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Related Experiment Videos

Multichannel auditory brainstem implantation: the Australian experience.

R J Briggs1, P Fagan, M Atlas

  • 1Department of Otolaryngology, University of Melbourne, Royal Melbourne Hospital, Australia. rjbriggs@netspace.net.au

The Journal of Laryngology and Otology. Supplement
|February 24, 2001
PubMed
Summary

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Multichannel auditory brainstem implants (ABI) offer hearing restoration for neurofibromatosis type 2 (NF2) patients. Seven of eight patients achieved useful auditory sensations, with five regularly using the implant.

Area of Science:

  • Neurosurgery
  • Otolaryngology
  • Biomedical Engineering

Background:

  • Neurofibromatosis type 2 (NF2) often leads to bilateral vestibular schwannomas, causing hearing loss.
  • Auditory brainstem implantation (ABI) is a surgical option for hearing restoration in NF2 patients.
  • Established ABI programs in Australia have facilitated clinical trials.

Purpose of the Study:

  • To evaluate the efficacy and safety of multichannel auditory brainstem implantation (ABI) in NF2 patients.
  • To assess auditory perception and implant usability following ABI surgery.
  • To identify factors influencing successful outcomes in ABI for NF2.

Main Methods:

  • Eight NF2 patients underwent multichannel ABI insertion using a translabyrinthine approach.
  • Electrode array positioning was confirmed intra-operatively and post-operatively.

Related Experiment Videos

  • Auditory perception and psychophysical testing were performed to evaluate outcomes.

    • Main Results:

    • Successful electrode placement was achieved in seven out of eight patients.
    • All patients with successful placement reported auditory perception with electrical stimulation.
    • Six patients achieved useful auditory sensations, with five regularly using the ABI.
    • Non-auditory sensations were minimal and manageable through electrode programming.

    Conclusions:

    • Auditory brainstem implantation is a viable option for hearing restoration in NF2 patients.
    • Successful ABI outcomes are associated with proper electrode placement and patient selection.
    • Patients without debilitating disease and with non-aidable contralateral hearing may benefit most from ABI.