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Auditory brainstem response in gas station attendants
Lenita da Silva Quevedo1, Tania Tochetto, Marcia Amaral Siqueira
1Human Communication Disorders, Federal University of Santa Maria, Soledade.
Unlabelled:
Ototoxicity of organic solvents can affect the hearing system up to the cochlea level and the central structures of hearing.
Objective:
To evaluate the neurophysiological integrity of the hearing system in subjects exposed to fuels using ABR.
Method:
Prospective study. We evaluated attendants from three gas stations in Santa Maria/RS. The sample had 21 subjects, who were evaluated by auditory brainstem response.
Results:
We found an alteration in the absolute latencies of Waves I and III and in all the interpeak latencies, in the right ear. In the left ear there was a change in the absolute latencies of all Waves, and in all the interpeak intervals. A change in the interaural difference of Wave V was found in 19% of the individuals. In the group exposed for more than five years, there were subjects with a statistically significant changes: in the I-V interpeak of the right ear; in the absolute latency of Wave I and in the III-V interpeak of the left year.
Conclusion:
Exposure to fuels can cause alterations in the central hearing system.
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