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Cortical Auditory Evoked Potential Testing in Children With Auditory Neuropathy Spectrum Disorder.

Thierry Morlet1,2,3, Jenna Valania4, Cassidy Walter5

  • 1Auditory Physiology and Psychoacoustics Research Laboratory, Nemours Children Hospital, Wilmington, DE.

American Journal of Audiology
|December 4, 2023
PubMed
Summary

Cortical auditory evoked potentials (CAEPs) objectively assess auditory neuropathy spectrum disorder (ANSD) in children. While CAEPs are often present, their prognostic value for hearing outcomes requires further investigation.

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Area of Science:

  • Neuroscience
  • Audiology
  • Pediatrics

Background:

  • Auditory neuropathy spectrum disorder (ANSD) presents diagnostic challenges in children.
  • Objective electrophysiological measures are crucial for evaluating ANSD.
  • Cortical auditory evoked potentials (CAEPs) offer a non-invasive method for assessing auditory pathway function.

Purpose of the Study:

  • To review the role of CAEPs in evaluating and managing children with ANSD.
  • To assess the relationship between CAEP characteristics and clinical features in ANSD patients.
  • To understand the implications of CAEP findings for auditory stimulation and management.

Main Methods:

  • Review of CAEP recordings from 66 children (2 months to 12 years) with ANSD.
  • Analysis of CAEP prevalence, morphology, latencies, and amplitudes.
  • Correlation of CAEP data with clinical features and management strategies.

Main Results:

  • CAEPs were present in 85.2% of ears; factors like prematurity or syndromes did not affect presence.
  • Shorter CAEP latencies were observed in ears with cochlear nerve deficiency.
  • Three distinct CAEP patterns were identified in patients with bilateral ANSD and present cochlear nerves.

Conclusions:

  • CAEPs can indicate the presence or absence of central auditory stimulation in ANSD.
  • Absent CAEPs suggest auditory deprivation, often leading to cochlear implantation.
  • Present CAEPs signify some auditory stimulation, but prognostic implications remain uncertain.