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17 Cards in this Set

  • Front
  • Back
when is the maximal deficit from a stroke experienced?
within a few minutes after the event.
a defect in the ability to produce or understand language
pins and needles?
the preferred diagnostic imaging tool for a suspected stroke patient
CT scan

quick (time is important)

detects hemorrhage well (Fe in blood)

requires little patient cooperation
what type of MRI is used for stroke patients?
T2-weighted MRI
returns a tissue/water signal
easily identified lesions
NOT good for determining acute treatment
good for a post-hoc inspection
why is cerebral angiography risky?
risk of stroke
risk of kidney failure (dye)
symptoms of a stroke?
loss or diminished consciousness
facial weakness
headache (esp. hemorrhagic)
paralysis, sensory loss of one side of body
unilateral diminished coordination
2 types of strokes
ischemic - reduced blood supply

hemorrhagic - bursting of a cerebral vessel
ex. hypertension and aneurisms
2 types of ischemic strokes
focal ischemia - occlusion of a vessel. downstream brain tissue is affected

global ischemia - the whole body isn't getting enough blood but the brain is affected most.
ex. cardiac arrest, pulmonary embolism
floating disaster
stationary disaster
where do thrombi most often occur?
branch points of arteries
which is worse, intracranial or subarachnoid hemorrhage?

hard to reach surgically.
why do hemorrhagic strokes present w/ strong headaches?
pressure on nerve endings in meninges
lacunar stroke?
small vessel is occluded and infarction creates a lacune (cavity) in brain (5-10mm)
why do stroke survivors have cavities in their brain?
macrophages remove necrotic neurons from the infarct.
what are top 3 risk factors for stroke?
1. age
2. hypertension
3. heart disease