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Lung India Official publication of Indian Chest Society  
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Year : 1984  |  Volume : 2  |  Issue : 1  |  Page : 84-88

Health Study Of Nitric Acid Plant Workers



Correspondence Address:
S. R Kamat


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A total of 125 workers from nitric acid plant were studied with clinical interrogation, lung function and chest radiographs. Those working for a longer period showed a greater frequency of dyspnoea and cough (P<0.05), also chest pain, giddiness and headache (P<0.01). In radiographs, basal scars and deposits seen in 51 percent; fibrosis was also more frequent with longer work exposure (P<0.02). Those with abnormalities in both, showed significantly lower FEV1 and expiratory flow rates. There were restrictive changes in lung function and in symptomatic subjects there was reduced oxygen exchange. But slightly higher methoemoglobin levels were unrelated to abnormalities. Some of these changes seem to be related to chronic exposure to Nitric acid fumes at work. These findings need confirmation by further work.


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