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Feasibility of Preoperative Video Head Impulse Test to Predict the Nerve of Origin in Patients with Vestibular Schwannomas

Authors
 Gi-Sung Nam  ;  Seong-Hoon Bae  ;  Hye-Jeen Kim  ;  Ji-Woong Cho  ;  In-Seok Moon 
Citation
 JOURNAL OF CLINICAL MEDICINE, Vol.10(12) : 2677, 2021-06 
Journal Title
JOURNAL OF CLINICAL MEDICINE
Issue Date
2021-06
Keywords
inferior vestibular nerve ; superior vestibular nerve ; vestibular function test ; vestibular schwannoma ; video head impulse test
Abstract
Vestibular schwannoma (VS) originates from Schwann cells in the superior or inferior vestibular nerve. Identifying the precise origin will help in determining the optimal surgical approach. We retrospectively analyzed the preoperative vestibular function test according to VS origin to determine whether the test is a valuable indicator of tumor origin. Forty-seven patients with VS (male:female = 18:29, mean age: 54.06 ± 13.50 years) underwent the cochleovestibular function test (pure-tone audiometry, caloric test, video head impulse test (vHIT), cervical and ocular vestibular-evoked myogenic potential, and posturography). All patients then underwent surgical removal of VS, and the schwannoma origin was confirmed. The tumor originated from the superior vestibular nerve (SVN group) in 21 patients, the inferior vestibular nerve (IVN group) in 26 patients, and an undetermined site in eight patients. The only value that differed significantly among the groups was the gain of the vestibular-ocular reflex (VOR) in the ipsilesional posterior canal (iPC) during the vHIT. Our results indicate that VOR gain in the iPC may be used to predict the nerve origin in patients with VS. Other cochleovestibular function tests have limited value to discriminate nerve origins, especially in cases of medium to large VS.
Files in This Item:
T202102669.pdf Download
DOI
10.3390/jcm10122677
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Moon, In Seok(문인석) ORCID logo https://orcid.org/0000-0002-3951-5074
Bae, Seong Hoon(배성훈) ORCID logo https://orcid.org/0000-0001-9243-9392
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/184239
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