

The study of respiratory function of the lungs in patients with Bronchial Asthma
https://doi.org/10.33667/2078-5631-2023-32-14-18
Abstract
The article discusses the possibilities of functional assessment of the state of the respiratory function of the lungs in patients with bronchial asthma.
The purpose of the study: a comparative assessment of the information content of capnometry, spirometry, the method of multiple breath nitrogen washout and the diffusion test in patients with asthma.
Results and conclusions: 2 groups of patients were examined: I — 30 patients with asthma of 3–4 degrees of severity, II — 30 healthy volunteers. Capnometry showed a statistically significant increase in the slope of the alveolar phase in patients with asthma compared to the control group with quiet breathing, both before and after the use of a bronchodilator. According to spirometry data, in patients, the FEV1 /FVC ratio was statistically significantly lower compared to the control group, both before and after bronchodilator use. In a comparative analysis of the diffusion capacity of the lungs, there was a trend towards lower DLCO values in patients with asthma. A statistically significant difference was obtained in relation to the lung clearance index between the group of patients with asthma and the control group, in which the index was significantly lower. There were no statistically significant differences between the FRC (%) estimates obtained using the diffusion test and the method of the multiple breath nitrogen washout in patients with asthma. Thus, the informative methods in patients with asthma were not only the method of spirometry, but also the method of capnometry and the method of multiple breath nitrogen washout, which revealed uneven ventilation and distribution of ventilation-perfusion ratios in the lungs.
About the Authors
A. I. MikhailovichevaRussian Federation
Mikhailovicheva Anna.I., specialist of functional diagnostics department of Department of Functional and Ultrasound Diagnostics
Moscow.
V. V. Smirnov
Russian Federation
Smirnov Vladimir.V., MDs, Professor, Head of the Department of Therapy of the Academy of Postgraduate Education
Moscow.
Moscow.
P. V. Struchkov
Russian Federation
Struchkov Pyotr V., MD, Professor, Head of the Department of Clinical Physiology and Functional Diagnostics; Deputy Head of Diagnostic Departament
Moscow.
N. S. Nosenko
Russian Federation
Nosenko Natalia.S., Ph.D., Head of the Department of Functional and Ultrasound Diagnostics; Associate Professor of the Department of Radiology and Ultrasound Diagnostics
Moscow.
A. G. Sotnikova
Russian Federation
Sotnikova Anna.G., Ph.D., Head of Pulmonology Department
Moscow.
E. O. Dyachkova
Russian Federation
Dyachkova Elizaveta.O., pulmonologist
Moscow.
T. I. Divakova
Russian Federation
Divakova Tatiana. I., pulmonologist
Moscow.
Yu. A. Bazhenova-Bessonova
Russian Federation
Bazhenova-Bessonova Yulia A., head of the department of functional diagnostics
Moscow.
I. A. Manichev
Belarus
Manichev I. A., Ph.D., Head of Belintelmed LLC
Minsk.
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Review
For citations:
Mikhailovicheva A.I., Smirnov V.V., Struchkov P.V., Nosenko N.S., Sotnikova A.G., Dyachkova E.O., Divakova T.I., Bazhenova-Bessonova Yu.A., Manichev I.A. The study of respiratory function of the lungs in patients with Bronchial Asthma. Medical alphabet. 2023;(32):14-18. (In Russ.) https://doi.org/10.33667/2078-5631-2023-32-14-18