Occupational Asthma Reference

Salisbury DA, Enarson DA, ChanYeung M, Kennedy SM, First-aid reports of acute chlorine gassing among pulpmill workers as predictors of lung health consequences, Am J Industr Med, 1991;20:71-81,

Keywords: chlorine, ep, ld, pft, fu, se, pulp mill, sm, am

Known Authors

Moira Chan-Yeung, University of Hong Kong Moira Chan-Yeung

Susan Kennedy, Vancouver Susan Kennedy

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8 Workers in pulpmills can be exposed to a multitude of gases hazardous to respiratory function, the most common of which is chlorine gas. First-aid reports of acute gas overexposure incidents ("gassings") over an 8 year period were used to generate exposure data on a group of pulpmill workers whose respiratory function had been studied cross-sectionally in 1981 and 1988. Three hundred forty-eight incidents representing 174 workers were identified, 78% of these being treated solely by the first-aid attendant with the administration of O2 and cough suppression medication. Among 316 workers tested during a 1988 respiratory health survey, 78 had at least one chlorine or chlorine dioxide "gassing" incident. There was a significant decrease in the FEV1/FVC ratio (p less than .05) as well as increased risk for workplace associated chest symptoms in this group with at least one "gassing" incident. In an age- and smoking-matched analysis, among workers tested both in 1981 and 1988, there was a greater decline in FEV2/FVC ratio and MMF (p less than .05) in the "gassed" group than in the nonexposed group over the 7 year period of observation. These results emphasize the need for worker protection against accidental chlorine gas exposures

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