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An area of necrosis resulting from a sudden insufficiency of arterial or venous blood supply. SYN: infarction (2). [L. in-farcio, pp. -fartus (-ctus, an incorrect form), to stuff into]
- anemic i. an i. in which little or no bleeding into tissue spaces occurs when the blood supply is obstructed. SYN: pale i., white i. (1).
- bland i. an uninfected i..
- bone i. an area of bone tissue that has become necrotic as a result of loss of its arterial blood supply.
- Brewer infarcts dark-red, wedge-shaped areas resembling infarcts, seen on section of a kidney in pyelonephritis.
- hemorrhagic i. an i. red in color from infiltration of blood from collateral vessels into the necrotic area. SYN: hemorrhagic gangrene (1), red i..
- pale i. SYN: anemic i..
- red i. SYN: hemorrhagic i..
- Roesler-Dressler i. myocardial infarction in dumbbell form involving the anterior and posterior left ventricle and the left side of the ventricular septum.
- septic i. an area of necrosis resulting from vascular obstruction by emboli composed of clumps of bacteria or infected material.
- thrombotic i. an i. caused by a thrombus.
- uric acid i. precipitates of uric acid distending renal collecting tubules in the newborn; since there is no necrosis, the term i. is a misnomer.
- white i. 1. SYN: anemic i.. 2. in the placenta, intervillous fibrin with ischemic necrosis of villi.
- Zahn i. a pseudoinfarct of the liver, consisting of an area of congestion with parenchymal atrophy but no necrosis; due to obstruction of a branch of the portal vein.
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in·farct 'in-.färkt, in-' n an area of necrosis in a tissue or organ resulting from obstruction of the local circulation by a thrombus or embolus
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n.
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in·farct (inґfahrkt) [L. infarctus] an area of coagulation necrosis in a tissue due to local ischemia resulting from obstruction of circulation to the area, most commonly by a thrombus or embolus. Called also infarction.Medical dictionary. 2011.