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...
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MDPI AG
2022-06-01
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| Series: | Journal of Clinical Medicine |
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| Online Access: | https://www.mdpi.com/2077-0383/11/12/3467 |
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| author | George Psillas Ioanna Petrou Athanasia Printza Ioanna Sfakianaki Paris Binos Sofia Anastasiadou Jiannis Constantinidis |
| author_facet | George Psillas Ioanna Petrou Athanasia Printza Ioanna Sfakianaki Paris Binos Sofia Anastasiadou Jiannis Constantinidis |
| author_sort | George Psillas |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T23:27:00Z |
| format | Article |
| id | doaj.art-1aaf5687e81b491c9232adc9e560cee5 |
| institution | Directory Open Access Journal |
| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-09T23:27:00Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Clinical Medicine |
| spelling | doaj.art-1aaf5687e81b491c9232adc9e560cee52023-11-23T17:16:30ZengMDPI AGJournal of Clinical Medicine2077-03832022-06-011112346710.3390/jcm11123467Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular NeuritisGeorge Psillas0Ioanna Petrou1Athanasia Printza2Ioanna Sfakianaki3Paris Binos4Sofia Anastasiadou5Jiannis Constantinidis61st Otolaryngology Department, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA Hospital, Stilponos Kyriakidi St., 546 36 Thessaloniki, Greece1st Otolaryngology Department, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA Hospital, Stilponos Kyriakidi St., 546 36 Thessaloniki, Greece1st Otolaryngology Department, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA Hospital, Stilponos Kyriakidi St., 546 36 Thessaloniki, Greece1st Otolaryngology Department, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA Hospital, Stilponos Kyriakidi St., 546 36 Thessaloniki, GreeceDepartment of Rehabilitation Sciences, Cyprus University of Technology, Limassol 3036, Cyprus1st Otolaryngology Department, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA Hospital, Stilponos Kyriakidi St., 546 36 Thessaloniki, Greece1st Otolaryngology Department, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, AHEPA Hospital, Stilponos Kyriakidi St., 546 36 Thessaloniki, GreeceThe 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.https://www.mdpi.com/2077-0383/11/12/3467video head impulse testsaccadesvestibular gainvestibular neuritisvestibuloocular reflexsemicircular canal |
| spellingShingle | George Psillas Ioanna Petrou Athanasia Printza Ioanna Sfakianaki Paris Binos Sofia Anastasiadou Jiannis Constantinidis Video Head Impulse Test (vHIT): Value of Gain and Refixation Saccades in Unilateral Vestibular Neuritis Journal of Clinical Medicine video head impulse test saccades vestibular gain vestibular neuritis vestibuloocular reflex semicircular canal |
| 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 | video head impulse test saccades vestibular gain vestibular neuritis vestibuloocular reflex semicircular canal |
| url | https://www.mdpi.com/2077-0383/11/12/3467 |
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