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Changes in the ventilation function of the lungs during the formation of chronic obstructive pulmonary disease and its combination with lung cancer

https://doi.org/10.20538/1682-0363-2020-4-61-66

Abstract

Aim. To study the ventilation function of the lungs in patients with varying degrees of severity of chronic obstructive pulmonary disease (COPD) and in patients with COPD combined with lung cancer (LC), as well as to establish the features of its disorders using spirography and body plethysmography.

Materials and methods. A clinical and functional study of 57 individuals was carried out with 10 healthy patients (control group), 30 patients with COPD and 17 patients in whom LC was combined with COPD using the Masterlab Pro diagnostic complex (Erich Jaeger, Germany).

Results. In patients with early COPD, a decrease in MEF75 (a ventilation parameter characterizing small airway patency) is the most informative. With the progression of bronchial obstruction, both restrictive and obstructive disorders, characterized by a decrease in FEV1, VC, a change in the structure of the total lung capacity in the form of an increase in the RV/TLC ratio such as an increase in the RV/TLC ratio and an increase in bronchial resistance were recorded. In patients with LC and mild COPD, pulmonary volumes, capacities, flow-volume loop and bronchial resistance parameters did not differ from patients with COPD with a similar bronchial obstruction. In patients with LC and more severe COPD, in contrast to patients suffering from a similar severity of COPD, a decrease in the patency of large, medium and small diameter bronchi (PEF, MEF25, MEF50, MEF75) was detected, which indicated development of generalized bronchial obstruction.

Conclusion. Modern diagnostics of pulmonary ventilation disorders in patients with LC and COPD should be aimed at identifying the disease, and drug therapy should target maximum leveling of reversible components of bronchial obstruction in order to increase the functional reserve of the respiratory system and reduce the risk of postoperative complications caused by COPD.

About the Authors

S. Yu. Dobner
Cancer Research Institute, Tomsk National Research Medical Center (TNRMC) of Russian Academy of Sciences
Russian Federation

5, Kooperativny Str., Tomsk, 634009, Russian Federation



A. V. Dubakov
Siberian State Medical University
Russian Federation

2, Moscow Trakt, Tomsk, 634050, Russian Federation



Ya. V. Porovskiy
Siberian State Medical University
Russian Federation

2, Moscow Trakt, Tomsk, 634050, Russian Federation



S. A. Tuzikov
Cancer Research Institute, Tomsk National Research Medical Center (TNRMC) of Russian Academy of Sciences; Siberian State Medical University
Russian Federation

5, Kooperativny Str., Tomsk, 634009, Russian Federation

2, Moscow Trakt, Tomsk, 634050, Russian Federation



S. V. Miller
Cancer Research Institute, Tomsk National Research Medical Center (TNRMC) of Russian Academy of Sciences
Russian Federation

5, Kooperativny Str., Tomsk, 634009, Russian Federation



E. O. Rodionov
Cancer Research Institute, Tomsk National Research Medical Center (TNRMC) of Russian Academy of Sciences; Siberian State Medical University
Russian Federation

5, Kooperativny Str., Tomsk, 634009, Russian Federation

2, Moscow Trakt, Tomsk, 634050, Russian Federation



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Review

For citations:


Dobner S.Yu., Dubakov A.V., Porovskiy Ya.V., Tuzikov S.A., Miller S.V., Rodionov E.O. Changes in the ventilation function of the lungs during the formation of chronic obstructive pulmonary disease and its combination with lung cancer. Bulletin of Siberian Medicine. 2020;19(4):61-66. https://doi.org/10.20538/1682-0363-2020-4-61-66

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ISSN 1682-0363 (Print)
ISSN 1819-3684 (Online)