myocardial ischemia

myocardial ischemia,

a condition of insufficient blood flow to the heart muscle via the coronary arteries, often resulting in chest pain (angina pectoris). In diagnostic imaging, thallium-201 or other substances are injected into the blood to reveal areas of myocardial ischemia.

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ischemia [is-ke´me-ah]

deficiency of blood in a part, due to functional constriction or actual obstruction of a blood vessel. adj., adj ische´mic.

myocardial ischemia deficiency of blood supply to the heart muscle.

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myocardial ischemia,

n a loss of oxygen to the heart muscle caused by blockage of the coronary arteries or their branches.

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ischemia

deficiency of blood in a part, due to functional constriction or actual obstruction of a blood vessel.

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cerebral ischemia

brain anoxia.

myocardial ischemia

deficiency of blood supply to the heart muscle, due to obstruction or constriction of the coronary arteries.

renal ischemia

severe or prolonged ischemia causes irreversible renal failure and death from uremia. Called also ischemic nephrosis.

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myocardial ischemia

Hypoxia of myocardium, characterized by ↑ TNF-β, local production of superoxide anions, ↓ coronary vasodilation, and myocardial necrosis; if administered at the time of ischemia, recombinant TNF ↓ circulating superoxide anions, maintains endothelial-dependent coronary relaxation, ↓ myocardial injury mediated by endogenous TNF