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Published on: August 28, 2019
Vestibular evoked myogenic potential (VEMP) in patients with acoustic neuromas
N Takeichi1, T Sakamoto, S Fukuda
1Department of Otolaryngology, Hokkaido University School of Medicine, Sapporo, Japan. takeichi@med.hokudai.ac.jp
Objective:
To study the utility of VEMP (vestibular-evoked myogenic potential) in the diagnosis of acoustic neuromas.
Methods:
Eighteen patients with unilateral acoustic neuromas were subjected to this study. Myogenic potential responding to loud click stimuli was recorded at ipsilateral sternocleidomastoid muscle. A normal range of VEMP was obtained from 20 controls. VEMP responses were compared with both, clinical symptoms and results of caloric tests.
Result:
Thirteen out of 18 patients showed decreased responses of VEMP at the affected side. VEMP responses seemed to have little relation with dysequilibrium, spontaneous nystagmus, canal paresis and pure-tone hearing.
Conclusion:
VEMP is useful for detecting dysfunction of inferior vestibular nerve in patients with acoustic neuromas.
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