Post-shift changes in pulmonary function in a cement factory in eastern Saudi Arabia

Area of Science:

• Occupational Health
• Environmental Medicine
• Respiratory Physiology

Background:

• Occupational exposure to respirable dust in cement factories poses a significant health risk.
• Previous studies have indicated potential respiratory effects of cement dust exposure.
• Understanding the acute impact of cement dust on lung function is crucial for worker safety.

Purpose of the Study:

• To investigate the acute effects of cement dust exposure on lung function in cement production workers.
• To determine the relationship between cement dust exposure levels and changes in spirometric parameters.
• To assess the role of smoking as a confounding factor in cement dust-related respiratory effects.

Main Methods:

• Cross-sectional study conducted in a cement factory in Eastern Saudi Arabia.
• Spirometry performed on 149 cement workers and 348 controls to measure FEV1, FVC, FEV1/FVC%, and FEF25-75%.
• Respirable dust levels were assessed and compared against ACGIH guidelines.

Main Results:

• Respirable dust levels exceeded recommended ACGIH limits across all factory sections.
• Exposed cement workers showed significantly greater post-shift reductions in FEV1, FEV1/FVC%, and FEF25-75% compared to controls.
• Multiple regression analysis confirmed a significant association between cement dust exposure and post-shift lung function changes, independent of smoking status.

Conclusions:

• Acute exposure to cement dust can lead to significant, measurable reductions in lung function.
• The findings suggest an irritant effect of cement dust on the airways, potentially causing bronchoconstriction.
• Occupational health interventions are necessary to mitigate the respiratory risks associated with cement dust exposure.