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Cochlear implant failure: is an auditory brainstem implant the answer?

Vittorio Colletti1, Marco Carner, Veronica Miorelli

  • 1ENT Department, University of Verona, Policlinico G. B. Rossi, Verona, Italy. entdept@libero.it

Acta Oto-Laryngologica
|July 1, 2004
PubMed
Summary

Auditory brainstem implants (ABIs) offer a solution for patients with cochlear implant (CI) failure due to anatomical issues. These implants can restore sound detection and speech understanding in cases where CIs do not yield satisfactory results.

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Area of Science:

  • Otolaryngology
  • Neuroscience
  • Biomedical Engineering

Background:

  • Cochlear implants (CIs) are a common treatment for severe to profound hearing loss.
  • However, some patients experience suboptimal outcomes with CIs due to various factors, including anatomical abnormalities.
  • Auditory brainstem implants (ABIs) present an alternative auditory rehabilitation strategy.

Observation:

  • This study evaluated five patients who received ABIs after CI failure.
  • Patients had diverse etiologies for hearing loss, including cochlear nerve disease, aplasia, ossification, and auditory neuropathy.
  • Previous CI use was a prerequisite for inclusion in this specific subgroup analysis.

Findings:

  • Post-ABI activation, adult patients demonstrated open-set sentence recognition scores ranging from 0% to 100%.

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  • One adult achieved a speech-tracking score of 56 words per minute.
  • Two pediatric patients, who had no hearing with CIs, could detect sounds and words with ABIs within three months.

    • Implications:

    • Auditory brainstem implants can effectively address hearing loss in cases of CI failure.
    • ABIs provide a viable option for auditory rehabilitation when cochlear anatomy or nerve pathways are compromised.
    • This highlights the importance of considering ABIs for patients with complex auditory disorders.