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Related Experiment Videos

Long-term versus short-term hearing aid benefit

R K Surr1, M T Cord, B E Walden

  • 1Audiology & Speech Center, Walter Reed Army Medical Center, Washington, DC 20307-5001, USA.

Journal of the American Academy of Audiology
|June 30, 1998
PubMed
Summary

Hearing aid benefit from wide dynamic range compression (WDRC) amplification showed no significant change after one year of use. A six-week acclimatization period is sufficient for assessing hearing aid benefit in clinical trials.

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Area of Science:

  • Audiology
  • Hearing Science
  • Biomedical Engineering

Background:

  • Hearing aid technology has advanced, with Wide Dynamic Range Compression (WDRC) offering improved audibility.
  • Long-term adaptation to new hearing aid amplification strategies requires investigation.
  • Previous studies suggest varying acclimatization periods for different hearing aid technologies.

Purpose of the Study:

  • To compare hearing aid benefit at 6 weeks versus a minimum of 1 year post-fitting.
  • To evaluate the long-term effectiveness of WDRC hearing aids.
  • To determine if extended use alters perceived and measured hearing aid benefit.

Main Methods:

  • Fifteen participants with mild-to-moderate sensorineural hearing loss were fitted binaurally with Resound BT2 WDRC hearing aids.

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  • The Profile of Hearing Aid Benefit (PHAB) and Connected Speech Test (CST) were administered at 6 weeks and after 1 year.
  • Standard manufacturer programming and fitting protocols were employed.

    • Main Results:

    • Significant aided benefit was observed for both the PHAB and CST at the 6-week assessment.
    • No statistically significant changes in hearing aid benefit were found between the 6-week and 1-year assessments.
    • Individual results indicated consistent benefit across the study duration.

    Conclusions:

    • A 6-week acclimatization period appears adequate for evaluating the benefits of this type of WDRC hearing aid.
    • Long-term use does not significantly alter the measured benefit obtained from WDRC hearing aids.
    • Findings support the use of shorter trial periods in clinical settings for WDRC amplification.