To identify characteristics associated with respiratory symptoms due to an episode of air pollution.
In October 1992, the population of the city of Winnipeg was exposed to elevated levels of particulate matter (total and<10 mum size), carbon monoxide, nitrogen dioxide, and volatile organic compounds due to smoke from adjacent fields where farmers were burning agricultural residue (straw and stubble).
We surveyed 428 participants in the ongoing Lung Health Study (35 to 64 years old, both sexes) with mild to moderate airways obstruction (mean FEV, percent predicted 73±12%), and a high level of airways hyperreactivity (23% of men and 37% of women).
While 37% of subjects were not bothered by smoke at all, 42% reported that symptoms (cough, wheezing, chest tightness, shortness of breath) developed or became worse due to the air pollution episode and 20% reported that they had breathing trouble.
Those with symptoms were more likely to be female than male and were more likely to be ex-smokers than smokers.
Subjects with asthma and chronic bronchitis were also more likely affected.
The degree of airways obstruction and the level of bronchial hyperresponsiveness were not associated with increased susceptibility. (...)
Mots-clés Pascal : Fumée, Incendie, Champ cultivé, Toux, VEMS, Surveillance, Etats Unis, Amérique du Nord, Amérique, Enquête, Toxicité, Etude longitudinale, Homme, Pollution air, Symptomatologie, Appareil circulatoire pathologie, Volume pulmonaire
Mots-clés Pascal anglais : Fumes, Fire, Cultivated field, Cough, Maximal expiratory volume per second, Surveillance, United States, North America, America, Survey, Toxicity, Follow up study, Human, Air pollution, Symptomatology, Cardiovascular disease, Lung volume
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0149560
Code Inist : 002B03M02. Création : 21/07/1998.