期刊
AUDIOLOGY AND NEURO-OTOLOGY
卷 20, 期 1, 页码 39-50出版社
KARGER
DOI: 10.1159/000362780
关键词
Eye movement measurements; Artifacts; Vertigo; Vestibular neuritis; Stroke
资金
- Swiss National Science Foundation [PBBEP2 136573]
Video-oculography devices are now used to quantify the vestibulo-ocular reflex (VOR) at the bedside using the head impulse test (HIT). Little is known about the impact of disruptive phenomena (e.g. corrective saccades, nystagmus, fixation losses, eye-blink artifacts) on quantitative VOR assessment in acute vertigo. This study systematically characterized the frequency, nature, and impact of artifacts on HIT VOR measures. From a prospective study of 26 patients with acute vestibular syndrome (16 vestibular neuritis, 10 stroke), we classified findings using a structured coding manual. Of 1,358 individual HIT traces, 72% had abnormal disruptive saccades, 44% had at least one artifact, and 42% were uninterpretable. Physicians using quantitative recording devices to measure head impulse VOR responses for clinical diagnosis should be aware of the potential impact of disruptive eye movements and measurement artifacts. (c) 2014 S. Karger AG, Basel
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