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Measurement the arterial oxygen saturation (SaO2) by pulse oximetry (SpO2), using a fingertip sensor is commonly used in the management of patients with pulmonary diseases. The aim of study was to compare SaO2 results obtained from earlobe and SpO2 results obtained from fingertip in patients with pulmonary tuberculosis (PT). Methods: In 150 patients with PT (84 male and 66 female; aged 47.7±16.1; FEV1 74.4±28.1 % predicted) the paired samples were compared. In addition to SaO2, other parameters (pH, PaCO2, PaO2) were analyzed in the samples obtained from the earlobe. The Bland and Altman method, regression, and ROC-analysis were used. Results: The mean difference between SaO2 (94.4±3.6%) and SpO2 (94.9±3.7%) was minus 0.6 percentage point (pp). Limits of agreement were 4.0 pp and -5.1 pp. The value of the difference depended on PaO2 (correlation coefficient (R) was minus 0.49; coefficient of determination (R2) was 0.22; p According ROC curve analysis to determine value of SpO2 for the difference between SaO2 and SpO2 more 3 pp, when We did not find the influence of age, FEV1, pH, PaCO2 on the value of the difference between SaO2 and SpO2. Conclusion: Oxygen saturation results determined of different ways are often not identical. The difference between SaO2 and SpO2 are often more 3 pp when SpO2 results obtained from fingertip less than 94%.

Introduction: In recent years, the identification of non-tuberculous mycobacteria has become more frequent in the lung resection material of patients operated on for tuberculosis. Aim: To study the morphological features of non-tuberculous mycobacteriosis in the lung resection material of patients operated on for respiratory tuberculosis. Methods: Investigated the lung resection material of 68 patients. All patients were operated on for pulmonary tuberculosis. In the resection material for molecular genetic methods, various strains of non-tuberculous mycobacteria have been identified. A morphological study of the tuberculosis process was performed. Changes in lung tissue characteristic of non-tuberculous mycobacteriosis were highlighted. Results: In the lung resection material of patients, predominantly slowly growing non-tuberculous mycobacteria were identified: M. avium, M. intracellulare, M. kansasii, M. gordonae, M. xenopi. A hysthological study showed the presence of extensive areas of loose histiocytic macrophage granulomas without necrosis. Granulomas merged into conglomerates and underwent diffuse fibrotization. In these zones, a high concentration of acid-resistant mycobacteria was noted. Characteristic changes were observed with all forms of the pathological process in the lungs: disseminated, focal, fibrous-cavernous. Conclusion: The results obtained indicate the activation of lung tissue sclerosis in patients with a simultaneous combination of tuberculosis and non-tuberculous mycobacteriosis.