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Related Experiment Videos

Airways obstruction, coal mining, and disability

N L Lapp1, W K Morgan, G Zaldivar

  • 1Pulmonary Division, West Virginia University Medical Center, University Hospital, Morgantown 26506.

Occupational and Environmental Medicine
|April 1, 1994
PubMed
Summary
This summary is machine-generated.

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Coal dust inhalation rarely causes disabling airways obstruction in coal miners without complicated coal workers' pneumoconiosis (CWP) or smoking. Most miners seeking compensation for occupational lung issues had other contributing factors, making coal dust alone an infrequent cause.

Area of Science:

  • Occupational Medicine
  • Pulmonary Medicine
  • Epidemiology

Background:

  • Recent suggestions link coal dust inhalation to disabling airways obstruction, even without complicated coal workers' pneumoconiosis (CWP) or smoking.
  • Potential causes for this obstruction include emphysema or bronchitis.

Purpose of the Study:

  • To determine the frequency of significant airways obstruction in United States coal miners seeking compensation for occupationally induced pulmonary impairment.
  • To investigate the role of coal dust inhalation as a sole cause of disabling airways obstruction.

Main Methods:

  • Analysis of 611
  • Black Lung
  • claimants.
  • Assessment of ventilatory capacity and exclusion of other contributing factors like smoking, complicated CWP, asthma, and bronchiectasis.

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Main Results:

  • Only one non-smoking subject, without other relevant diseases, exhibited sufficient airways obstruction to impair hard labor capacity.
  • This suggests an alternative explanation for his reduced ventilatory capacity may exist beyond coal dust or smoking.

Conclusions:

  • Significant airways obstruction solely attributable to coal dust inhalation, in the absence of smoking and complicated CWP, is exceedingly rare in coal miners.
  • Most cases of occupationally induced pulmonary impairment likely involve multiple contributing factors.