Exam 2 Flashcards
stroke mimics vs stroke symptom patterns
mimics are less likely to follow predictable pattern based on blood vessels
when to initiate ASA for primary prevention
adults 50-59 who have >10% CVD risk, are not at increased risk for bleeding, and have a life expectancy of at least 10 yyears
when should adults be screened for hyperlipidemia
all adults age 40-75
who should be screened for hypertension
all adults >18
criteria for orthostatic changes
reduction of systolic or diastolic BP of at least 20 or 10 mmHg respectively. +/-increase of pulse by 20 bpm. These changes should be seen 3 minutes after a patient who was supine sits or stands up
what is TUG test
timed up and go. Pt sits in a chair and then stands up without using their arms, then walks 10 feet and back and sits down again
normal TUG score
<10 seconds
average duration of Todds paralysis
15 hours
what is a cardiogenic stroke
decrease in cerebral perfusion caused by decreased cardiac output, severe hypotension, or hypoxemia
what is a thrombotic stroke
native clot within the intracranial vasculature
most common major vessel occlusion in stroke
MCA
what percentage of strokes are ischemic
87%
what % of ischemic strokes are small vessel lacunar
25%
what % of ischemic strokes are embolic
57%
describe intracerebral hemorrhage
arterioles/small arteries bleed producing a localized hematoma that can spread along white matter pathways
etiologies of intracerebral hemorrhage
HTN, trauma, coagulopathy, stimulant use, vascular malformations
etiology of SAH
rupture of arterial berry aneurysm at base of brain (90%), or vascular malformations lying near pial surface
what % of SAH presents with sentinel bleed
30%
common sites of large artery atherothrombotic strokes
bifurcation of common carotid, MCA stem
etiology of large artery strokes
atherosclerosis, vasoconstriction, arterial dissection
ssx in large vessel atherothrombotic strokes
often fluctuate due to circle of willis collateral circulation
embolic strokes ssx
abrupt onset with early maximal ssx
multiple sites of embolic stroke indicate what source
cardiac
subcategories of embolic strokes
known cardiac or aortic source, arterial source