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circle of willis def
circle of willis deficit
| Question | Answer |
|---|---|
| contralateral hemiparesis ( low extremities), medial lemniscus ( dec. contralateral proprioception), ipsilateral paralysis of hypoglossal nerve | anterior spinal artery ( medial medullary syndrome) |
| contralateral loss of pain and temperature | PICA |
| Ipsilateral dysphagia, hoarseness, dec. gag reflex | PICA |
| wallenberg's syndrome | PICA |
| lateral medullary syndrome | PICA |
| ipsilateral facial paralysis, ipsilateral cochlear nucleus, vestibular nystagmus | AICA |
| lateral inferior pontine syndrom | AICA |
| contralateral hemianopia with macular sparing, occipital cortex | posterior cerebral artery |
| contralateral face and arm paralysis and sensory loss, aphasia, left-side neglect | Middle cerebral artery |
| leg-foot area of motor and sensory cortices | anterior cerebral artery |
| circle of willis aneurysm, visual field defects | anterior communicating artery |
| common area of aneurysm, CN III palsy | posterior communicating |
| internal capsule, caudate, putamen, globus pallidus, "arteries of stroke" infact of the posterior limb of the internal capsule causes pure motor hemiparesis | lateral striate |
| anterior cerebral/middle cerebral, damage in severe hypotension | watershed zones |
| upper leg/upper arm weakness, defects in higher-order visual processing | watershed zones |
| locked-in syndrome CN III is typically intact | basilar artery |
| in general, stroke of anterior circle | general sensory and motor dysfunction, aphsia |
| in general, stroke of posterior circle | cranial nerve deficits ( vertigo, visual deficits), coma, cerebellar deficits, dominant hemisphere ( ataxia), nondominant ( neglect) |