What is the prevalence of vertebrobasilar stroke?

Updated: Aug 09, 2021
  • Author: Vladimir Kaye, MD; Chief Editor: Stephen Kishner, MD, MHA  more...
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The frequency, incidence, and prevalence of the vertebrobasilar syndromes vary, depending on the specific area and syndrome involved. Approximately 80-85% of all strokes are ischemic, and 20% of the lesions producing ischemic strokes occur in the vertebrobasilar system.

Overall, hemorrhage causes 15-20% of strokes. Although most intracerebral hemorrhages occur in the region of the putamen and thalamus, about 7% of all hemorrhagic lesions involve the cerebellum in the area of the dentate nucleus, and approximately 6% of hemorrhagic lesions involve the pons.

In most of the reported series, mortality patients with basilar artery occlusion has been consistently greater than 75-80%. [8] Most survivors of basilar artery occlusion have severe, persisting disability.

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