Wednesday, April 7, 2010 as of 11:14 AM ET
A stroke, or cerebrovascular accident (CVA), is the rapid loss of brain function(s) due to disturbance in the blood supply to the brain.
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Brain cells start to die when the blood flow to one's brain is disrupted, depriving the brain vital nutrients and oxygen.
This interruption may be caused by a clot (ischemic stroke) or a blood vessel that has burst (hemorrhagic stroke).In the United States, stroke is the leading cause of serious long-term disability, and the fourth most common cause of death, reports the American Heart Association .Types Ninety percent of strokes are ischemic. When the arteries leading to the brain are blocked or narrowed, blood flow is halted or reduced, causing an immediate and dire loss of brain cells. Thrombotic and embolic stroke are two common types of ischemic strokes.Thrombotic strokes occur when a blood clot (typically from fatty deposits) develops in one of the two carotid arteries, which bring blood to your brain. An embolic stroke happens when a blood clot develops away from your brain and travels through the bloodstream, eventually getting stuck in the brain arteries. The clot typically de...Scientists have stumbled upon a drug that may prevent heat stroke for people prone to the deadly condition. Ironically, it's the same drug flaunted three years ago a...
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