Keywords
Abstract
Traditional pulmonary function tests (PFTs) (spirometry, body plethysmography, diffusion test) are quite time-consuming and difficult to perform methods, especially in the elderly patients. Impulse oscillometry (IOS) is advantageous in that all measurements are carried out with quiet breathing for 30–60 s and do not require the active participation of the patient. Objective: to compare IOS with traditional PFTs and to study its capabilities in the diagnosis of respiratory disorders in patients with lung cancer in the elderly patients. Materials and methods: an observational cross-sectional cohort study was performed. The study included 57 patients (55 (97%) male and 2 (3%) female, median age 69 (65–73) years). Smokers or ex-smokers accounted for 93% (39% and 54%, respectively), non-smokers — 7%. Central lung cancer was diagnosed in 22 (39%), peripheral lung cancer — in 35 (61%) patients. Results: ventilation disorders were detected in 54 (95%) patients, including 52 (96%) of obstructive, 1 — restrictive and 1 — mixed respiratory defects. Lung diffusion capacity was reduced in 30 (53%) patients. According to IOS data, deviations from the norm of R5, X5, AX (R5–R20) were detected in 43 (75%) patients. There was a statistically significant correlation between the parameters of the IOS with para meters of spirometry and most of the parameters of body plethysmography. Conclusion: IOS can be used to assess respiratory mechanics in elderly lung cancer patients.