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Related Experiment Videos

Long-term data on children implanted with a short electrode array.

Ilona Anderson1, Markus Pitterl, Henryk Skarzynski

  • 1Clinical Research Department, MED-EL, Fürstenweg 77a, Innsbruck, 6020, Austria. ilona.anderson@medel.com

International Journal of Pediatric Otorhinolaryngology
|January 20, 2005
PubMed
Summary

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This study shows that a short cochlear implant electrode array benefits children with cochlear ossification or malformations, enabling improved hearing outcomes over time.

Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Pediatric Audiology

Background:

  • Ossification and cochlear malformations were previously contraindications for cochlear implantation.
  • The MED-EL COMBI 40+ short electrode was developed for complex cochlear anatomies.

Purpose of the Study:

  • To evaluate the audiological outcomes of children with cochlear abnormalities receiving cochlear implantation with a short electrode array.
  • To compare the performance of the short electrode array with the standard COMBI 40+ electrode array.

Main Methods:

  • 18 children with cochlear ossification or malformations were implanted with the short electrode array.
  • Children were assessed using the EARS test battery pre-operatively and post-operatively.
  • Outcomes were compared to 18 matched children implanted with the standard COMBI 40+ electrode.

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Main Results:

  • Children using the short electrode showed consistent hearing improvements over time.
  • Initial performance with the short electrode was lower than the standard electrode.
  • Short electrode users demonstrated catch-up in performance at later test intervals, irrespective of etiology.

Conclusions:

  • The short electrode array is beneficial in cases where standard electrode insertion is not feasible due to cochlear anomalies.
  • Cochlear implantation with specialized electrode arrays can be successful in complex pediatric cases.
  • Long-term audiological benefits are achievable with short electrode arrays in challenging cochlear anatomies.