N Takeichi1, T Sakamoto, S Fukuda, Y Inuyama. 1. Department of Otolaryngology, Hokkaido University School of Medicine, Sapporo, Japan. takeichi@med.hokudai.ac.jp
Abstract
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.
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.
Authors: Vera C Zingler; Eva Weintz; Klaus Jahn; Kai Bötzel; Judith Wagner; Doreen Huppert; Andrea Mike; Thomas Brandt; Michael Strupp Journal: J Neurol Date: 2008-09-26 Impact factor: 4.849