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Processamento auditivo em trabalhadores expostos a ruído e inseticida: testes de ordenação temporal e P300

Authors: Delecrode, Camila Ribas;

Processamento auditivo em trabalhadores expostos a ruído e inseticida: testes de ordenação temporal e P300

Abstract

The literature reports that workers exposed to noise and organophosphate insecticides may show changes in the central auditory pathways and hence the central auditory processing. Thus, it becomes important to conduct studies in this population in order to assess their auditory skills with behavioral and electrophysiological procedures. Therefore, the purpose of this study was to analyze, in a comparative form, central auditory processing of men with and without occupational exposure to noise and organophosphate, using behavioral and electrophysiological tests. The basis of the study design was analytical / comparative, prospective and cross-sectional. This study was developed in a clinical school in a public university. The sample was composed of workers exposed to noise and organophosphate with pure tone audiometry within the normal range (lower or equal to 25 dB HL thresholds on frequencies of 250 to 8000 Hz bilaterally). As exclusion criteria was established: alcoholism, stress, diabetes insulo-dependent, hypertension, meningitis, syphilis and toxoplasmosis. In this study took part 29 men aged between 32 and 50 years, divided into two groups: study group (SG) consisted of 14 insecticide appliers , exposed to noise and organophosphate (average time in function of 17 years) and control group (CG) composed of 15 volunteers unexposed and no hearing complaints. In this research was applied: Frequency Patterns Test (FPT) and Duration Patterns Test (DPT) (Auditec®, adult version) and P300. The P300 stimuli were presented in two different ways, one by varying the frequency of the stimulus (P300f) and the other the duration (P300d). The Mann- Whitney test compared the results of behavioral and electrophysiological tests between groups and Spearman Correlation the correlation of the results of behavioral and electrophysiological tests. The analysis of variability of the FPT and DPT between the groups revealed that the number of correct answers...

A literatura especializada relata que trabalhadores expostos a ruído e inseticidas organofosforados podem apresentar alterações nas vias auditivas centrais e, consequentemente no processamento auditivo (central). Desta forma, torna-se importante a realização de estudos nessa população com o intuito de avaliar suas habilidades auditivas utilizando procedimentos comportamentais e eletrofisiológicos. Sendo assim, o objetivo deste estudo foi analisar, de forma comparativa, o processamento auditivo (central) de homens com e sem exposição ocupacional a ruído e organofosforado, utilizando testes comportamentais e eletrofisiológicos. Trata-se de um estudo analítico/comparativo, prospectivo e transversal desenvolvido em uma clínica escola de uma universidade pública. Foram incluídos na amostra os trabalhadores expostos a ruído e organofosforado com audiometria tonal liminar dentro dos padrões da normalidade (limiares menores ou iguais a 25dBNA nas frequências entre 250 e 8000 Hz, bilateralmente). Como critérios de exclusão foram estabelecidos: alcoolismo, estresse, diabetes, hipertensão, meningite, sífilis, toxoplasmose. Desta forma, participaram deste estudo 29 homens com idade entre 32 e 50 anos, subdivididos em dois grupos, sendo o grupo estudo (GE) composto por 14 desinsetizadores expostos a ruído e organofosforado (tempo médio na função de 17 anos) e o grupo controle (GC) composto por 15 voluntários não expostos e sem queixas auditivas. Para a realização da pesquisa foram aplicados testes de ordenação temporal (Teste de Padrão de Frequência -TPF e de Duração -TPD), versão adulta da Auditec® e o P300 de dois modos, um deles variando a frequência do estímulo (P300f) e o outro a duração (P300d). A análise inferencial foi realizada por meio do Teste de Mann-Whitney para comparar os achados dos testes comportamentais (TPF e TPD) e eletrofisiológicos (P300f e P300d) entre os grupos e a Correlação de Spearman...

Pós-graduação em Fonoaudiologia - FFC

Country
Brazil
Keywords

Ruido - Efeito fisiologico, Percepção auditiva, Auditory perception, Audição (Fisiologia), Exposição ocupacional

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green