Possibilities of the assessment of the level and degree of bronchial patency according to the data of a flow-volume loop in patients who underwent lung surgery

On the basis of examination of 45 patients who had been operated on for tuberculoma, tumors, abscesses, echinococcosis, developmental anomalies of the lungs and bronchiectasis it is concluded that R. F. Klement's tables of the degrees of bronchial patency gradation for phthisiopulmonological patients cannot be used for characterizing bronchial patency in individuals who had undergone operation. The dependence of some indices of the flow-volume loop on the volume of the resected lung is shown. The authors claim that in order to use the above-mentioned tables in characterizing the degree of bronchial patency in patients subjected to operation, a conversion factor must be elaborated.