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44 Cards in this Set
- Front
- Back
TIA
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stroke that lasts less than 24 hours
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stroke with cocaine use
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ICH
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clinal course of smooth downhill progression over 6-8 hours
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ICH
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presentation of a left MCA
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aphasia and right hemiplegia
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maximal deficit at onset with improvement over next few hours
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embolic stroke
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types of thrombosis with cortical symptoms vs. no cortical symptoms
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large vessel vs. small vessel thrombosis
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disease associeated with berries
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polycystic kidney disease
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string sign
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long clot in ica that throws emboli to the retinal artery causing temporary blindness
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if a patient falls to the right where is his cerebellar lesion?
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right
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acute bland infarct appearance after 1 day to 1 weeks
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blurring of gray/white due to edema
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edema peaks
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2-4 days after stroke
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subacute phage
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macrophages enter and begin cavitation
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spheroids
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disrupted neuron where the axon has been damaged
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growth of new blood vessels occurs
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1-2 weeks out
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number 1 cause of stroke
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thrombus
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where does atherosclerosis form
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large caliber arteries such as circle of willis vertebral/basilar and extracranial carotid
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vessels most commonly affected by embolism
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medium caliber
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reperfusion is what pressure
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high
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man in a barrel syndrome is caused by
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watershed
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venous drainage all feeds into the
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superior sagital sinus
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can mimic a watershed infarct
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venous infarcts
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pressure of a SDH
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low
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charcot-bouchard aneurism pressure
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high
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most common place for a charcot-bouchard (htn)
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basal ganglia
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2nd most common place for charcot-bouchard
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pons
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Evolution of infarcts
acute subacute chronic |
acute
under 2 days = chromatolysis, eosionophilic neurons 2-4 days=neuronal necrosis, edema 3-5 days=macrophage influx subacute 1 week-1 month more macrophages vascular proliferation chronic=cavitation |
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Most cases of stroke are
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ischemic
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in elderly population the most common cause/type of stroke is
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hypertensive ICH attributtible to amyloid angiopathy
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leading cause of ICH in the young
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cocaine
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most common type ICH
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hypertensive
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biconvex on CT
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EDH
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most common cause of SAH
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trauma
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2 common concerns with aneurysm
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vasospasm and hydrocephalus
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vasospasm occurs what time after stroke
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3 days
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risk factors for aneurysms
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smoking
polycystic kidney disease HTN |
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looks like a bag of worms and can be found in either the cerebrum or the spinal cord
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AVMs
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What percent cure rate for AVM radiosurgery
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80% for 2 years
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DAVF
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abnormal connetion between branches of the internal carotid and the transverse sinus
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DAVFs cause symptoms in the following ways:
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translate arterial pressure to the venous system
Pressure to the cerebral convexity to produce hemorrhage Pulsatile tinnitus |
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venous angioma
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medullary veins are deep in the cerebral hemispheres and cerebellum and spinal cord
get spiderweb appearence |
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cavernous malformation
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popcorn appearence on MRI
overgrowth of endothelial cells |
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thrombolytics must be given in what time frame
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first 3-4 hours
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region around ischemic core that will be kept alive for a time by collateral circulation during stroke
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penumbra
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hemiplegia and aphasia is called
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middle cerebral artery sign
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