Clinical significance of vibration-induced nystagmus

Audiology & Neuro-otology
H J ParkH A Shin

Abstract

The aims of the study were to characterize the vibration-induced nystagmus (VIN) in patients with unilateral vestibular neuritis (VN) and Ménière's disease (MD), and to clarify the clinical significance of VIN by comparing it with caloric results in patients with VN and MD. We recorded eye movements from 22 VN patients and 24 MD patients using unilateral 100-Hz vibration on the mastoid bone. Eye movements were analyzed and the maximum value of slow-phase eye velocity was obtained during vibration on each mastoid. The average value of slow-phase velocities was calculated. Spontaneous nystagmus was subtracted from the slow-phase velocity, whenever it was present. A canal paresis (CP) greater than 25% was considered pathologic. All but one VN patient showed pathologic CP with the direction of the slow-phase eye movement of VIN toward the lesioned side. Fifteen (63%) out of 24 MD patients showed VIN with the slow-phase eye movement directed to the lesioned side. Pathologic CP was present in 9 (38%) out of 24 MD patients and 8 of them showed slow-phase eye movements of VIN directed to the lesioned side. There were also 8 other MD patients who showed slow-phase eye movement of VIN directed to the intact side. Among them, 3 patients w...Continue Reading

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Citations

Jan 16, 2014·Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India·Sujiang XieDawei Tian
Jan 24, 2012·Acta Oto-laryngologica·Pedro Santos Marques, Nicolas Perez-Fernandez
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Sep 29, 2009·Clinical and Experimental Otorhinolaryngology·In-Sik LeeYeo Jin Lee
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Jul 19, 2011·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Ja-Won KooSung Kwang Hong

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