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Evoked potential assessment of auditory system integrity in infants
1Rose F. Kennedy Center for Research in Mental Retardation and Human Development, Albert Einstein College of Medicine, Bronx, New York.
Clinics in Perinatology
|September 1, 1991
Insights
Approximately 1 in 750 infants are born with significant hearing loss. This review covers key screening methods like auditory brainstem responses for early detection in newborns.
Area of Science:
- Pediatrics
- Audiology
- Neonatal Care
Background:
- Congenital hearing impairment affects 1 in 750 newborns.
- Early detection is crucial for developmental outcomes.
- Infants at risk require specialized auditory screening.
Observation:
- Review of established infant hearing screening methods.
- Explanation of auditory brainstem responses (ABR).
- Explanation of middle latency responses (MLR).
- Explanation of cortical auditory evoked potentials (CAEP).
Findings:
- Auditory brainstem responses (ABR) are a primary tool for objective infant hearing assessment.
- Middle latency responses (MLR) and cortical auditory evoked potentials (CAEP) offer complementary data.
- Case histories illustrate the application and interpretation of these electrophysiological measures.
Implications:
- Effective screening protocols can lead to earlier diagnosis of hearing impairment.
- Timely intervention based on screening results can significantly improve speech and language development.
- Standardized use of ABR, MLR, and CAEP enhances diagnostic accuracy in at-risk infants.
Abstract:
One child in 750 is born with a handicapping hearing impairment. The methods available to screen and evaluate infants at risk (auditory brainstem responses, middle latency responses, and cortical auditory evoked potentials) are reviewed, explained, and illustrated with case histories.