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DOI: 10.1055/s-0039-1686439
The Concept of Partial Electrode Insertion in Patients with Residual Hearing aiming for Electric-Acoustic Stimulation
Background:
In hearing preservation cochlea implantation the decision has to be made between a short electrode array with a low risk of hearing loss versus a long array with a larger cochlea coverage for electric stimulation only. Partial insertion of a longer electrode offers a solution for progressive hearing loss with afterloading of the electrode array.
Methods:
24 patients were implanted using partial insertion of a 24 mm electrode (16 mm insertion depth) and a 28 mm electrode (insertion depth 20 mm). Hearing preservation and speech perception in noise were examined.
Results:
The median hearing loss with 16 mm insertion was 6 dB, for 20 mm 17 dB. All patients use EAS with a median of 80% in HSM in sentence test in noise (10 dB SNR)
Discussion:
A partial insertion allows a good hearing preservation. Patients will benefit from EAS with excellent speech perception results in noise. In case of progressive loss the electrode can be inserted deeper to increase the cochlea coverage for electric stimulation only.
Publication History
Publication Date:
23 April 2019 (online)
© 2019. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).
Georg Thieme Verlag KG
Stuttgart · New York