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Simulation Study of BPPV Fatigability

To analyze the mechanism and clinical significance of Benign paroxysmal positional vertigo (BPPV) fatigability and discuss how to eliminate BPPV fatigability. A physical simulation model of BPPV was developed to observe the effect of the Dix-Hallpike test on otolith location and explore strategies t...

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Autores principales: Yang, Xiaokai, Gao, Lidan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9121120/
https://www.ncbi.nlm.nih.gov/pubmed/35599733
http://dx.doi.org/10.3389/fneur.2022.874699
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author Yang, Xiaokai
Gao, Lidan
author_facet Yang, Xiaokai
Gao, Lidan
author_sort Yang, Xiaokai
collection PubMed
description To analyze the mechanism and clinical significance of Benign paroxysmal positional vertigo (BPPV) fatigability and discuss how to eliminate BPPV fatigability. A physical simulation model of BPPV was developed to observe the effect of the Dix-Hallpike test on otolith location and explore strategies to eliminate fatigability. Dix-Hallpike test can keep the otoliths in the lower arm of the posterior semicircular canal away from the ampulla. When the head is tilted 30° forward, the otolith slides to the lower arm near the ampulla, which is sufficient to ensure that the starting position of the otolith is consistent when the Dix-Hallpike test is repeated. When the head is tilted 60° forward, the otolith can enter the ampulla and reach the bottom of the crista ampullaris, which leads to long latency because the otolith sliding in the ampulla does not cause an obvious hydrodynamic effect during the Dix-Hallpike test. The otoliths located on the short arm side of the posterior semicircular canal will break away from the short arm side and enter the utricle when the head is tilted 120° forward. The stable and consistent nystagmus induced by the improved diagnostic test may be a more important feature of BPPV.
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spelling pubmed-91211202022-05-21 Simulation Study of BPPV Fatigability Yang, Xiaokai Gao, Lidan Front Neurol Neurology To analyze the mechanism and clinical significance of Benign paroxysmal positional vertigo (BPPV) fatigability and discuss how to eliminate BPPV fatigability. A physical simulation model of BPPV was developed to observe the effect of the Dix-Hallpike test on otolith location and explore strategies to eliminate fatigability. Dix-Hallpike test can keep the otoliths in the lower arm of the posterior semicircular canal away from the ampulla. When the head is tilted 30° forward, the otolith slides to the lower arm near the ampulla, which is sufficient to ensure that the starting position of the otolith is consistent when the Dix-Hallpike test is repeated. When the head is tilted 60° forward, the otolith can enter the ampulla and reach the bottom of the crista ampullaris, which leads to long latency because the otolith sliding in the ampulla does not cause an obvious hydrodynamic effect during the Dix-Hallpike test. The otoliths located on the short arm side of the posterior semicircular canal will break away from the short arm side and enter the utricle when the head is tilted 120° forward. The stable and consistent nystagmus induced by the improved diagnostic test may be a more important feature of BPPV. Frontiers Media S.A. 2022-05-06 /pmc/articles/PMC9121120/ /pubmed/35599733 http://dx.doi.org/10.3389/fneur.2022.874699 Text en Copyright © 2022 Yang and Gao. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neurology
Yang, Xiaokai
Gao, Lidan
Simulation Study of BPPV Fatigability
title Simulation Study of BPPV Fatigability
title_full Simulation Study of BPPV Fatigability
title_fullStr Simulation Study of BPPV Fatigability
title_full_unstemmed Simulation Study of BPPV Fatigability
title_short Simulation Study of BPPV Fatigability
title_sort simulation study of bppv fatigability
topic Neurology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9121120/
https://www.ncbi.nlm.nih.gov/pubmed/35599733
http://dx.doi.org/10.3389/fneur.2022.874699
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