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Auditory system dysfunction in Brazilian gasoline station workers.

Simone Mariotti Roggia1, Aline Gomes de França2, Thais C Morata3

  • 1a Department of Audiology and Speech Therapy , Federal University of Santa Catarina , Florianopolis , Brazil.

International Journal of Audiology
|April 25, 2019
PubMed
Summary
This summary is machine-generated.

Brazilian gasoline station workers exhibit auditory system dysfunction, including peripheral and central hearing issues, despite noise levels below 85 dBA. Exposure to gasoline may contribute to these communication difficulties in noisy environments.

Keywords:
Hearingauditory-evoked potentialsfuelshearing disorderssolvents

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Area of Science:

  • Occupational health
  • Audiology
  • Environmental toxicology

Background:

  • Gasoline station workers face potential risks from chemical and noise exposure.
  • Understanding the impact of occupational exposures on the auditory system is crucial for worker health.
  • Previous research indicates potential links between chemical exposure and hearing impairment.

Purpose of the Study:

  • To investigate auditory system function in Brazilian gasoline station workers.
  • To assess peripheral and central auditory processing using a comprehensive audiological test battery.
  • To compare the auditory performance of exposed workers with a non-exposed control group.

Main Methods:

  • Cross-sectional study involving 77 gasoline station workers and 36 controls.
  • Audiological evaluation included pure-tone audiometry, acoustic immittance, otoacoustic emissions (TEOAEs, DPOAEs), auditory brainstem response (ABR), and P300 auditory-evoked potentials.
  • Noise exposure levels were measured, with time-weighted averages below 85 dBA.

Main Results:

  • While 67.5% had normal audiometric results, 59.7% of workers reported communication difficulties.
  • Gasoline station workers performed significantly worse than controls on most audiological tests, excluding P300.
  • Peripheral and central auditory processing deficits were observed in the exposed group.

Conclusions:

  • Gasoline station workers demonstrate peripheral and central auditory dysfunctions.
  • Occupational exposure to gasoline is a potential contributing factor to these auditory impairments.
  • Findings highlight the need for targeted hearing conservation programs in this occupational group.