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[Follow up study on auditory development of congenital hearing-impaired infants and toddlers]

Ying Yang1, Liyan Wang, Xibin Sun2

  • 1The Second Affiliated Hospital of Nanchang University, Nan Chang 330006, China.

Zhonghua Yi Xue Za Zhi
|January 28, 2016
PubMed

Insights

Home-based early intervention significantly improves auditory development in hearing-impaired children. Chronological age and intervention duration are key factors for successful auditory rehabilitation and speech intelligibility.

Area of Science:

  • Pediatrics
  • Audiology
  • Speech-Language Pathology

Background:

  • Hearing impairment in infants and toddlers poses significant developmental challenges.
  • Early intervention is crucial for mitigating the effects of hearing loss on auditory development.
  • Home-based programs offer a scalable approach to early auditory rehabilitation.

Purpose of the Study:

  • To investigate the developmental trajectory of auditory abilities in hearing-impaired infants and toddlers undergoing home-based early intervention.
  • To establish a foundation for developing effective rehabilitation and assessment strategies for pediatric hearing loss.

Main Methods:

  • A cohort of 80 hearing-impaired children across 5 Chinese provinces (2012-2014) was studied.
  • Participants were grouped by age, with auditory skills assessed at baseline and 6, 12, 18, and 24 months post-intervention using the Auditory Ability Test (initials, finals, disyllable words).
  • Repeated measures analysis of variance was employed to analyze the data.

Main Results:

  • Both chronological age and intervention duration significantly impacted the development of auditory skills (initials, finals, disyllable recognition; P<0.05).
  • Children in the older age group demonstrated superior recognition abilities at 6 and 12 months post-intervention compared to the younger group (P<0.05).
  • After two years, recognition rates reached 88-92%, with 18-47% achieving full scores and 70% exceeding 90% recognition.

Conclusions:

  • Chronological age and intervention duration are primary determinants of auditory development in hearing-impaired children.
  • A significant majority (70%) achieved 'Grade A' status after two years of intervention, indicating successful hearing identification and speech intelligibility.
  • These findings support the efficacy of home-based early intervention for improving auditory outcomes in young children with hearing loss.
Abstract

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