Is there a difference in the results of the video head impulse test in patients with a nosological diagnosis of Ménière's Disease and Vestibular Migraine?
Maria Carolaine Ferreira Aguiar, Gizele Francisco Ferreira do Nascimento, Ana Paula Machado Costa and 3 others
PMID 39841738WHAT IT FOUND
Video head impulse test results could not reliably distinguish between patients with Ménière's disease and those with vestibular migraine.
The tests showed similar patterns of dizziness and eye movement issues in both groups, so these results alone should not be used to confirm one diagnosis over the other.
Key findings
01The study found no statistical difference in the mean gain of the vestibulo-ocular reflex for the anterior, lateral, or posterior semicircular canals between patients with vestibular migraine and those with Ménière's disease.
02Symmetry between semicircular canals showed a statistical difference only for the posterior canals, with greater asymmetry in the vestibular migraine group.
03The authors concluded that the video head impulse test did not find statistical differences in examination results between the two conditions, except for posterior semicircular canal asymmetry.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The sample size was very small, with only 33 patients meeting the eligibility criteria. The study was retrospective, relying on medical records which could not confirm whether patients were experiencing active symptoms during their testing. The low occurrence of saccadic events prevented statistical comparison of these specific parameters. The study was described by the authors as preliminary.
Declared interests
The study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES).
The easy way to misread this
Do not interpret the lack of significant differences in the video head impulse test results as proof that the two conditions are identical. The study had a small sample size and was retrospective, meaning it may not have been powerful enough to detect subtle differences, and the timing of the tests relative to symptom crises was not controlled.