Document Detail

Study of the noise spectrum on high frequency thresholds in workers exposed to noise.
MedLine Citation:
PMID:  22936146     Owner:  NLM     Status:  Publisher    
Noise level can be quantified and qualified based on sound characteristics such as intensity, type of spectrum, duration and distribution of the noise exposure during one's working hours. OBJECTIVE: To assess noise spectrum and the audiometric configuration of workers. MATERIALS AND METHODS: Contemporary cross-sectional cohort carried out in the Federal District - Brazil. We did an environmental analysis (spectral analysis) of the noise in companies from different industries, with audiological assessment of 347 workers. RESULTS: The spectral analysis revealed peaks at different frequencies for each industry investigated (8 kHz-metallurgical, 4 kHz-stone Works and 2 kHz-wood works). We noticed that the frequencies of 14 kHz and 16 kHz had significant differences between the various industries, with a greater prevalence of the metallurgical. CONCLUSION: The use of noise pressure measuring device, coupled to a frequency analyzer and high frequency audiometric assessment yielded an early detection of hearing damage, helping better organize preventive measures.
Aurea Oliveira Canha Ottoni; Anadergh Barbosa-Branco; Marlene Escher Boger; Sérgio Luiz Garavelli
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Publication Detail:
Journal Detail:
Title:  Brazilian journal of otorhinolaryngology     Volume:  78     ISSN:  1808-8686     ISO Abbreviation:  Braz J Otorhinolaryngol     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101207337     Medline TA:  Braz J Otorhinolaryngol     Country:  -    
Other Details:
Languages:  ENG; POR     Pagination:  108-114     Citation Subset:  -    
Universidade de Brasília.
Vernacular Title:
Estudo do espectro sonoro nos limiares de altas frequências em trabalhadores expostos ao ruído.
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