Prevalencia de queixas de disfunções auditivas e vestibulares em trabalhadores expostos a ruido ocupacional atendidos no centro de referencia de saude do trabalhador de Campinas, no periodo de 1997 a 2003

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

Noise Induced Hearing Loss is the second cause of occupational disease in the workers avaliated at Campinas Centro de Referência de Saúde do Trabalhador (CRST) . A retrospective study was conducted, avaliating the workers with the diagnosis of noise induced hearing loss attended at CRST from1997 to August 2003. The objective was to study the ITequencyof auditive disfunctions symptoms as difficulty to hear, tinnitus and vertigo in these workers, to describe the casuistic and to compare the related symptoms with the variables: duration of exposure to occupational noise, age and auditive thresholds. After audiological and occupational evaluation, the data of 175 workers with noise induced, loss diagnosis were stored at the CRST data bank Epi Info Program, version 6. To describe the sample profile according to the different variables studied, frequency tables of the categoric variables and descriptive statistic from the continuous variables were employed. To analyse the association between the complaints and the categoric variables of interest, the Qui-Square test or the Fisher exact test were employed. The gender distribution was 174 men and 1 woman, age from21 to 63 years old and the mean of occupational noise exposition time was 15.75years. The main function was metallurgical with 71.26% ofthe population. The dizziness symptom was related in 13.22% of the cases, 88,24% sporadically. The tinnitus was referred in 80.81% ofthe cases. In 54.14% the symptom was constant. To the dizziness and tinnitus, there was no correlation between the symptom with the auditory thresholds, nor the occupation noise exposure time. The hearing loss complaint was referred in 74.12% of the cases, and presents correlation with both the occupation noise exposure time, the age and the auditory thresholds, in the mean thresholds of 500, 1000 and 2000 Hz and 3000, 4000 and 6000 Hz, bilaterally. Conclusions: Despite of advances in the knowledge and in the legislation about noise induced hearing loss, there are still many workers impaired by noise exposure.This occupational disease causes losses to the society and to the injured worker: difficulty in the insertion at a newjob, difficulty in the communication ability and a worse quality of life as demonstrated by the occurrence of the auditive disfunctions. It needs to emphasize the noise exposure prevention at the work environnent and outside it, in the information, instruction and training programes, in the early diagnosis and in extending the audiologic evaluation methods for these disfunctions

ASSUNTO(S)

perda auditiva provocada por ruido zumbido vertigem

ACESSO AO ARTIGO

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