Occupational Medicine 1989;39:131-132
© 1989 Society of Occupational Medicine
research-article |
Six Month Follow-up of Fourteen Victims with Short-term Exposure to Chlorine Gas
Department of Respiratory Diseases, L. T.M.G. Hospital Bombay, India
Fourteen cases, 5 with pre-existing COAD, exposed to up to 30 p.p.m. chlorine gas in an accidental leakage, were followed up clinically, radiologically and by spirometry at 2 weeks, 4 weeks, 8 weeks and 6 months. All the patients were asymptomatic by 2 weeks and did not reveal any radiological abnormality. The FVC, FEV1 and FVC observed/predicted improved at 4 weeks (p <0·05, p <0·05, p <0·01) and the improvement in FEF0·250·75 reached statistical significance (p <0·05) at 6 months. The mean improvement in FVC was 0·841 and FEV1 was 0·61 at 4 weeks. The 5 patients with pre-existing COAD did not show any evidence of additional lung damage. The observations have been consistent with acute tracheobronchitis with trends towards complete recovery.
Requests for reprints should be addressed to: Professor A. C. Shah, Department of Respiratory Diseases, L. T. M. G. Hospital, Sion, Bombay 400022, India