Open AccessBone conducted vibration is an effective stimulus for otolith testing in cochlear implant patients
Author(s) -
Laura Fröhlich,
Maira Wilke,
Stefan K. Plontke,
Torsten Rahne
Publication year - 2022
Publication title -
journal of vestibular research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.118
H-Index - 53
eISSN - 1878-6464
pISSN - 0957-4271
DOI - 10.3233/ves-210028
Subject(s) - audiology , medicine , cochlear implant , stimulus (psychology) , psychology , psychotherapist
BACKGROUND: Treatment with a cochlear implant (CI) poses the risk of inducing a behaviorally unmeasurable air-bone gap leading to false negative absence of cervical and ocular vestibular evoked myogenic potentials (cVEMPs, oVEMPs) to air conducted sound (ACS). OBJECTIVE: To investigate VEMP response rates to ACS and bone conducted vibration (BCV) in CI patients and the applicability of the B81 transducer for BCV stimulation. METHODS: Prospective experimental study including unilateral CI patients, measuring cVEMPs and oVEMPs to ACS and to BCV, comparing response rates, signed asymmetry ratios, latencies, and amplitudes. RESULTS: Data of 13 CI patients (mean age 44±12 years) were analyzed. For the CI side, oVEMP and cVEMP response rates were significantly higher for BCV (77%cVEMP, 62%oVEMP) compared to ACS (23%cVEMP, 8%oVEMP). For the contralateral side, no difference between response rates to ACS (85%cVEMP, 69%oVEMP) and BCV (85%cVEMP, 77%oVEMP) was observed. Substantially higher asymmetries were observed for ACS (–88±23%for cVEMPs, –96±11%for oVEMPs) compared to BCV (–12±45%for cVEMPs, 4±74%for oVEMPs). CONCLUSIONS: BCV is an effective stimulus for VEMP testing in CI patients. The B81 is a feasible stimulator.