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Children With Single-Sided Deafness Use Their Cochlear Implant.

Melissa Jane Polonenko1, Blake Croll Papsin, Karen Ann Gordon

  • 11Archie's Cochlear Implant Laboratory, The Hospital for Sick Children, Toronto, Ontario, Canada; 2Neurosciences & Mental Health, The Hospital for Sick Children, Toronto, Ontario, Canada; 3Institute of Medical Sciences, The University of Toronto, Toronto, Ontario, Canada; 4Collaborative Program in Neuroscience, The University of Toronto, Toronto, Ontario, Canada; 5Department of Otolaryngology - Head & Neck Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada; and 6Department of Otolaryngology - Head & Neck Surgery, The University of Toronto, Toronto, Ontario, Canada.

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Summary

Children with single-sided deafness (SSD) consistently use cochlear implants (CI) daily, with longer use in noisy environments. Device acceptance is high, indicating CI benefits for accessing bilateral sound.

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Area of Science:

  • Audiology
  • Pediatric Otolaryngology
  • Neuroscience

Background:

  • Single-sided deafness (SSD) presents unique challenges in auditory perception and spatial hearing.
  • Cochlear implants (CI) are increasingly considered for children with SSD to potentially improve sound awareness and speech understanding.
  • Assessing device acceptance and usage patterns in pediatric populations is crucial for understanding treatment efficacy.

Purpose of the Study:

  • To evaluate the acceptance and daily usage patterns of cochlear implants (CI) in children diagnosed with single-sided deafness (SSD).
  • To determine how duration of CI use varies across different listening environments and age groups.
  • To investigate the relationship between CI experience, device usage, and environmental factors.

Main Methods:

  • Retrospective analysis of anonymized datalogs from 7 children (aged 1.1–14.5 years) with SSD who received a CI in their deaf ear.
  • Collected data included frequency and duration of coil disconnections, average daily CI use, and usage in various intensity ranges and environment types.
  • Statistical analyses included linear mixed effects and nonlinear regression to assess factors influencing CI use.

Main Results:

  • Children with SSD used their CI for an average of 7.4 hours per day, with consistent use observed from activation.
  • Older children demonstrated longer daily CI usage compared to younger children.
  • CI use was highest in moderately loud environments (50–70 dB A) with speech-in-noise; coil-off frequency decreased with experience.

Conclusions:

  • Pediatric CI use in SSD is consistent and spans diverse daily listening environments.
  • CI usage in SSD children is comparable to bilateral hearing aid use but exceeds use in less severe unilateral hearing loss.
  • The findings suggest that the non-implanted ear does not impede CI use and that significant interaural asymmetry may enhance device acceptance.