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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Factors affecting phoneme discrimination in children with sequential bilateral cochlear implants.

Erva Degirmenci Uzun1, Merve Ozbal Batuk2, Gonca Sennaroglu2

  • 1Faculty of Health Sciences, Department of Audiology, Izmir Bakircay University, Izmir, Turkey.

International Journal of Audiology
|June 21, 2021
PubMed
Summary

Children with sequential bilateral cochlear implants (SeqBiCIs) show improved phoneme discrimination (PD) with age at first cochlear implant (CI1) and duration of use. Early CI1 success predicts later CI2 performance.

Keywords:
Sequential bilateral cochlear implantscochlear implantationpaediatric audiologyphoneme discriminationspeech perception

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Area of Science:

  • Audiology
  • Speech-Language Pathology
  • Biomedical Engineering

Background:

  • Sequential bilateral cochlear implantation (SeqBiCI) is a common approach for pediatric hearing loss.
  • Understanding factors influencing phoneme discrimination (PD) in children with SeqBiCIs is crucial for optimizing auditory rehabilitation.
  • Comparing PD performance between sequential and simultaneous bilateral cochlear implants (BiCIs) and normal hearing peers provides valuable insights.

Purpose of the Study:

  • To investigate variables affecting phoneme discrimination (PD) in children with sequential bilateral cochlear implants (SeqBiCIs).
  • To compare PD performance between the first (CI1) and second (CI2) cochlear implant sides.
  • To compare PD performance between children with SeqBiCIs and age-matched normal hearing (NH) peers.

Main Methods:

  • Participants included 23 children with SeqBiCIs and 23 age-matched NH children.
  • The Auditory Speech Sound Evaluation Phoneme Discrimination Test was administered to all participants.
  • Statistical analyses were performed to compare PD scores and identify influencing variables.

Main Results:

  • Significant differences in PD scores were observed between CI1, CI2, and bilateral cochlear implant (BiCI) conditions compared to NH peers.
  • PD scores with CI1 were significantly influenced by age at CI1 and duration of bilateral use.
  • CI1 PD scores were significant predictors of CI2 PD performance, and BiCI use duration predicted BiCI PD scores.

Conclusions:

  • Age at first cochlear implant (CI1) and duration of bilateral cochlear implant use enhance phoneme discrimination in children with SeqBiCIs.
  • The success of the first cochlear implant (CI1) can predict the success of the second cochlear implant (CI2).
  • These findings highlight the importance of early implantation and consistent bilateral device use for optimal auditory outcomes.