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Pseudo-Spontaneous Nystagmus in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo

OBJECTIVES: Spontaneous nystagmus, which has been considered a typical sign of acute vestibulopathy, has recently been reported in benign paroxysmal positional vertigo involving the lateral semicircular canals (LC-BPPV) without unilateral vestibulopathy (pseudo-spontaneous nystagmus, PSN), but resea...

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Autores principales: Lee, Hyo-Jeong, Kim, Yong Hyun, Hong, Sung Kwang, Kim, Hyung-Jong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Society of Otorhinolaryngology-Head and Neck Surgery 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3506770/
https://www.ncbi.nlm.nih.gov/pubmed/23205224
http://dx.doi.org/10.3342/ceo.2012.5.4.201
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author Lee, Hyo-Jeong
Kim, Yong Hyun
Hong, Sung Kwang
Kim, Hyung-Jong
author_facet Lee, Hyo-Jeong
Kim, Yong Hyun
Hong, Sung Kwang
Kim, Hyung-Jong
author_sort Lee, Hyo-Jeong
collection PubMed
description OBJECTIVES: Spontaneous nystagmus, which has been considered a typical sign of acute vestibulopathy, has recently been reported in benign paroxysmal positional vertigo involving the lateral semicircular canals (LC-BPPV) without unilateral vestibulopathy (pseudo-spontaneous nystagmus, PSN), but research about its clinical application is still limited. Here we investigate the frequency and characteristics of PSN in LC-BPPV patients, and estimate its prognostic value. METHODS: For 95 patients with LC-BPPV, we examined nystagmus in the sitting position in the clinic with video goggles. Patients were categorized as PSN or non-PSN, according to presence of horizontal nystagmus in the sitting position at diagnosis. The duration of vertiginous symptoms before diagnosis and the duration of treatment were compared between the two groups. The results of video-nystagmography test were reviewed when available. RESULTS: PSN was examined in 16 (16.8%) patients, all of whose symptoms disappeared immediately after successful repositioning therapy. While the duration of symptoms did not differ statistically between groups (P=0.481), the duration of treatment in the PSN group was significantly longer than in the non-PSN group (P<0.001). CONCLUSION: We conclude that the presence of spontaneous nystagmus in the sitting position does not preclude a diagnosis of LC-BPPV without unilateral vestibulopathy. PSN was related to a poor outcome of LC-BPPV in this study.
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spelling pubmed-35067702012-12-01 Pseudo-Spontaneous Nystagmus in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo Lee, Hyo-Jeong Kim, Yong Hyun Hong, Sung Kwang Kim, Hyung-Jong Clin Exp Otorhinolaryngol Original Article OBJECTIVES: Spontaneous nystagmus, which has been considered a typical sign of acute vestibulopathy, has recently been reported in benign paroxysmal positional vertigo involving the lateral semicircular canals (LC-BPPV) without unilateral vestibulopathy (pseudo-spontaneous nystagmus, PSN), but research about its clinical application is still limited. Here we investigate the frequency and characteristics of PSN in LC-BPPV patients, and estimate its prognostic value. METHODS: For 95 patients with LC-BPPV, we examined nystagmus in the sitting position in the clinic with video goggles. Patients were categorized as PSN or non-PSN, according to presence of horizontal nystagmus in the sitting position at diagnosis. The duration of vertiginous symptoms before diagnosis and the duration of treatment were compared between the two groups. The results of video-nystagmography test were reviewed when available. RESULTS: PSN was examined in 16 (16.8%) patients, all of whose symptoms disappeared immediately after successful repositioning therapy. While the duration of symptoms did not differ statistically between groups (P=0.481), the duration of treatment in the PSN group was significantly longer than in the non-PSN group (P<0.001). CONCLUSION: We conclude that the presence of spontaneous nystagmus in the sitting position does not preclude a diagnosis of LC-BPPV without unilateral vestibulopathy. PSN was related to a poor outcome of LC-BPPV in this study. Korean Society of Otorhinolaryngology-Head and Neck Surgery 2012-12 2012-11-13 /pmc/articles/PMC3506770/ /pubmed/23205224 http://dx.doi.org/10.3342/ceo.2012.5.4.201 Text en Copyright © 2012 by Korean Society of Otorhinolaryngology-Head and Neck Surgery. http://creativecommons.org/licenses/by-nc/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Lee, Hyo-Jeong
Kim, Yong Hyun
Hong, Sung Kwang
Kim, Hyung-Jong
Pseudo-Spontaneous Nystagmus in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo
title Pseudo-Spontaneous Nystagmus in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo
title_full Pseudo-Spontaneous Nystagmus in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo
title_fullStr Pseudo-Spontaneous Nystagmus in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo
title_full_unstemmed Pseudo-Spontaneous Nystagmus in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo
title_short Pseudo-Spontaneous Nystagmus in Lateral Semicircular Canal Benign Paroxysmal Positional Vertigo
title_sort pseudo-spontaneous nystagmus in lateral semicircular canal benign paroxysmal positional vertigo
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3506770/
https://www.ncbi.nlm.nih.gov/pubmed/23205224
http://dx.doi.org/10.3342/ceo.2012.5.4.201
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