Abstract

The use of hydrochloric acid in large-scale metal-working processes can put workers at risk of exposure to chlorine fumes or other irritating gases. This can cause bronchial irritation, a form of chronic occupational asthma, whose long-term effects on lung function are as yet unknown. The purpose of this study is to determine the extent of functional impairment and long-term effects of one or more cases of chlorine inhalation. Workers who have been exposed to chlorine fumes will be followed and compared with a control group to evaluate lung function. The study also seeks to evaluate the effectiveness of anti-inflammatory medications administered immediately after accidental exposure involving significant changes in lung function. The findings should help identify workers at risk and facilitate their monitoring with a view to early detection of the bronchial irritation syndrome.