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Related Experiment Videos

Decreased lung function in long-term asbestos cement workers: a cross-sectional study.

C G Ohlson, T Rydman, L Sundell

    American Journal of Industrial Medicine
    |January 1, 1984
    PubMed
    Summary

    Occupational asbestos exposure, even at low fiber levels, led to minor lung function impairment in male workers. Obstructive changes were observed, affecting both smokers and never-smokers similarly.

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    Area of Science:

    • Occupational Health
    • Pulmonary Medicine
    • Environmental Health

    Background:

    • Asbestos cement plant workers with over 10 years of employment were studied.
    • Exposure involved chrysotile asbestos, with dust levels around 10 mg/m3 and fiber concentrations averaging 2 fibers/ml between 1950-1970.
    • Subjects with pneumoconioses and ex-smokers were excluded from the exposed group.

    Purpose of the Study:

    • To investigate the impact of occupational asbestos exposure on lung function in male workers.
    • To determine if low-level asbestos exposure causes significant lung function changes.
    • To assess the effect of asbestos exposure on smokers and never-smokers.

    Main Methods:

    • A cohort of 77 smokers and 48 never-smokers exposed to asbestos was compared with a referent group from non-asbestos plants.

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  • Lung function was assessed, including forced vital capacity and forced expiratory volume.
  • Statistical adjustments were made for age, height, tracheal area, and smoking status. Pleural plaque presence was also considered.

    • Main Results:

    • Statistically significant mean differences were found in forced vital capacity (-0.25 L) and forced expiratory volume (-0.30 L) between exposed workers and referents.
    • No significant differences in lung function were detected between exposed individuals with and without pleural plaques.
    • Both smokers and never-smokers in the exposed group showed similar lung function impairments.

    Conclusions:

    • Exposure to dust with relatively low asbestos fiber concentrations resulted in minor lung function impairment.
    • Obstructive changes were the primary lung function alterations observed.
    • The findings suggest that even controlled occupational asbestos exposure can have detrimental effects on respiratory health.