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Performing Intracochlear Electrocochleography During Cochlear Implantation
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Acoustic component programming in children with cochlear implants using electrocochleography.

Smita Agrawal1, Sarah Coulthurst2, Alison Nachman2

  • 1Advanced Bionics LLC, Valencia, CA, USA.

International Journal of Audiology
|August 6, 2021
PubMed
Summary
This summary is machine-generated.

Electrocochleography (ECochG) thresholds offer a reliable method for fitting the acoustic component in pediatric cochlear implant (CI) recipients. This objective measurement complements behavioral methods, improving hearing assessment for children with CIs.

Keywords:
CI programmingCochlear implantelectrocochleography (ECochG)paediatric

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Area of Science:

  • Audiology
  • Biomedical Engineering
  • Otoacoustic Emissions

Background:

  • Objective measurements enhance hearing assessment reliability in pediatric cochlear implant (CI) users.
  • Electrocochleography (ECochG), specifically the cochlear microphonic (CM) component, shows promise in correlating with hearing thresholds.
  • Intracochlear ECochG is feasible in CI recipients with residual acoustic hearing.

Purpose of the Study:

  • To evaluate the efficacy of ECochG thresholds in programming the acoustic component of CIs in children.
  • To determine if ECochG-derived thresholds can replace or supplement behavioral audiometry for CI fitting.

Main Methods:

  • A prospective study involving eight pediatric CI recipients (3.5-15.5 years) using Advanced Bionics HiFocus Mid-Scala electrodes.
  • Acoustic thresholds were measured using both behavioral audiometry and ECochG.
  • Two CI programs were created: one based on behavioral thresholds and another on ECochG thresholds.

Main Results:

  • Speech outcomes were comparable between CI programs fitted using behavioral versus ECochG thresholds.
  • A significant majority (7/8) of participants preferred the CI program fitted using ECochG thresholds.
  • One participant preferred an electric-only program.

Conclusions:

  • ECochG thresholds provide a valuable supplement to behavioral methods for fitting the acoustic component in pediatric CI users.
  • This objective approach aids in reliable and effective CI programming for children with residual hearing.
  • ECochG offers a promising tool for optimizing auditory rehabilitation in young CI recipients.