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European Archives of Oto-Rhino-Laryngology

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01-08-2019 | Cochlear Implant | Otology

Benefits of a contralateral routing of signal device for unilateral Naída CI cochlear implant recipients

Authors: Isabelle Mosnier, Ghizlene Lahlou, Jonathan Flament, Nathalie Mathias, Evelyne Ferrary, Olivier Sterkers, Daniele Bernardeschi, Yann Nguyen

Published in: European Archives of Oto-Rhino-Laryngology | Issue 8/2019

Abstract

Purpose

Many bilaterally deaf adults are only able to receive one cochlear implant (CI), resulting in suboptimal listening performance, especially in challenging listening environments. Adding a contralateral routing of signal (CROS) device to a unilateral CI is one possibility to alleviate these challenges. This study examined the benefit of such a CROS device.

Methods

Thirteen adult subjects with at least 6 months of CI use, and no or limited benefit of a hearing instrument in the contralateral ear were included in the study. The perceived benefit of a CROS device in everyday listening environments was evaluated up to 1 year after initial fitting using several questionnaires. Speech intelligibility performance was determined using the French matrix sentence test in quiet and in two speech-in-noise setups and was followed for 3 months after CROS fitting.

Results

Subjects indicated high satisfaction with the practical usability of the CROS device and long-term device retention was high. Perceived benefits in everyday listening environments were reported. Formal speech intelligibility tests revealed statistically significant median improvements of 6.93 dB SPL (Wilcoxon Z = 2.380, p = 0.017) in quiet and up to 8.00 dB SNR (Wilcoxon Z = 2.366, p = 0.018) in noise. These benefits were accessible immediately without a need for prolonged acclimatization.

Conclusions

Subjective satisfaction and device retention as well as speech intelligibility benefits in quiet and in noise prove the CROS device to be a valuable addition to a unilateral CI in cases of bilateral deafness where bilateral implantation is not an option.

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Title: Benefits of a contralateral routing of signal device for unilateral Naída CI cochlear implant recipients
Authors: Isabelle Mosnier
Ghizlene Lahlou
Jonathan Flament
Nathalie Mathias
Evelyne Ferrary
Olivier Sterkers
Daniele Bernardeschi
Yann Nguyen
Publication date: 01-08-2019
Publisher: Springer Berlin Heidelberg
Keyword: Cochlear Implant
Published in: European Archives of Oto-Rhino-Laryngology / Issue 8/2019
Print ISSN: 0937-4477
Electronic ISSN: 1434-4726
DOI: https://doi.org/10.1007/s00405-019-05467-9

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Benefits of a contralateral routing of signal device for unilateral Naída CI cochlear implant recipients

Abstract

Purpose

Methods

Results

Conclusions

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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