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13 Cards in this Set
- Front
- Back
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Anterior Spinal Artery (ie Medial Medullary Syndrome)
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Contralateral hemiparesis (lower extremities)
Medial lemniscus (decreased contralateral proprioception) Ipsilateral paralysis of hypoglossal nerve |
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PICA (ie Lateral Medullary Syndrome, aka Wallenberg's)
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Contralateral loss of pain and temperature
Ipsilateral dysphagia Hoarseness, decreased gag reflex, vertigo, diplopia, nystagmus, vomiting Ipsilateral Horner's Ipsilateral loss of pain and temperature Trigeminal Nucleus (spinal tract and nucleus) Ipsilateral ataxia |
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AICA (lateral inferior pontine syndrome)
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Ipsilateral facial paralysis
Ipsilateral cochlear nucleus Vestibular (nystagmus) Ipsilateral facial pain and temperature Ipsilateral dystaxia (MCP, ICP) |
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Posterior cerebral artery
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Contralateral homonomous hemianopia with macular sparing
Supplies occipital cortex |
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Middle cerebral artery
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Contralateral face and arm paralysis and sensory loss
Aphasia (if dominant lobe) Left-sided neglect |
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Anterior cerebral artery
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Supplies medial surface of the brain
Leg-foot area of motor and sensory cortices |
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Anterior communicating artery
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Most common site of circle of Willis aneurysm
Lesions may cause visual field defects CN II |
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Posterior communicating artery
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Common area of aneurysm
Causes CN III palsy |
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Lateral striate
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Divisions of MCA
Supply internal capsule, caudate, putamen, globus pallidus. "Arteries of Stroke" Infarct of the posterior limb of the internal capsule causes pure motor hemiparesis |
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Watershed zones
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Between anterior/middle cerebral, posterior/middle cerebral arteries
Damage in severe hypotension leads to upper leg/arm weakness, defects in higher-order visual processing |
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Basilar artery
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Infart causes "locked-in syndrome"
CN III is typically intact |
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General stroke of anterior circle
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General sensory and motor dysfunction, aphasia
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General stroke of posterior circle
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Cranial nerve deficits (vertigo, visual deficits), coma, cerebellar deficits (ataxia)
Dominant hemisphere --> ataxia Nondominant hemisphere --> neglect |
