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Saturday, February 22, 2014

INFARCTION

Infarcts are areas of ischemic, usually coagulative, necrosis caused by occlusion of arterial supply or less commonly venous drainage.Infarcts are most commonly caused by formation of occlusive arterial thrombi, or embolization of arterial or venous thrombi.Infarcts caused by venous occlusion, or in loose tissues with dual blood supply, are typically hemorrhagic (red) whereas those caused by arterial occlusion in compact tissues are pale (white) in color

An infarct is an area of ischemic necrosis caused by occlusion of either the arterial supply or the venous drainage in a particular tissue. Tissue infarction is a common and extremely important cause of clinical illness. More than half of all deaths in the United States are caused by cardiovascular disease, and most of these are attributable to myocardial or cerebral infarction. Pulmonary infarction is a common complication in several clinical settings, bowel infarction is frequently fatal, and ischemic necrosis of the extremities (gangrene) is a serious problem in the diabetic population.

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