101 0

Vibration-induced nystagmus in patients with vestibular schwannoma: Characteristics and clinical implications

Title
Vibration-induced nystagmus in patients with vestibular schwannoma: Characteristics and clinical implications
Author
심대보
Keywords
Vibration; Nystagmus; Vestibular schwannoma; Vestibular loss
Issue Date
2017-07
Publisher
ELSEVIER IRELAND LTD
Citation
CLINICAL NEUROPHYSIOLOGY, v. 128, no. 7, page. 1372-1379
Abstract
Objective: To investigate the clinical significance of vibration-induced nystagmus (VIN) in unilateral vestibular asymmetry and vestibular schwannoma. Methods: Thirteen patients with vestibular schwannoma underwent the VIN test, in which stimulation was applied to the mastoid processes and sternocleidomastoid (SCM) muscles on the ipsilateral and contralateral sides of lesions. Preoperative VIN was measured, and changes in VIN were followed up for 6 months after tumor removal. Significance of VIN was determined by evaluation of its sensitivity, correlation with vestibular function tests and tumor volume, and postoperative changes. Results: The overall pre and postoperative sensitivities of VIN were 92.3% and 100%, respectively, considering stimulation at all four sites. Maximum slow-phase velocity (MSPV) of VIN was linearly correlated with caloric weakness and tumor volume, especially when stimulation was applied to the SCM muscle. Postoperative MSPV of VIN exhibited stronger linear correlation with postoperative changes in canal paresis value and inverse correlation with tumor size upon stimulation of the ipsilateral SCM muscle than upon stimulation of other sites. During the 6-month follow-up period, persistence of VIN without changes in MSPV was observed even after vestibular compensation. Conclusions: Evoking VIN by stimulation of the mastoid processes and SCM muscles is effective for detecting vestibular asymmetry. It could also help determine the degree of vestibular asymmetry and volume of vestibular schwannoma if stimulation is applied to the SCM muscle. Significance: The results of this study could provide clues for the basic application of VIN in patients with vestibular loss and vestibular schwannoma. (C) 2017 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/abs/pii/S138824571730086X?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/115026
ISSN
1388-2457; 1872-8952
DOI
10.1016/j.clinph.2017.02.023
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE