Particulate matter, endotoxin, and worker respiratory health on large Californian dairies.
J Occup Environ Med
; 57(1): 79-87, 2015 Jan.
Article
em En
| MEDLINE
| ID: mdl-25563544
ABSTRACT
OBJECTIVE:
To assess respiratory exposures and lung function in a cross-sectional study of California dairy workers.METHODS:
Exposure of 205 dairy and 45 control (vegetable processing) workers to particulate matter and endotoxin was monitored. Pre- and postshift spirometry and interviews were conducted.RESULTS:
Geometric mean inhalable and PM2.5 concentrations were 812 and 35.3 µg/m3 versus 481.9 and 19.6 µg/m3, respectively, for dairy and control workers. Endotoxin concentrations were 329 EU/m3 or 1122 pmol/m3 and 13.5 EU/m3 or 110 pmol/m3, respectively, for dairy and control workers. In a mixed-effects model, forced vital capacity decreased across a work shift by 24.5 mL (95% confidence interval, -44.7 to -4.3; P = 0.018) with log10 (total endotoxin) and by 22.0 mL (95% confidence interval, -43.2 to -0.08; P = 0.042) per hour worked.CONCLUSIONS:
Modern California dairy endotoxin exposures and shift length were associated with a mild acute decrease in forced vital capacity.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Testes de Função Respiratória
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Exposição Ocupacional
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Exposição por Inalação
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Indústria de Laticínios
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Endotoxinas
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Material Particulado
Tipo de estudo:
Observational_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adult
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Animals
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Humans
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Male
País como assunto:
America do norte
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article