Stroke
Martinson Arnan, M.D.; Rebecca Gottesman, M.D., Ph.D.
DEFINITION
- Results from any disruption of blood flow to the brain, prolonged enough to cause cell death and manifesting as focal neurological symptoms.
- Hemorrhagic strokes caused by blood leaking from blood vessels into brain tissue.
- Ischemic strokes caused by an occlusion of a blood vessel.
- Ischemic strokes further subcategorized by mechanism or etiology of the stroke. Subcategories include strokes due to large vessel atherosclerosis, cardio-embolism, and small-vessel disease.
- Other causes of strokes include hypercoagulability, dissection, sickle cell disease, as well as some undetermined causes[Adams, 1993].
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