- myocardial infarction
- death of a segment of heart muscle, which follows interruption of its blood supply (see coronary thrombosis). Myocardial infarction is usually confined to the left ventricle. The patient experiences a ‘heart attack’: sudden severe chest pain, which may spread to the arms and throat. The main danger is that of ventricular fibrillation, which accounts for most of the fatalities. Other arrhythmias are also frequent; ectopic beats in the ventricle are especially important as they predispose to ventricular fibrillation. Other complications include heart failure, rupture of the heart, phlebothrombosis, pulmonary embolism, pericarditis, shock, mitral regurgitation, and perforation of the septum between the ventricles.The best results from the management of patients with myocardial infarction follow mobile and hospital-based coronary care with facilities for the early detection, prevention, and treatment of arrhythmias and cardiac arrest. Blockage of a major coronary artery is detected by elevation of the S–T segment on the electrocardiogram (STEMI or S–T elevation myocardial infarction) and is relieved by the intravenous infusion of a drug to dissolve thrombus (thrombolysis) or by emergency coronary angioplasty. Most survivors of myocardial infarction are able to return to a full and active life, including those who have been successfully resuscitated from cardiac arrest. Lesser degrees of coronary obstruction may not be seen on the electrocardiogram but are revealed by the detection of raised troponin levels in the blood (NSTEMI or non-S–T elevation myocardial infarction). Treatment is with antiplatelet drugs and early percutaneous coronary intervention.
The new mediacal dictionary. 2014.
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myocardial infarction — n heart attack * * * death of a segment of heart muscle, which follows interruption of its blood supply (see coronary thrombosis). Myocardial infarction is usually confined to the left ventricle. The patient experiences a heart attack : sudden… … Medical dictionary
myocardial infarction — n. HEART ATTACK … English World dictionary
Myocardial infarction — Heart attack redirects here. For other uses, see Heart attack (disambiguation). Myocardial infarction Classification and external resources Diagram of a myocardial infarction (2) of the tip of the anterior wall of the heart (an apical infarct)… … Wikipedia
myocardial infarction — noun destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle (Freq. 1) • Syn: ↑myocardial infarct, ↑MI • Hypernyms: ↑infarct, ↑infarction • Part Holonyms: ↑ … Useful english dictionary
myocardial infarction — Pathol. See heart attack. Also, myocardial infarct. Abbr.: MI * * * ▪ pathology death of a section of the heart muscle, caused by an interruption of blood flow to the area. See heart attack. * * * … Universalium
myocardial infarction — noun Necrosis of heart muscle caused by an interruption to the supply of blood to the heart, often as a result of coronary thrombosis. Syn: cardiac infarction, heart attack … Wiktionary
myocardial infarction — noun Date: 1940 heart attack … New Collegiate Dictionary
myocardial infarction — obstruction of the heart muscle … English contemporary dictionary
myocardial infarction — myocar′dial infarc′tion (or in′farct) n. pat heart attack Abbr.: MI … From formal English to slang
Myocardial infarction management — Main article: Myocardial infarction Myocardial infarction management involves salvaging as much myocardium as possible and to prevent further complications, thus the phrase time is muscle . Oxygen, aspirin, and nitroglycerin are usually… … Wikipedia