There were examined 102 males (25 men with dust bronchitis (DB), 28 persons with chronic obstructive pulmonary disease (COPD) of I stage, 49 patients with COPD of II stage). The control group included 15 healthy volunteers. The mean age was (52,30±4,71) years, the mean working experience — (20,70±2,05) years. The clinical course, exacerbation rate per year, term of dust influence may serve as clinical criteria and predictors of disease progression. Intensity of dyspnea, FEV1 value and distance of 6-minute walk test are recommended to evaluate the respiratory system functional condition in patients with DB and COPD.
