4.1 Article

Longitudinal Changes in Pulmonary Function of Asbestos Workers

Journal

JOURNAL OF OCCUPATIONAL HEALTH
Volume 52, Issue 5, Pages 272-277

Publisher

JAPAN SOC OCCUPATIONAL HEALTH
DOI: 10.1539/joh.L10062

Keywords

Asbestosis; Asbestos workers; Longitudinal changes; Pulmonary diffusing capacity; Pulmonary function

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Longitudinal Changes in Pulmonary Function of Asbestos Workers: Xiaorong WANG, et al. School of Public Health and Primary Care, Chinese University of Hong Kong, Prince of Wales Hospital,China Objective: To observe the longitudinal changes in pulmonary function associated with exposure to asbestos in a group of highly exposed workers. Methods: Pulmonary diffusing capacity (DLco) and spirometry of 243 Chinese asbestos workers were measured and remeasured after 5 and 10 yr. Their annual changes in relation to cumulative asbestos exposure and asbestosis were determined using multivariate analysis. Results: The greatest annual decline was observed in DLco, particularly in workers with asbestosis, followed by FVC and FEV(1). A greater decline in DLco accorded with a higher level of cumulative asbestos exposure. A similar trend was also seen in FVC, in which the highest exposure level was associated with 223 ml loss over each 5 yr period or 45 ml/yr. Conclusions: There were substantial declines in DLco and FVC over time in the asbestos workers, and a dose-response trend between asbestos exposure and accelerating functional loss. (J Occup Health 2010; 52: 272-277)

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