What Causes Cerebrovascular Accident CVA
Synonym: cerebrovascular insufficiency (abbr .: CVI)
English: cerebrovasvcular insufficiency
Under the term of cerebrovascular insufficiency one understands the inability (insufficiency) of the vessels supplying the brain (vas) to adequately supply the brain (cerebrum) with blood.
In a broader sense, it also subsumes the reversible and irreversible sequelae of vascular-related cerebral (temporary) reduced blood flow, starting from recurrent or chronic cognitive deficits and dizziness up to acute neurological deficits (TIA, PRIND, PRINS, ischemic insult).
The causes are stenosing angiopathies (mostly arteriosclerosis, more rarely vasculitides and other vascular diseases) of the extra- (especially internal carotid artery) and / or intracranial arteries supplying the brain.
In terms of symptoms, cerebrovascular insufficiency can be divided into four stages.
- Stage I.: Asymptomatic stenoses
- Stage II: Temporary ischemia with reversible symptoms
- Stage IIa: TIA (regression after one hour)
- Stage IIb: Minor Stroke (regression within a week)
- Stage III: Progressive ischemia with only partially reversible deficits
- Stage IV: Complete heart attack with permanent failures
see also:Carotid stenosis, cerebral artery sclerosis
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