Cargando…
Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis
The aim of this study was to evaluate gain and refixation saccades (covert and overt) using a video head impulse test (vHIT) in the horizontal and vertical planes in patients after the onset of unilateral acute vestibular neuritis (AVN). Thirty-five patients were examined in the acute stage of AVN a...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9224852/ https://www.ncbi.nlm.nih.gov/pubmed/35743536 http://dx.doi.org/10.3390/jcm11123467 |
_version_ | 1784733470636900352 |
---|---|
author | Psillas, George Petrou, Ioanna Printza, Athanasia Sfakianaki, Ioanna Binos, Paris Anastasiadou, Sofia Constantinidis, Jiannis |
author_facet | Psillas, George Petrou, Ioanna Printza, Athanasia Sfakianaki, Ioanna Binos, Paris Anastasiadou, Sofia Constantinidis, Jiannis |
author_sort | Psillas, George |
collection | PubMed |
description | The aim of this study was to evaluate gain and refixation saccades (covert and overt) using a video head impulse test (vHIT) in the horizontal and vertical planes in patients after the onset of unilateral acute vestibular neuritis (AVN). Thirty-five patients were examined in the acute stage of AVN and at follow-up (range, 6–30 months); a control group of 32 healthy subjects also participated. At onset, the mean gain was significantly lower on the affected side in all of the semi-circular canal planes, mainly in the horizontal canal plane, and saccades (covert and overt) were more prevalent in the horizontal compared to the vertical canal planes. Multi-canal affection occurred more frequently (80% for gain, 71% for saccades) than isolated canal affection. At follow-up, which ranged from 6 to 30 months, the gain was recovered in all of the canals (anterior in 50%, horizontal in 42.8%, and posterior canal in 41.1% of cases), while covert and overt saccades were reduced in the horizontal and vertical planes. However, covert saccades were still recorded in a greater proportion (69%) than overt saccades (57%) in the horizontal plane and at a lower rate in the vertical planes. The compensatory mechanisms after AVN mainly involve the horizontal canal, as the refixation saccades—especially covert ones—were more frequently recorded in the horizontal than vertical canals. |
format | Online Article Text |
id | pubmed-9224852 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92248522022-06-24 Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis Psillas, George Petrou, Ioanna Printza, Athanasia Sfakianaki, Ioanna Binos, Paris Anastasiadou, Sofia Constantinidis, Jiannis J Clin Med Article The aim of this study was to evaluate gain and refixation saccades (covert and overt) using a video head impulse test (vHIT) in the horizontal and vertical planes in patients after the onset of unilateral acute vestibular neuritis (AVN). Thirty-five patients were examined in the acute stage of AVN and at follow-up (range, 6–30 months); a control group of 32 healthy subjects also participated. At onset, the mean gain was significantly lower on the affected side in all of the semi-circular canal planes, mainly in the horizontal canal plane, and saccades (covert and overt) were more prevalent in the horizontal compared to the vertical canal planes. Multi-canal affection occurred more frequently (80% for gain, 71% for saccades) than isolated canal affection. At follow-up, which ranged from 6 to 30 months, the gain was recovered in all of the canals (anterior in 50%, horizontal in 42.8%, and posterior canal in 41.1% of cases), while covert and overt saccades were reduced in the horizontal and vertical planes. However, covert saccades were still recorded in a greater proportion (69%) than overt saccades (57%) in the horizontal plane and at a lower rate in the vertical planes. The compensatory mechanisms after AVN mainly involve the horizontal canal, as the refixation saccades—especially covert ones—were more frequently recorded in the horizontal than vertical canals. MDPI 2022-06-16 /pmc/articles/PMC9224852/ /pubmed/35743536 http://dx.doi.org/10.3390/jcm11123467 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Psillas, George Petrou, Ioanna Printza, Athanasia Sfakianaki, Ioanna Binos, Paris Anastasiadou, Sofia Constantinidis, Jiannis Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis |
title | Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis |
title_full | Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis |
title_fullStr | Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis |
title_full_unstemmed | Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis |
title_short | Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis |
title_sort | video head impulse test (vhit): value of gain and refixation saccades in unilateral vestibular neuritis |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9224852/ https://www.ncbi.nlm.nih.gov/pubmed/35743536 http://dx.doi.org/10.3390/jcm11123467 |
work_keys_str_mv | AT psillasgeorge videoheadimpulsetestvhitvalueofgainandrefixationsaccadesinunilateralvestibularneuritis AT petrouioanna videoheadimpulsetestvhitvalueofgainandrefixationsaccadesinunilateralvestibularneuritis AT printzaathanasia videoheadimpulsetestvhitvalueofgainandrefixationsaccadesinunilateralvestibularneuritis AT sfakianakiioanna videoheadimpulsetestvhitvalueofgainandrefixationsaccadesinunilateralvestibularneuritis AT binosparis videoheadimpulsetestvhitvalueofgainandrefixationsaccadesinunilateralvestibularneuritis AT anastasiadousofia videoheadimpulsetestvhitvalueofgainandrefixationsaccadesinunilateralvestibularneuritis AT constantinidisjiannis videoheadimpulsetestvhitvalueofgainandrefixationsaccadesinunilateralvestibularneuritis |