infarction /in·farc·tion/ (in-fahrk´shun)
1. the formation of an infarct.
2. infarct.
acute myocardial infarction (AMI) that occurring during the period when circulation to a region of the heart is obstructed and necrosis is occurring.
cardiac infarction myocardial i.
cerebral infarction an ischemic condition of the brain, causing a persistent focal neurologic deficit in the area affected.
mesenteric infarction coagulation necrosis of the intestines due to a decrease in blood flow in the mesenteric vasculature.
migrainous infarction a focal neurologic defect that constituted part of a migrainous aura but that has persisted for a long period and may be permanent.
myocardial infarction (MI) gross necrosis of the myocardium, due to interruption of the blood supply to the area. 
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Myocardial infarction shown in cross-section of heart (ventricles only).
non–Q wave infarction myocardial infarction not characterized by abnormal Q waves.
pulmonary infarction localized necrosis of lung tissue, due to obstruction of the arterial blood supply.
Q wave infarction myocardial infarction characterized by Q waves that are abnormal either in character or number or both.
silent myocardial infarction myocardial infarction occurring without pain or other symptoms; often detected only by electrographic or postmortem examination.
watershed infarction cerebral infarction in a watershed area during a time of prolonged systemic hypotension.
| watershed infarction n. Infarction of the cerebral cortex in an area of blood supply between two major cerebral arteries. |
Watershed Infarction
Infarction of a region that is peripheral to 2 arteries and susceptible to ischaemia. Watershed infarcts are often haemorrhagic, as restoration of the circulation allows blood to flow into damaged capillaries and ‘leak’ into the ischaemic tissue
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