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Comparison of long-term speech and impedance outcome of cochlear implantation in prelingual deaf paediatric patients between cochleostomy and round window insertion

Published online by Cambridge University Press:  25 October 2024

Nidhin Das K. Open the ORCID record for Nidhin Das K. [Opens in a new window] ,
Vidhu Sharma ,
Vishudh Mohan ,
Kapil Soni Open the ORCID record for Kapil Soni [Opens in a new window]  and
Amit Goyal Open the ORCID record for Amit Goyal [Opens in a new window]
Nidhin Das K.
Affiliation:
Department of Otorhinolaryngology, All India Institute of Medical Sciences, Jodhpur, India
Vidhu Sharma
Affiliation:
Department of Otorhinolaryngology, All India Institute of Medical Sciences, Jodhpur, India
Vishudh Mohan
Affiliation:
Department of Otorhinolaryngology, All India Institute of Medical Sciences, Jodhpur, India
Kapil Soni
Affiliation:
Department of Otorhinolaryngology, All India Institute of Medical Sciences, Jodhpur, India
Amit Goyal*
Affiliation:
Department of Otorhinolaryngology, All India Institute of Medical Sciences, Jodhpur, India
*
Corresponding author: Amit Goyal; Email: meetugoyal@yahoo.com
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Abstract

Objectives

To compare long-term impedance and functional outcomes between the round window and cochleostomy approaches in cochlear implantation patients.

Methods

Ninety prelingually deafened children who underwent unilateral cochlear implantation participated in this prospective observational study. Participants were divided into round window and cochleostomy groups. Impedance and speech perception were assessed at switch-on, and at 6, 12, and 24 months.

Results

Impedance was similar between groups except at switch-on, where the cochleostomy group had higher basal turn impedance (2.41 vs 1.32 kΩ). At 24 months, speech outcomes were as follows: word recognition in quiet (round window 96.2 per cent, cochleostomy 95.3 per cent), word recognition in noise (round window 88.8 per cent, cochleostomy 87.4 per cent), sentence recognition (round window 78.2 per cent, cochleostomy 77.3 per cent), and vowel recognition (round window 91.2 per cent, cochleostomy 90.1 per cent).

Conclusion

No significant differences in impedance or speech outcomes were found between the round window and cochleostomy groups, except for higher basal-turn impedance at switch-on in the cochleostomy group, indicating more fibrosis.

Keywords

cochlear implantsinner earhearing lossspeech disorderslanguage disorderscommunication disorderssensorineural

Information

Type
Main Article
Information
The Journal of Laryngology & Otology , Volume 139 , Issue 7 , July 2025 , pp. 564 - 571
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of J.L.O. (1984) LIMITED.

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Footnotes

Amit Goyal takes responsibility for the integrity of the content of the paper

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