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Occupationally induced airways obstruction

E Garshick1, M B Schenker, J A Dosman

  • 1Pulmonary and Critical Care Section, Brockton/West Roxbury Veterans Affairs Medical Center, West Roxbury, MA 02132, USA.

The Medical Clinics of North America
|July 1, 1996
PubMed
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Occupational dust, gas, and fume exposures are linked to chronic bronchitis and reduced lung function (FEV1). Current occupational standards may not adequately protect workers, especially when combined with smoking.

Area of Science:

  • Occupational Medicine
  • Pulmonary Medicine
  • Environmental Health

Background:

  • Occupational exposures to dusts, gases, and fumes are prevalent in various industries.
  • Chronic respiratory diseases, such as chronic bronchitis, and reduced lung function are significant public health concerns.

Purpose of the Study:

  • To review and synthesize findings on the association between occupational exposures and respiratory health outcomes.
  • To evaluate the sufficiency of current occupational exposure standards.

Main Methods:

  • Systematic review of studies examining occupational exposure to organic and inorganic dusts, gases, and fumes.
  • Analysis of respiratory function parameters, including forced expiratory volume in one second (FEV1) and forced vital capacity (FVC).

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Main Results:

  • Occupational exposures are associated with chronic bronchitis and decrements in FEV1 and FVC, often showing an obstructive pattern.
  • Smoking effects are typically additive, but interactions with occupational exposures (e.g., cotton dust) and age-related exposure effects (e.g., coal dust) were observed.
  • Current occupational standards may be insufficient, as evidenced by studies in coal and grain workers, though the magnitude of occupational effects is generally less than smoking.

Conclusions:

  • Occupational exposures contribute to respiratory impairment and disability, particularly when combined with smoking.
  • Further research is needed to elucidate exposure-response relationships, host factors, and the pathophysiology of occupationally induced airway diseases.