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CVA (Ischemic (thrombotic (acute local thrombosis (occlusion), thrombosis…
CVA
Ischemic
TIA (transient ischemia w/o infarction)
things not quite right, then fixes itself
thrombotic
thrombosis occurs in vessels w/ atherosclerosis, often affecting cortex
acute local thrombosis
occlusion
chronic narrowing w/ ultimate "closure of vessel"
embolic
most likely to originate form L ventricle or carotid arteries
risk factors:
A fib
recent MI
endocarditis
sudden onset w/ max deficit
small vessel
lacunar infarct
small infarcts in deeper brain tissue
small cavities
may be related to thrombosis or embolism or HTN
Hemorrhagic
spontaneous rupture of cerebral blood vessel
stroke most likely to be fatal
bleeding occurs intracerebral areas or the subarachnoid space
blood irritates meninges & tissue
inflammation, edema, vasospasm in nearby tissues
edema
brain compression
meninges don't like blood, but they can handle CSF
vasospasm decrease blood flow to surrounding area