- Ischemia
- : Inadequate blood supply (circulation) to a local area due to blockage of the blood vessels to the area.
* * *Local anemia due to mechanical obstruction (mainly arterial narrowing or disruption) of the blood supply. [G. ischo, to keep back, + haima, blood]- myocardial i. inadequate circulation of blood to the myocardium, usually as a result of coronary artery disease. SEE ALSO: angina pectoris, myocardial infarction.- postural i. the reduced blood pressure and flow induced in a part, e.g., the leg or foot, by raising it above the heart level; used to reduce bleeding during surgical operations on the extremities.- i. retinae diminished blood supply in the retina due to failure of the arterial circulation; it may occur as a result of arterial embolism or spasm; poisoning, as by quinine; or exsanguination from recurring profuse hemorrhages; bilateral transitory or permanent blindness may result.- silent i. myocardial i. without accompanying signs or symptoms of angina pectoris; can be detected by ECG and other lab techniques. SEE ALSO: silent myocardial infarction.
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isch·emia or chiefly Brit isch·ae·mia is-'kē-mē-ə n deficient supply of blood to a body part (as the heart or brain) that is due to obstruction of the inflow of arterial blood (as by the narrowing of arteries by spasm or disease)* * *
is·che·mia (is-keґme-ə) [isch- + emia] deficiency of blood in a part, usually due to functional constriction or actual obstruction of a blood vessel. ischemic adj
Medical dictionary. 2011.