Persistent respiratory effects in survivors of the Bhopal disaster.
To examine the role of exposure to the 1984 Bhopal gas leak in the development of persistent obstructive airways disease.
Cross sectional survey.
Random sample of 454 adults stratified by distance of residence from the Union Carbide plant.
Main outcome measures
Self reported respiratory symptoms ; indices of lung function measured by simple spirometry and adjusted for age, sex, and height according to Indian derived regression equations.
Respiratory symptoms were significantly more common and lung function (percentage predicted forced expiratory volume in one second (FEV1), forced vital capacity (FVC), forced expiratory flow between 25% and 75% of vital capacity (FEF25-75), and FEV1/FEV ratio) was reduced among those reporting exposure to the gas leak.
The frequency of symptoms fell as exposure decreased (as estimated by distance lived from the plant), and lung function measurements displayed similar trends.
These findings were not wholly accounted for by confounding by smoking or literacy, a measure of socioeconomic status.
Lung function measurements were consistently lower in those reporting symptoms.
Our results suggest that persistent small airways obstruction among survivors of the 1984 disaster may be attributed to gas exposure.
Mots-clés Pascal : Fuite, Gaz, Morbidité, Appareil respiratoire pathologie, Long terme, Inde, Asie, Homme, Fonction respiratoire, Exploration, Exposition, Symptomatologie, Survie, Accident, Pollution, Toxicologie
Mots-clés Pascal anglais : Leak, Gases, Morbidity, Respiratory disease, Long term, India, Asia, Human, Lung function, Exploration, Exposure, Symptomatology, Survival, Accident, Pollution, Toxicology
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0003756
Code Inist : 002B03L02. Création : 31/05/1999.