, risk stratification, and expected functional outcomes. Patients typically enter rehabilitation 1-6 weeks post-MI, depending on complications and stability.
Usage
Usage note: Abbreviate as MI only after first use; specify type (STEMI/NSTEMI) and location when known.
In Context
- "The patient suffered an anterior wall myocardial infarction six weeks prior to program enrollment." — Initial assessment documentation
- "Post-myocardial infarction patients require careful monitoring for signs of cardiac remodeling." — Clinical guideline documentation