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B24. Symptoms of posterior-territory stroke

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The posterior circulation supplies the brain stem and thalamus (+ cerebellum and occipital cortex), and as such may produce a larger variety of symptoms than anterior circulation strokes. 20% of strokes are posterior circulation strokes.

Symptoms of insufficient blood supply of the vertebrobasilar artery territory

  • Vertigo
  • Diplopia
  • Dysarthria
  • Contralateral or bilateral hemiparesis/plegia
  • Contralateral or bilateral hemisensory loss
  • Bilateral visual changes/hemianopia
  • Ipsilateral Horner syndrome
  • Altered consciousness
  • LMN facial palsy
  • Dysphagia
  • Ipsilateral limb ataxia
  • Alternating brainstem syndrome