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Transient Ischemic Attack

Transient ischemic attacks, by definition, are focal neurologic abnormalities of sudden onset and brief duration (less than 24 hours). Most TIAs last less than 10 minutes and may be caused by a temporary interruption or reduction of blood flow to a specific part of the brain. The symptoms depend upon the part of the arterial blood system to the brain that is affected. Consciousness remains intact throughout the episode.

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