Pulmonary symptoms and spirometric values in Kangan Sour Gas Refinery workers

Area of Science:

• Occupational Health
• Environmental Medicine
• Pulmonology

Background:

• Sour gas refining involves exposure to hazardous emissions like hydrogen sulfide.
• Assessing the respiratory health impact on refinery workers is crucial for occupational safety.

Purpose of the Study:

• To evaluate respiratory symptoms and pulmonary function in workers at the Kangan Sour Gas Refinery.
• To determine if chronic low-dose exposure to sour gas emissions affects respiratory health.

Main Methods:

• A cross-sectional study involving 62 exposed refinery workers and 30 matched controls.
• Utilized health questionnaires, clinical examinations, and spirometry to assess respiratory health.
• Physicians conducting examinations were blinded to subject symptoms and exposure status.

Main Results:

• Refinery workers reported a higher frequency of respiratory symptoms (37.7%) compared to controls (23.3%).
• No statistically significant differences in pulmonary function test results (spirometry) were observed between workers and controls.
• Age and smoking status were controlled for in the comparison groups.

Conclusions:

• Chronic low-dose exposure to sour gas plant emissions, including hydrogen sulfide, was not associated with significant respiratory or spirometric alterations in Kangan Sour Gas Refinery workers.
• While symptoms were more prevalent, objective lung function measures did not indicate adverse effects from occupational exposure in this cohort.