Myocardial infarction

myocardial infarction

n. Abbr. MI

Necrosis of a region of the myocardium caused by an interruption in the supply of blood to the heart, usually as a result of occlusion of a coronary artery. Also called cardiac infarction.

---

Myocardial infarction

Commonly known as a heart attack, a myocardial infarction is an episode in which some of the heart's blood supply is severely cut off or restricted, causing the heart muscle to suffer and die from lack of oxygen.

Mentioned in: Angina, Antimyocardial Antibody Test, Aspartate Aminotransferase Test, Heart Attack, Troponins Test, Ventricular Aneurysm

---

myocardial infarction (mīˈ·ō·kärˑ·dē·l in·färkˑ·shn),

n necrosis of cardiac muscle tissue caused by a coronary artery obstruction linked to a spasm, thrombosis, or atherosclerosis. Also called
heart attack.

Myocardial infarction.

---

myocardial infarction Acute necrosis of myocardial tissue; in the early post-MI period, there may be a need to rely on 'soft' data, especially if troponin I or CK-MB have yet to ↑, or there is a loss of sensation to the pain characteristic of MI, as occurs in circa 10% Pts with DM; older ♀ may have normal levels of CK after an MI Risk factors for MI ASHD, ↑ cholesterol, HTN, smoking, DM, low selenium, etc Lab Cardiac enzymes, 'flipped' LD, troponins increase to normal size. Pathology Chronology of myocardial changes Fatal complications of MI Shock, arrhythmias, rupture of ventricular aneurysms or papillary muscle, acute CHF, mural thromboembolism Risks ↑ risk with ↑ TGs, ↑ small LDL particle diameter, ↓ HDL-C