Publication
Title
Electrically evoked compound action potentials are associated with the site of intracochlear stimulation
Author
Abstract
Objectives Objective measurements to predict the position of a cochlear electrode during cochlear implantation surgery may serve to improve the surgical technique and postoperative speech outcome. There is evidence that electrically evoked compound action potentials (ECAP) are a suitable approach to provide information about the site of stimulation. This study aims to contribute to the knowledge about the association between the intraoperative intracochlear ECAP characteristics and the site of stimulation. Methods In a retrospective cohort study, patients undergoing cochlear implant surgery with flexible lateral wall electrode arrays (12 stimulating channels) between 2020 and 2022 were analyzed. The CDL was measured using a CT-based clinical planning software. ECAP were measured for all electrode contacts and associated to the CDL as well as to the site of stimulation in degree. Results Significant differences among the amplitudes and slopes for the individual stimulated electrode contacts at the stimulation sites of 90°, 180°, 270°, 360°, 450° and 540° were found. The values showed a trend for linearity among the single electrodes. Conclusions ECAP characteristics correlate with the electrode’s position inside the cochlea. In the future, ECAP may be applied to assess the intracochlear position inside the cochlea and support anatomy-based fitting.
Language
English
Source (journal)
European archives of oto-rhino-laryngology / European Federation of Oto-Rhino-Laryngological Societies; European Laryngological Society. - Berlin, 1990, currens
Publication
Berlin : Springer , 2024
ISSN
0937-4477 [print]
1434-4726 [online]
DOI
10.1007/S00405-024-08493-4
Volume/pages
(2024) , p. 1-7
Pubmed ID
38551698
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
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Affiliation
Publications with a UAntwerp address
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Creation 02.04.2024
Last edited 03.04.2024
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