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Airway disease in non-smoking asbestos workers

Journal Article · · Arch. Environ. Health; (United States)
Ninety-seven non-cigarette-smoking white male insulators from the midwestern United States had significantly reduced forced expiratory volume in 1 second (FEV/sub 1.0/) and forced expiratory flow from 75 to 85% of expired volume when compared to a reference population of Michigan male nonsmokers. There were parenchymal opacities with a profusion of 1/0 or greater in 7 and pleural changes in 13 of these 97 nonsmokers. Asbestos, in the absence of cigarette smoke effects and other diseases, appears to decrease airflow, probably by the distortion of small airways (< 2 mm) by peribronchiolar fibrosis. This stiffening of the lung parenchyma protects midflow (FEF/sub 25-75/) as the fibrosis increases the lung's radial traction on airways larger than 2 mm. This observation contributes to the natural history of physiological impairment due to asbestos disease.
Research Organization:
USC School of Medicine, Los Angeles
OSTI ID:
6252663
Journal Information:
Arch. Environ. Health; (United States), Journal Name: Arch. Environ. Health; (United States) Vol. 40:6; ISSN AEHLA
Country of Publication:
United States
Language:
English