Lack of blood to the brain, resulting in the sudden loss of speech, language, or the ability to move a body part and, if severe enough, death Also known as stroke
Also known as a stroke, a CVA is a rupture or blockage of blood vessels in the cerebrum which disrupts or prevents blood flow to the brain This may produce symptoms such as loss of sensations, motor functions, speech disturbance, visual difficulty, and intellectual or emotional disorders
stroke; a CVA occurs when an obstruction in one of the blood vessels in the brain limit, or completely stops, the blood flow to different parts of the brain
Where discharge or other clinical documentation recorded at the time of, or immediately following, an episode of definite loss of limb or cognitive function and which, in the opinion of the attending clinician, was the direct result of a stroke Where post-event investigations show that such an event was not a stroke, the latter verdict is considered dominant
or cerebrovascular accident (CVA) Sudden impairment of brain function due to hypoxia, which may cause death of brain tissue. Hypertension, atherosclerosis, smoking, high cholesterol, diabetes, old age, atrial fibrillation, and genetic defects are risk factors. Strokes due to thrombosis (the most common cause), embolism, or arterial spasm, which cause ischemia (reduced blood supply), must be distinguished from those due to hemorrhage (bleeding), which are usually severe and often fatal. Depending on its site in the brain, a stroke's effects may include aphasia, ataxia, local paralysis, and/or disorders of one or more senses. A massive stroke can produce one-sided paralysis, inability to speak, coma, or death within hours or days. Anticoagulants can arrest strokes caused by clots but worsen those caused by bleeding. If the cause is closure of the major artery to the brain, surgery may clear or bypass the obstruction. Rehabilitation and speech therapy should begin within two days to retain and restore as much function as possible, since survivors may live many more years. Transient ischemic attacks ("mini strokes"), with short-term loss of function, result from blockage of blood flow to small areas. They tend to recur and may worsen, leading to multi-infarct dementia or stroke
A symptom complex resulting from cerebral hemorrhage or from embolism or thrombosis of the cerebral vessels, characterised by alterations in consciousness, seizures, and development of focal neurologic deficits (stroke)