Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology · 2017
Ipsilesional Nystagmus Induced by Vibration in Subjects With Ménière's Disease or Vestibular Schwannoma.
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Vargas Gamarra María Fernanda, Krstulovic Claudio, Pérez Guillén Vanesa, Pérez-Garrigues Herminio
Аннотация
OBJECTIVE: To analyze the frequency in which vibration-induced nystagmus (VIN) with ipsilesional direction appears in subjects with Ménière's disease (MD) or vestibular schwannoma (VS).
STUDY DESIGN: Cross-sectional study.
SETTING: Tertiary referral center.
PATIENTS: Fifty-two subjects with MD and 21 subjects with vestibular schwannoma.
INTERVENTION: Videonystagmographic recordings of VIN at 30, 60, and 100 Hz.
MAIN OUTCOME MEASURES: Direction and slow phase velocity of VIN at 30, 60, and 100 Hz.
RESULTS: Ipsilesional Nystagmus was observed in 8 of 52 subjects with MD (15.4%) and in 11 of 21 subjects affected of unilateral VS (52.4%). Ipsilesional nystagmus was significantly higher in patients with VS (p = 0.003). The frequency of appearance of ipsilesional nystagmus in the subjects with VS who has not been treated was significantly higher than those who underwent radiosurgery (84.6% vs 0%, p = 0.046).
CONCLUSION: Ipsilesional vibration-induced Nystagmus can be present in subjects with vestibular deficits caused by MD and VS.
STUDY DESIGN: Cross-sectional study.
SETTING: Tertiary referral center.
PATIENTS: Fifty-two subjects with MD and 21 subjects with vestibular schwannoma.
INTERVENTION: Videonystagmographic recordings of VIN at 30, 60, and 100 Hz.
MAIN OUTCOME MEASURES: Direction and slow phase velocity of VIN at 30, 60, and 100 Hz.
RESULTS: Ipsilesional Nystagmus was observed in 8 of 52 subjects with MD (15.4%) and in 11 of 21 subjects affected of unilateral VS (52.4%). Ipsilesional nystagmus was significantly higher in patients with VS (p = 0.003). The frequency of appearance of ipsilesional nystagmus in the subjects with VS who has not been treated was significantly higher than those who underwent radiosurgery (84.6% vs 0%, p = 0.046).
CONCLUSION: Ipsilesional vibration-induced Nystagmus can be present in subjects with vestibular deficits caused by MD and VS.