Repeated video head impulse testing in patients is a stable measure of the passive vestibulo-ocular reflex

• 作者: M.Muntaseer Mahfuz Jennifer L.Millar Michael C.Schubert
• 来源期刊: 中华耳科学杂志（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Research Articles
• 页码范围: 128-137
• 页数: 10页
• 语种: 英文

摘要

Objectives: The video head impulse test (vHIT) is used as a measure of compensation yet it's stability in patients with vestibular pathology is unknown.Methods: 144 patients (n=72 female, mean 54.46 ± 15.8 years) were grouped into one of three primary diagnoses (Peripheral, Central, or Mixed). Subjects were further categorized based on sex (male versus female), ear (left versus right;ipsilesional versus contralesional), age (six groups ranging from 19 to 84 years), and duration between visits (five groups, mean 191.46 ± SE 29.42 days, median 55.5 days). The gain of the VOR during passive head rotation was measured for each semicircular canal (horizontal, anterior, posterior). Results: There was no difference in the VOR gain within any semicircular canal between the two visits (horizontal: p = 0.179; anterior: p = 0.628; posterior: p = 0.613). However, the VOR gain from the horizontal canals was higher than the vertical canals for each visit (p<0.001). Patients diagnosed with peripheral vestibular pathology had significantly lower (p≤0.001) horizontal semicircular canal gains at each visit. There was no difference in VOR gain between sex (p = 0.215) or age groupings (p = 0.331). Test-retest reliability of vHIT in patient subjects is good (ICC=0.801) and the VOR gain values across two separate visits were significant and positively correlated (r=0.67) regardless of sex, ear, age, or duration between visits. Conclusion: The vHIT is a stable measure of VOR gain over two different times across a variety of vestibular patients with no influence of age or sex.