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Longitudinal evaluation of a hearing protector fit training program.

Caio Henrique de Carvalho Assunção1, Júlio César Trabanco, Raquel Fornaziero Gomes

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Summary
This summary is machine-generated.

Effective hearing protection device (HPD) use requires ongoing training and monitoring. While training improves personal attenuation rating (PAR), some workers still struggle with proper fit, necessitating alternative solutions.

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Area of Science:

  • Occupational Health
  • Audiology
  • Industrial Hygiene

Background:

  • Properly fitted hearing protection devices (HPDs) are crucial for preventing noise-induced hearing loss in occupational settings.
  • The effectiveness of HPDs is often measured by personal attenuation rating (PAR), which can be influenced by user training and fit.

Purpose of the Study:

  • To evaluate the effectiveness of a training program on the correct fitting of HPDs.
  • To assess the impact of training on personal attenuation rating (PAR) immediately after and six months post-training.

Main Methods:

  • Sixty-seven workers were invited to participate, with a final sample of 30.
  • Personal attenuation ratings (PARs) for foam and silicone protectors were measured using the 3M™ E-A-Rfit Validation System.
  • PAR measurements were taken before, immediately after, and six months after training, with repeat training sessions.

Main Results:

  • Training by an audiologist significantly increased PAR values compared to relying on printed instructions.
  • PAR values decreased at the six-month follow-up but increased again after retraining.
  • No statistically significant differences in PAR were found among the tested HPDs.
  • A notable percentage of workers (23-27%) failed to achieve adequate PAR even after two training sessions.

Conclusions:

  • Continuous worker training and longitudinal PAR monitoring are essential for ensuring effective HPD use.
  • Some individuals may not achieve adequate protection despite training, highlighting the need for alternative HPDs or protection methods.
  • The study underscores the importance of individualized approaches to hearing protection in the workplace.