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Lung function in Pakistani welding workers.

Sultan A Meo1, M Abdul Azeem, M M F Subhan

  • 1Department of Physiology, Hamdard College of Medicine & Dentistry, Hamdard University, Karachi, Pakistan.

Journal of Occupational and Environmental Medicine
|October 10, 2003
PubMed
Summary
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Exposure to welding fumes significantly impairs lung function, particularly in welders with over 9 years of experience. This study highlights an obstructive pattern of lung disease, emphasizing the need for preventive measures.

Area of Science:

  • Occupational Health
  • Pulmonary Medicine
  • Environmental Health

Background:

  • Welding fumes are a known occupational hazard.
  • Manual metal arc welding poses risks due to fume generation.
  • Lack of ventilation and respiratory protection exacerbates exposure risks.

Purpose of the Study:

  • To investigate the impact of welding fumes on lung function.
  • To determine the relationship between exposure duration and lung function impairment.
  • To identify the pattern of lung disease associated with welding exposure.

Main Methods:

  • Matched case-control cross-sectional study design.
  • Spirometry used to assess lung function parameters.
  • Study included 50 nonsmoking manual metal arc welders and controls.

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Main Results:

  • Welders with >9 years of exposure showed reduced forced expiratory volume in one second (FEV1), FEV1/forced vital capacity (FVC%), and peak expiratory flow (PEF).
  • A dose-effect relationship was observed between years of welding and lung function decline.
  • Impaired lung function in nonsmoking welders presented primarily as obstructive airways disease.

Conclusions:

  • Occupational exposure to welding fumes leads to significant lung function impairment.
  • Prolonged exposure demonstrates a dose-dependent effect on lung health.
  • Urgent implementation of preventive strategies is crucial to prevent long-term lung damage in welders, especially in developing countries.