Video Head Impulse Testing in Relapsing Remitting Multiple Sclerosis: Evaluation of Canal Gains, Asymmetry, and Corrective Saccades with Cerebellar Lesions
Journal of Otology, cilt.21, sa.2, ss.123-129, 2026 (ESCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 21 Sayı: 2
- Basım Tarihi: 2026
- Doi Numarası: 10.26599/joto.2026.9540063
- Dergi Adı: Journal of Otology
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
- Sayfa Sayıları: ss.123-129
- Anahtar Kelimeler: multiple sclerosis, vertigo, video head impulse test
- Ondokuz Mayıs Üniversitesi Adresli: Evet
Özet
Objective: This study aimed to compare video head impulse test (vHIT) metrics in relapsing–remitting multiple sclerosis (RRMS) versus controls, test differences by cerebellar MRI status within RRMS, and explore clinical/MRI correlates of corrective saccades. Methods: Single-center prospective study including 35 adults with RRMS and 35 age-/sex-matched controls. Disability was quantified by EDSS; a blinded neuroradiologist classified cerebellar involvement. The MS cohort was categorized into two subgroups according to the occurrence of cerebellar lesions. Each group participated in a vHIT to assess VOR gain. Results: RRMS participants had low disability (mean EDSS 0.95). Compared with controls, RRMS showed lower VOR gain in the right anterior/posterior, left posterior, and left lateral canals and higher asymmetry across RALP, LARP, and lateral planes (p=0.012, 0.024, <0.001). Corrective saccades differed between groups only in the left anterior canal (p=0.025). Within RRMS, cerebellar-positive versus cerebellar-negative subgroups did not differ for gain or asymmetry (all p>0.05); corrective-saccade prevalence was similar (33.3% vs 35.0%; chi-square p=0.918). In regression, cerebellar involvement, relapse count, EDSS, and disease duration were not associated with recurrent corrective saccades. Conclusion: vHIT reveals canal-selective gain reductions and elevated asymmetry in patients with mildly disabled RRMS, but these abnor-malities do not differ by cerebellar MRI status.