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High-frequency audiometry and noise-induced hearing loss.

D Osterhammel

    Scandinavian Audiology
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    High-frequency audiometry (HFA) reveals preserved hearing in noise-exposed individuals. However, HFA is not an early indicator of noise trauma, though it may aid in evaluating workers

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    Area of Science:

    • Audiology
    • Occupational Health
    • Hearing Science

    Background:

    • Noise-induced hearing loss is a significant occupational hazard.
    • High-frequency audiometry (HFA) extends hearing assessment beyond conventional ranges.
    • Understanding high-frequency hearing is crucial for early detection and prevention of noise trauma.

    Observation:

    • Noise-exposed males with noise trauma audiograms underwent HFA up to 20,000 Hz.
    • A control group with normal hearing and no noise exposure was included.
    • Strict criteria excluded hereditary diseases and ensured normal middle ear function in both groups.

    Findings:

    • Conserved high-frequency hearing was observed in noise-exposed subjects.
    • Findings align with animal histology and previous high-frequency hearing studies.

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  • Case studies illustrate varied responses to acoustic trauma, including preserved high-frequency hearing and hypersensitivity.

    • Implications:

    • HFA is not a reliable early indicator for high-intensity noise exposure effects.
    • Age-related hearing loss (presbycusis) and noise damage can be cumulative in older adults.
    • HFA may be valuable for routine audiological screening of noise-exposed workers to identify hypersensitivity.