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The auditory characteristics of children with inner auditory canal stenosis

Yu Ai1,2,3,4, Lei Xu1,2,3,4, Li Li1,3

  • 1a Otolaryngology-Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University , Jinan , PR China ;

Acta Oto-Laryngologica
|March 17, 2016
PubMed

Insights

Children with narrow inner auditory canals (IAC) have a higher prevalence of auditory neuropathy spectrum disorder (ANSD). ANSD presents differently in children with IAC stenosis compared to those without.

Area of Science:

  • Otolaryngology
  • Pediatric Audiology
  • Neuroscience

Background:

  • Auditory neuropathy spectrum disorder (ANSD) is a hearing impairment where the auditory nerve is affected.
  • Inner auditory canal (IAC) stenosis, a narrowing of the canal, may impact auditory function.
  • The relationship between IAC stenosis and ANSD characteristics requires further investigation.

Purpose of the Study:

  • To investigate the association between IAC stenosis and ANSD in children.
  • To characterize the auditory features of ANSD in the presence of IAC stenosis.
  • To compare auditory findings in children with and without isolated IAC stenosis.

Main Methods:

  • Auditory tests were performed on 21 children with IAC stenosis.
  • Auditory brainstem responses (ABR) were analyzed, focusing on Wave V and cochlear microphonic (CM) responses.
  • A comparative analysis was conducted between children with isolated IAC stenosis and those with other inner ear anomalies.

Main Results:

  • Auditory brainstem response (ABR) Wave V was absent in all patients.
  • Cochlear microphonic (CM) responses were detected in 81.1% of ears with stenotic IAC.
  • 84.2% of ears with isolated IAC stenosis showed CM response on ABR waveforms.

Conclusions:

  • Children with IAC stenosis exhibit a significantly higher prevalence of ANSD.
  • Auditory characteristics of ANSD differ in children with IAC stenosis compared to those without.
  • IAC stenosis is a critical factor associated with ANSD in pediatric populations.

Keywords:
Inner auditory canalauditory neuropathy spectrum disorder

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