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Similar term(s): haemorrhagic stroke, ischemic stroke, thrombotic stroke, brain attack, cerebrovascular attack, cerebral infarction.
A stroke is the sudden and instant death of brain cells following an interruption of the blood supply to the brain.
Ischemic strokes generally occur when a blood clot blocks one of the blood vessels in the brain resulting in a temporary or permanent loss of oxygen supply to the brain. They are the most common form of stroke, accounting for 80% of strokes.
Haemorrhagic strokes account for 20% of strokes and are caused by the rupture of a blood vessel in the brain, causing bleeding into the brain tissue and depriving some areas of oxygen.
Depending on the area of the brain affected, a stroke can cause the paralysis of the arms, legs and facial muscles, weakness, loss of vision and speech, unconsciousness, or death.
Source: GreenFacts
Source: BBC Heart Disease & Stroke: The
Facts
Español: Apoplejía
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