The Application of Impulse Oscillometry (IOS) in the Workers Who had been Exposed to Inorganic Dust Induced Early Airway Obstruction

Abstract

Background: We tried to examine the small airway diseases which can be found early, in workers exposed to inorganic dusts. This is measured in normal breath by using the impulse oscillometry (IOS). Conclusion:We could find out that 15 Hz, 20 Hz, and 35 Hz values of reactance were significantly influenced by pneumoconiosis. When usefulness and reproducibility to carry out the IOS are considered, it is thought that in future work will be required to draw the reference values for normal Korean persons.

Relation of Pulmonary Function Impairment and Coronary Artery Calcification by Multi-detector Computed Tomography in Group Exposed to Inorganic Dusts

“…In a recent study with subjects who exposed to inorganic dusts in Korea19, FEV 1 was significantly reduced as the subjects were older, and annual pulmonary function tended to decrease more in the pneumoconiosis group compared to that of the normal group. In another study20 the pulmonary function was significantly lower in the pneumoconiosis group than that of the normal group. In the present study, FEV 1 /FVC (%) was reduced significantly with age of subjects (r=-0.35, p=0.002) and FEV 1 /FVC (%) was significantly lower in the case group than that of the control group for pneumoconiosis.…”