[Pedaudiological diagnostics in the first year of life . Clinical follow-up, risk factors, and middle ear function]

J W Rumstadt1, A am Zehnhoff-Dinnesen, A Knief

  • 1Klinik und Poliklinik für Phoniatrie und Pädaudiologie, Universitätsklinikum Münster, Kardinal-von-Galen-Ring 10, 48149, Münster, Deutschland.

HNO
|October 12, 2012
PubMed

Insights

Early detection of hearing loss is crucial. Universal neonatal hearing screening (UNHS) can diagnose hearing loss within three months, though risk factors present challenges.

Area of Science:

  • Pediatrics
  • Audiology
  • Neonatal Care

Background:

  • The Universal Neonatal Hearing Screening (UNHS) program aims for early hearing loss detection within three months of birth.
  • Evaluating the practicality and effectiveness of different screening methods is essential for timely intervention.

Purpose of the Study:

  • To assess the feasibility of diagnosing hearing loss within the critical first three months of life.
  • To evaluate the efficacy of automated auditory brainstem response (ABR) screening and diagnostic auditory brainstem-evoked audiometry responses in neonates.
  • To identify common risk factors associated with hearing loss in newborns.

Main Methods:

  • Analysis of 617 patients, including 246 referred by UNHS and 389 with identified risk factors.
  • Utilized automated auditory brainstem response (ABR) screening for initial assessment, followed by diagnostic auditory brainstem-evoked audiometry responses for referred cases.
  • Tympanometry at 226 Hz and 1,000 Hz was compared for specificity and sensitivity.

Main Results:

  • Hearing loss was diagnosed in 18% of all children, with higher rates (24%) in UNHS referrals and 34% in those with both referral and risk factors.
  • Automated ABR screening excluded hearing loss in 74% of cases; diagnostic ABR revealed elevated thresholds in 84% of further evaluated children.
  • Craniofacial anomalies, premature birth (<32 weeks), and syndromes were the most frequent risk factors. Some children showed hearing improvement upon reevaluation.

Conclusions:

  • Diagnosis of hearing loss within three months is achievable through UNHS, but remains challenging for infants with risk factors.
  • Automated ABR is effective in screening, while diagnostic ABR is crucial for confirmation.
  • Early identification and intervention, including hearing aids and treatment for middle ear effusion, are vital for affected infants.

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