In a 3-year survey, respiratory symptoms, spirometry, and methacholine reactivity were measured annually in welders (n=51) and non-welder control subjects (n=54) to determine whether welding-related symptoms are associated with accelerated decline in lung function or changes in airway reactivity.
In the across-workshift study, maximal midexpiratory flow rate declined reversibly during a welding day, whereas 1-second forced expiratory volume and forced vital capacity were unchanged.
In the longitudinal study, the welders had significantly more reversible work-related symptoms of cough, phlegm, wheeze, and chest tightness than the non-welder shipyard control subjects.
In this group of actively working welders, across-workshift changes in midflow and reversible symptoms were related to the welding occupation, but evidence for chronic irreversible effects on spirometry or airway reactivity was not seen over the 3 years of observation.
The short period of observation was not optimal for detecting a chronic effect on lung function.
Work practices and engineering controls may be successfully preventing irreversible respiratoty effects, but not mild reversible effects, in this group of welders.
Mots-clés Pascal : Pollution air, Lieu travail, Soudage arc, Toxicité, Exposition professionnelle, Poumon pathologie, Homme, Fonction respiratoire, Médecine travail, Appareil respiratoire pathologie
Mots-clés Pascal anglais : Air pollution, Work place, Arc welding, Toxicity, Occupational exposure, Lung disease, Human, Lung function, Occupational medicine, Respiratory disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0076118
Code Inist : 002B03L06. Création : 21/05/1997.