Comparison of a Traditional and Novel Evoked Compound Action Potentials Recording Approach and Evoked Auditory Brainstem Responses in Pediatric Cochlear Implants Users

Autores de IIS La Fe

• Laura Cavalle Garrido

  Autor

• Carlos De Paula Verneta

  Autor

• Abel Guzman Calvete

  Autor

• Miguel Armengot Carceller

  Autor

Participantes ajenos a IIS La Fe

• Schwarz, K
• Lauss, K
• Kontides, A
• Gomez, MD

Grupos

• Biomedicina Molecular, Celular y Genómica

  

  Leader

  José María Millán Salvador

Abstract

OBJECTIVES: Electrically evoked compound action potentials (eCAP) recordings are widely used in functional evaluation and fitting of cochlear implants (CI) in clinics. We compared the results from two eCAP recording approaches (StandardART and FineGrain, MED-EL, Austria). The FineGrain method is more advanced than the Auditory Nerve Response Telemetry (StandardART) method in terms of the stimulation and algorithm for the eCAP threshold detection. To understand the benefits of these alterations, we compared the two methods on a larger scale in pediatric CI users alongside evoked auditory brainstem responses (eABR). MATERIALS and METHODS: We collected the eCAP recordings obtained with both methods from a population of pediatric subjects with CI, either intra-or post-operatively. The eABR recordings were only collected post-operatively. For comparability reasons, we used the same stimulation rate and similar amplitude levels for all three approaches. RESULTS: Our results demonstrate that, although the success rates are similar, the FineGrain method outperforms traditional StandardART in terms of robustness and measurement duration. The eCAP recordings in general outperform the eABR in terms of speed. CONCLUSION: We conclude that the eCAP recordings are the method of choice for measuring the auditory neural activity, and FineGrain outperforms StandardART. From the three investigated approaches, we conclude that FineGrain performed best and should be the first-choice method in pediatric patients.

Keywords

• Cochlear implant; hearing loss; pediatrics; action potential; electrically evoked compound action potential