A Descriptive Study of Pulmonary Function Comparison Between Spot Welding and Assembly Line Workers in a Large...

Area of Science:

• Occupational Health
• Pulmonary Medicine
• Industrial Hygiene

Background:

• Investigated pulmonary function in a large Iranian automotive company.
• Compared spot-welding workers (exposed to metal fumes) with assembly line workers (unexposed).

Purpose of the Study:

• To define pulmonary function in automotive workers.
• To assess the impact of metal fumes on respiratory health.
• To compare lung function between exposed and unexposed worker groups.

Main Methods:

• Compared pulmonary function of 1,798 spot-welding workers and 2,160 assembly line workers.
• Collected and analyzed 120 breathing zone air samples for metal fumes.
• Compared age, anthropometrics, smoking status, and respiratory symptoms between groups.

Main Results:

• Mean forced expiratory volume in 1 second (FEV1) was 3.9 L; mean forced vital capacity (FVC) was 4.9 L.
• Predicted FEV1 and FVC percentages were near 100%, indicating good lung health.
• No statistically significant differences in pulmonary function were found between the exposed and unexposed groups.

Conclusions:

• Effective occupational health and screening programs may mitigate negative effects of metal fume exposure.
• Pre-employment screening for healthy workers likely contributes to preserved lung function.
• The automotive industry's health initiatives appear successful in maintaining respiratory health across different job roles.