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Cochlear Implant: Analysis of the Frequency-to-Place Mismatch with the Table-Based Software OTOPLAN® and Its Influence on Hearing Performance.
Dessard, Laura; Gersdorff, Guillaume; Ivanovik, Nicola; Zoca-Assadi, Masoud; Nopp, Peter; Camby, Séverine; Lefebvre, Philippe P.
Afiliación
  • Dessard L; Department of Otorhinolaryngology, CHU, Liège, Belgium.
  • Gersdorff G; Department of Otorhinolaryngology, CHU, Liège, Belgium.
  • Ivanovik N; Medel, Innsbruck, Austria.
  • Zoca-Assadi M; Medel, Innsbruck, Austria.
  • Nopp P; Medel, Innsbruck, Austria.
  • Camby S; Department of Otorhinolaryngology, CHU, Liège, Belgium.
  • Lefebvre PP; Department of Otorhinolaryngology, CHU, Liège, Belgium.
Audiol Neurootol ; 29(3): 239-245, 2024.
Article en En | MEDLINE | ID: mdl-38190811
ABSTRACT

OBJECTIVE:

The purpose of this study was to compare the originally applied frequency allocation of cochlear implant electrodes assigned by default at the time of activation with a more recent frequency allocation that is anatomy-based by a software called OTOPLAN®. Based on a computed tomography scan of the temporal bone, this software calculates the position of each electrode in the cochlea and its corresponding tonotopic frequency. We also evaluated whether patients with a significant mismatch between these two allocations present poorer speech intelligibility. MATERIALS AND

METHODS:

Patients who underwent cochlear implantation from 2016 to 2021 at the University Hospital of Liege were included in this retrospective study. We used OTOPLAN® to calculate the tonotopic frequency allocation of each electrode according to its exact position in the cochlear duct. This anatomical frequency mapping was compared with the default frequency mapping at the time of cochlear implant activation. Finally, we compared the mismatch with the patients' auditory performance, represented by the Auditory Capacity Index (ACI).

RESULTS:

Thirteen patients were included in the study. All patients had a mismatch between the two frequency maps, to a variable extent (200 Hz-1,100 Hz). Frequency shift was significantly inversely correlated with ACI and with the time needed to improve speech intelligibility.

CONCLUSION:

Our primary results show that patients with a larger mismatch between default frequency mapping and anatomically assigned frequency mapping experience poorer hearing performance and slower adaptation to a cochlear implant.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Programas Informáticos / Implantes Cocleares / Implantación Coclear Tipo de estudio: Observational_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Audiol Neurootol Asunto de la revista: AUDIOLOGIA / PSICOFISIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Suiza
Texto completo
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Imprimir
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Programas Informáticos / Implantes Cocleares / Implantación Coclear Tipo de estudio: Observational_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Audiol Neurootol Asunto de la revista: AUDIOLOGIA / PSICOFISIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Bélgica Pais de publicación: Suiza