Risk factors for occupational acute mountain sickness

Area of Science:

• Occupational Health
• Altitude Medicine
• Environmental Health

Background:

• Previous research on occupational acute mountain sickness (AMS) has not adequately addressed severe cases.
• Understanding risk factors for severe AMS is crucial for effective prevention strategies in high-altitude workers.

Purpose of the Study:

• To identify risk factors for severe occupational AMS requiring compression chamber treatment.
• To investigate the association between smoking and severe AMS in high-altitude miners.

Main Methods:

• A nested case-referent study was conducted within a cohort of mine workers at 4000m.
• Logistic regression analysis examined risk factors including current smoking, smoking intensity, and exhaled carbon monoxide (CO).
• Cases of severe AMS treated in a chamber were compared to matched controls.

Main Results:

• Current smoking was strongly associated with an increased risk of severe AMS (OR 10.0).
• A history of less severe AMS was also a potent risk factor (OR 33.3).
• Smoking intensity and exhaled CO levels showed statistically significant associations with severe AMS.

Conclusions:

• Cigarette smoking is a significant and under-recognized risk factor for severe occupational AMS.
• Workplace-based smoking cessation interventions should be explored to reduce AMS-related morbidity.