✦ LIBER ✦

Persistent positional nystagmus : A Case of Superior Semicircular Canal Benign Paroxysmal Positional Vertigo?

✍ Scribed by Katherine D. Heidenreich; Kevin A. Kerber; Wendy J. Carender; Gregory J. Basura; Steven A. Telian

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 113 KB
Volume: 121
Category: Article
ISSN: 0023-852X
DOI: 10.1002/lary.21848

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✦ Synopsis

Abstract

Involvement of the superior semicircular canal (SSC) in benign paroxysmal positional vertigo (BPPV) is rare. SSC BPPV is distinguished from the more common posterior semicircular canal (PSC) variant by the pattern of nystagmus triggered by the Dix‐Hallpike position: down‐beating torsional nystagmus in SSC BPPV versus up‐beating torsional nystagmus in PSC BPPV. SSC BPPV may be readily treated at the bedside, which is a key component in excluding central causes of down‐beating nystagmus. We present an unusual video case report believed to represent refractory SSC BPPV based on the pattern of nystagmus and the absence of any other central signs.

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