Vestibular evoked myogenic potential (VEMP) in patients with acoustic neuromas

Objective: To study the utility of VEMP (vestibular-evoked myogenic potenti al) in the diagnosis of acoustic neuromas. Methods: Eighteen patients with unilateral acoustic neuromas were subjected to this study. Myogenic potenti al responding to loud click stimuli was recorded at ipsilateral sternocleid omastoid muscle. A normal range of VEMP was obtained from 20 controls. VEMP responses were compared with both, clinical symptoms and results of calori c tests. Result: Thirteen out of 18 patients showed decreased responses of VEMP at the affected side. VEMP responses seemed to have little relation wi th dysequilibrium, spontaneous nystagmus, canal paresis and pure-tone heari ng. Conclusion: VEMP is useful for detecting dysfunction of inferior vestib ular nerve in patients with acoustic neuromas. (C) 2001 Elsevier Science Ir eland Ltd. All rights reserved.