CVA Flashcards
what is the most common type of ischemic stroke?
emobolic
what origin is the most common for ischemic strokes?
cardiac
2 causes of embolic stroke
congenital abnormality such as a patent foramen ovale, DVT
common precursor to thrombotic stroke
HTN
3 causes of thrombotic stroke
arteritis, atherosclerosis, hypercholesteremia/hematologic disorders
thrombosis to what arteries causes severe strokes?
vertebral and carotids
what is a lacunar stroke associated with?
chronic HTN, diabetic microvascular disease
size of lacunar infarct
2-3mm
75% of hemorrhagic strokes caused by a bleeding blood vessel occurs in people who have _______.
hypertension
common causes of hemorrhagic stroke
hypertensive bleed, intracranial hemorrhage, in presence of AVM or tumor, ruptured aneurysm
what is the most common type of hemorrhagic stroke?
Anterior communicating artery aneurysm
why is a TIA not considered a real stroke?
because there is no infarction to the cerebral tissue
when are hemorrhagic conversions more common?
large infarcts such as MCA
clinical signs seen with a brain stem stroke
changes in breathing, movement, sensation, eye movement, HR, blood pressure
thalamic pain syndrome symptoms:
involuntary movements
contralateral hemiplegia
paresis of vertical eye movement
common stroke symptoms for ACA infarct (2)
urinary incontinence
akinetic mutism
common stroke symptoms for MCA infarct (3)
homonymous hemianopsia
conjugate gaze impairment
ataxia of contralateral limb
common stroke symptoms for PCA infarct (3)
cranial nerve 3 palsy: ptsosis& impaired pupillary light response
dyslexia but able to write, difficulty with color discrimination
homonoymous hemianopsia
infarction to what artery causes medial medullary syndrome/dejerine syndrome
medullary branch of vertebral artery
symptoms of a medial medullary syndrome
paralysis w/ atrophy of 1/2 of tongue with deviation to paralyzed side
contralateral hemiplegia, impaired tactile and proprioceptive sense contralaterally
occlusion of _____ causes wallenburg syndrome.
PICA/vertebral artery
occlusion of ______ causes lateral inferior pontine syndrome.
anterior inferior cerebellar artery
occlusion of ______ causes lateral inferior pontine syndrome.
anterior inferior cerebellar artery
acute stroke are on bed rest for how many hours?
24-48 hours
