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Audiological findings of family farmers exposed to pesticides. | LitMetric

Audiological findings of family farmers exposed to pesticides.

Codas

Programa de Pós-graduação "Mestrado e Doutorado" em Distúrbios da Comunicação, Universidade Tuiuti do Paraná - UTP - Curitiba (PR), Brasil.

Published: September 2023

AI Article Synopsis

Article Abstract

Purpose: To analyze the possible differences among the hearing of farmers and their families when compared to the population not exposed to pesticides.

Methods: Cross-sectional study with 70 smallholder family farmers (research group), with the mean age of 39.7 years, of both sexes and a mean of 23.7 years of exposure to pesticides. We included a control group with 71 participants of both sexes with the mean age of 39.5 years, not exposed to either noise or chemical substances, to compare the results. In stage 1, both groups were submitted to conventional and high-frequency audiometry, and acoustic immittance. In stage 2, only people with normal hearing were submitted to the evoked otoacoustic emissions and suppression effect on transient otoacoustic emissions.

Results: Significant differences were observed between the groups in the conventional pure-tone and in the high-frequency audiometry, as well as in the acoustic reflex. The most affected frequencies in the conventional pure-tone audiometry ranged from 3 to 6 kHz and, in the high-frequency audiometry, from 9000 to 11200 Hz. As for the transient otoacoustic emissions, the worse suppression effect results were found in the research group.

Conclusion: There were differences among the hearing of family farmers and the control group. The conventional auditory thresholds are related to the group, age and sex. Farming is associated with impairments in the basal region of the cochlea, absence of acoustic reflex, reduced signal-to-noise ratio of the transient otoacoustic emissions, and dysfunction in the olivocochlear efferents of the auditory system.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10546921PMC
http://dx.doi.org/10.1590/2317-1782/20232022108ptDOI Listing

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