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Prevalence of hearing impairment in children at risk

Fernanda Alves Botelho1, Maria Cândida Ferrarez Bouzada, Luciana Macedo de Resende

  • 1Federal University of Minas Gerais, Clinic Hospital, Brazil.

Brazilian Journal of Otorhinolaryngology
|December 25, 2010
PubMed

Insights

Early audiological testing is crucial as 6.3% of at-risk infants were found to have hearing impairment. This study highlights the prevalence of hearing loss in newborns, emphasizing the need for timely intervention.

Area of Science:

  • Pediatrics
  • Audiology
  • Public Health

Background:

  • Hearing impairment affects a significant portion of the population.
  • Early intervention is critical for proper infant development.
  • Identifying hearing loss in newborns is essential for effective management.

Purpose of the Study:

  • To determine the prevalence of hearing impairment in at-risk infants born between June 2006 and July 2008.
  • To identify potential correlations between various factors and the incidence of hearing loss.
  • To underscore the importance of early audiological screening in infants.

Main Methods:

  • A descriptive, cross-sectional study was conducted.
  • 188 newborns were evaluated using evoked otoacoustic emissions and auditory behavior tests.
  • Further audiological assessments, including impedance testing and brainstem auditory evoked potential testing, were performed as needed.

Main Results:

  • Out of 188 infants, 12 (6.3%) were diagnosed with hearing impairment.
  • The majority of hearing loss cases (83.3%) were bilateral.
  • Retrocochlear hearing loss was identified in 25% of affected infants.

Conclusions:

  • The study confirms a notable prevalence of hearing impairment in the studied infant population.
  • These findings strongly support the necessity of early audiological evaluations for all newborns.
  • Prompt identification and intervention can significantly improve developmental outcomes for infants with hearing loss.
Abstract

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