Asthma in chemical workers exposed to aliphatic polyamines

Area of Science:

• Occupational Medicine
• Pulmonary Medicine
• Industrial Hygiene

Background:

• Occupational asthma and chronic airways disease are significant concerns in industrial settings.
• Aliphatic polyamines are used in chemical manufacturing, posing potential respiratory risks to workers.

Purpose of the Study:

• To assess respiratory morbidity in workers exposed to aliphatic polyamines.
• To compare respiratory symptoms and lung function between exposed and unexposed workers.
• To identify the risk of occupational asthma and chronic airways disease associated with aliphatic polyamine exposure.

Main Methods:

• A comparative study involving 12 workers exposed to aliphatic polyamines and 60 unexposed workers.
• Assessment of respiratory symptoms including chronic cough, phlegm, wheezing, and exertional breathlessness.
• Measurement of diurnal variation in peak expiratory flow rates (DV-PEFR).
• Confirmation of asthma cases through bronchial challenge tests.

Main Results:

• Exposed workers reported significantly higher frequencies of chronic cough, phlegm, wheezing, and exertional breathlessness compared to unexposed workers (P < 0.01).
• Significantly greater diurnal variation in peak expiratory flow rates (DV-PEFR) was observed in amine workers (P < 0.01).
• Four out of 12 amine workers with wheezing had DV-PEFR > 15%, with symptom onset post-employment, and a second occupational asthma case was confirmed.

Conclusions:

• Exposure to aliphatic polyamines in chemical factories poses a very high risk of occupational asthma and chronic airways disease.
• Stringent protective measures are necessary to safeguard the respiratory health of industrial workers exposed to aliphatic amines.
• Early identification and intervention are crucial for managing occupational respiratory diseases in this sector.