deficit that has a sudden onset, lasts more than 24 hours, and results from cerebrovascular disease.
A stroke occurs when there is a disruption
of blood flow to a region of the brain.
Dysphasia: difficulty in speaking and putting words into the correTATIONS
A stroke is usually characterized by the sudden onset of focal neurological impairment.
About one-fourth of strokes are hemorrhagic, resulting from hypertensive vascular disease (which causes an intracerebral hemorrhage), a ruptured aneurysm, or an arteriovenous malformation.
Risk factors for stroke include smoking, hypertension, obesity, cardiac disease, hypercholesterolemia, diabetes, and use of birth control pills.
Prevention efforts focus on lifestyle changes that can modify risk factors.
PATHOPHYSIOLOGY