J Am Acad Audiol 2021; 32(01): 035-038
DOI: 10.1055/s-0040-1718894
Research Article

Prevalence of “Reversal Nystagmus” in Benign Paroxysmal Positional Vertigo

1  Department of Otolaryngology, Head and Neck Surgery, Vestibular and Balance Center, Geisinger Medical Center, Danville, Pennsylvania
,
W. James Azeredo
1  Department of Otolaryngology, Head and Neck Surgery, Vestibular and Balance Center, Geisinger Medical Center, Danville, Pennsylvania
,
J. Scott Greene
1  Department of Otolaryngology, Head and Neck Surgery, Vestibular and Balance Center, Geisinger Medical Center, Danville, Pennsylvania
,
Luke Andera
2  Department of Otolaryngology, Head and Neck Surgery, Mayo Clinic, La Crosse, Wisconsin
› Author Affiliations

Abstract

Purpose To investigate the prevalence of reversal nystagmus in individuals with benign paroxysmal positional vertigo (BPPV).

Study Design Prevalence of reversal nystagmus was assessed in 28 subjects with unilateral posterior canal BPPV, canalithiasis type. Six trials of Dix-Hallpike testing were completed for each subject.

Results Reversal nystagmus was present in 129 out of 167 Dix-Hallpike maneuvers that were performed (77.2%). In 19 trials where nystagmus was absent with the dependent position of Dix-Hallpike testing, reversal nystagmus was nonetheless demonstrated in 11 trials (57.9%).

Conclusion Reversal nystagmus is commonly demonstrated in individuals with posterior canal BPPV, canalithiasis type. It is frequently evoked even when there is no nystagmus with the dependent position of Dix-Hallpike testing. Observation of reversal nystagmus may enhance the identification of BPPV during Dix-Hallpike testing.



Publication History

Received: 14 April 2020

Accepted: 02 July 2020

Publication Date:
19 April 2021 (online)

© 2021. American Academy of Audiology. This article is published by Thieme.

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