Study on hearing loss and its relationship with work in pesticide-exposed tobacco growers

  • França D
  • Lobato D
  • Moronte E
  • et al.
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Abstract

ABSTRACT The Purpose of this case report is to present four cases of tobacco growers with hearing loss due to occupational exposure to pesticides. A qualitative case study comprising three cases of sensorineural hearing loss with causal nexus (Cases 1, 2 and 4), and one (Case 3) of sensorineural hearing loss compatible with ototoxicity by pesticides, with causal nexus mainly based on minor neuropsychiatric disorders. The sample was composed of rural workers with health problems, in working age, having started working early in life, exposed to various pesticides, including organophosphates. The auditory and neurovegetative symptoms reported were noise discomfort (n = 2), speech perception difficulty (n = 3), dizziness (n = 2), and imbalance (n = 2). The pure-tone audiometry revealed a sensorineural hearing loss in one or more high frequencies, and one of the cases presented alteration in the brainstem auditory evoked potentials. There is evidence, in this study, of an association between hearing loss and work in tobacco growers exposed to pesticides, with peripheral auditory damage in four cases, and central damage in one of them. Thus, the need for a complete audiological evaluation of pesticide-exposed populations is highlighted.RESUMO O objetivo desse relato de casos clínicos é apresentar quatro casos de fumicultores com perda auditiva devida à exposição laboral a agrotóxicos. Trata-se de um estudo de caso qualitativo, incluindo 3 casos de perda auditiva sensório-neural com nexo causal (Casos 1, 2 e 4) e um caso (Caso 3) de perda auditiva sensório-neural compatível com ototoxidade por agrotóxicos, com nexo baseado, sobretudo, nos transtornos neuropsiquiátricos menores. A casuística foi constituída por trabalhadores rurais com problemas de saúde, em idade produtiva, com início de atividade laboral precoce, expostos a múltiplos agrotóxicos, incluindo os organofosforados. Os sintomas auditivos e neurovegetativos relatados foram: desconforto a sons (n=2), dificuldade de compreender a fala (n=3), tontura (n=2) e desequilíbrio (n=2). A audiometria tonal revelou perda auditiva sensório-neural em uma ou mais frequências altas e um dos casos apresentou alteração no Potencial Evocado Auditivo de Tronco Encefálico. Foi evidenciada associação entre perda auditiva e o trabalho nos fumicultores expostos a agrotóxicos, com danos auditivos periféricos nos quatro casos e dano central em um dos casos, demonstrando a necessidade da avaliação audiológica completa para populações expostas a agrotóxicos.

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APA

França, D. M. V. R., Lobato, D. C. B., Moronte, E. A., Albuquerque, G. S. C. de, Alcarás, P. A., Gonçalves, C. G. de O., & Lacerda, A. B. M. de. (2020). Study on hearing loss and its relationship with work in pesticide-exposed tobacco growers. Revista CEFAC, 22(3). https://doi.org/10.1590/1982-0216/202022311519

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