Electric Auditory Brainstem Response Audiometry in Cochlear Implants: New Recording Paradigm

Author:

Gabr Takwa1ORCID,Debis Hossam2,Hafez Ahmed3

Affiliation:

1. Audiovestibular Medicine Unit, Faculty of Medicine, Kafrelsheikh University, Elgeesh Street, Kafrelsheikh 33516, Egypt

2. MED-EL GmbH, Cairo 11799, Egypt

3. MED-EL GmbH, Riyadh 52091, Saudi Arabia

Abstract

(1) Background: Cochlear implants (CIs) are widely applied to recover audition for patients with severe degrees of or total hearing loss. Electrical stimulation using the electrically evoked ABR (E-ABR) can be recorded in CI recipients through the device. This work was designed to study E-ABR recorded individually from different channels located at the apical, middle, and basal cochlear regions in comparison to their simultaneous separated or adjacent combined recordings. (2) Methods: This study included 17 children fitted with unilateral cochlear implants. All children were subjected to impedance measurement, electrical compound action potentials (ECAP), and E-ABR recording of three channels located at the apical, middle, and basal cochlear regions. This was followed by simultaneous E-ABR recording of the three “separated” channels in comparison to E-ABR recording from three adjacent channels located at the middle cochlear region. (3) Results: Similar E-ABR latencies and amplitudes were found using either individual or simultaneously separated or adjacent combined recording. However, the mean amplitude measures of E-ABR for combined adjacent channels showed a positive correlation with the applied current level. (4) Conclusions: Combined E-ABR recording from adjacent channels is a faster and more reliable technique that can be used effectively without compromising the results of the recorded E-ABR.

Publisher

MDPI AG

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