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Brainstem-evoked response audiometry: normative data from the preterm infant

C Cox, M Hack, D Metz

    Audiology : Official Organ of the International Society of Audiology
    |January 1, 1981
    PubMed
    Summary
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    Brainstem-evoked response audiometry (BERA) reliably assesses auditory function in preterm infants. This study established normative data for BERA wave latencies, aiding in the identification of auditory abnormalities.

    Area of Science:

    • Neonatal audiology
    • Neurophysiology
    • Pediatric audiology

    Background:

    • Premature infants are at higher risk for hearing impairment.
    • Early detection of auditory dysfunction is crucial for developmental outcomes.
    • Standardized auditory assessment tools are needed for this population.

    Purpose of the Study:

    • To evaluate the utility of Brainstem-evoked response audiometry (BERA) in preterm infants.
    • To establish normative data for BERA wave latencies across different conceptional ages.
    • To provide guidelines for classifying auditory abnormalities using BERA.

    Main Methods:

    • Brainstem-evoked response audiometry (BERA) was conducted on 40 preterm infants with low neonatal risk scores.
    • Mean latencies for waves I and V were measured.

    Related Experiment Videos

  • Infants were grouped by conceptional age: 33-34, 35-36, 37-38, and 39-40 weeks.

    • Main Results:

    • BERA demonstrated to be a valuable and reliable method for assessing auditory function in preterm neonates.
    • Normative data for wave I and V latencies were obtained for the studied age groups.
    • A threshold of 2 standard deviations from the mean latency of wave V was proposed for abnormality classification.

    Conclusions:

    • BERA is a highly effective tool for auditory assessment in preterm infants.
    • The established normative data and proposed classification method enhance diagnostic accuracy.
    • Early and reliable auditory screening is vital for preterm infant development.