Definition
TIA (transient ischemic attacks): short transient neurological deficits caused by vascular insufficiency
Horner’s syndrome: miosis (smaller pupil), mydriasis (decreased sweating), ptosis (drooping of eyelids) due to insult to sympathetic chain
Introduction
VBI refers to a cerebrovascular event most likely due to ischemia in the posterior circulation territory. When vertigo in the setting of transient ischemic attacks (TIAs) occurs in an elderly patient with multiple vascular risk factors, VBI should be considered in the differentials. VBI when not treated promptly can turn into a full-blown infarct with devastating consequences.
Pathophysiology
VBI is usually due to ischemia from an atherosclerotic process but embolic phenomena can cause infarction in vertebrobasilar territory in 9–40% of reported cases. The vertebrobasilar bed appears less susceptible than carotid...
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© 2013 Springer-Verlag Berlin Heidelberg
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Son, H.J. (2013). Vertebrobasilar Insufficiency (VBI). In: Kountakis, S.E. (eds) Encyclopedia of Otolaryngology, Head and Neck Surgery. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23499-6_753
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DOI: https://doi.org/10.1007/978-3-642-23499-6_753
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-23498-9
Online ISBN: 978-3-642-23499-6
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