Clinical and Functional Phenotypes of Chronic Obstructive Pulmonary Disease, the Effect on the Severity of the Disease and Prognostic Value in Assessing the Risk of Disease Progression

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Background: Chronic obstructive pulmonary disease (COPD) is characterized by progressive limitation of airflow rate, hyperergic inflammatory response of the respiratory tract, and systemic manifestations. Prognosis of the disease depends on the severity of these pathogenetic components. FEV1 which characterizes the speed limit airflow do not allow predicting the rate of COPD progression.

Aims: comparison of the prognostic significance of such clinical parameters as frequency of exacerbations and the development of comorbid diseases to assess the nature of COPD progression by using different classification approaches.

Materials and methods: The prospective comparative study included 98 patients with COPD. In the framework of the study protocol, 2 visits were required when a practitioner recruited patients who met inclusion/exclusion criteria, obtained the signed informed consent, collected the anamnestic data, and performed basic procedures of the study: spirometry, 6-minute stepper test, assessment of dyspnea on questionnaire mMRC, body plethysmography, lung diffusion capacity study, dopplerechocardiography, tomography of the chest. Visit 2 was conducted in 12 months after the first one to assess the dynamics of the disease. The dynamics of the disease was considered negative if, upon repeated examination, the patient was referred to the group with more severe COPD.

Results: Our study demonstrates that comprehensive assessment of such factors as the frequency of COPD exacerbations in the preceding 12 months and the presence of comorbid diseases in a patient is reasonable for assessment of disease severity and determination of disease prognosis. At the same time the frequency of COPD exacerbations as one of the evaluated factors is most strongly associated with disease progression.

Conclusions: Thus, a practitioner is recommended to use the proposed additional clinical criteria to assess the severity and degree of progression of COPD.

About the authors

M. A. Karnaushkina

I.M. Sechenov First Moscow State Medical University

ORCID iD: 0000-0002-8791-2920

Moscow, Russian Federation

S. V. Fedosenko

Siberian State Medical University

Author for correspondence.
ORCID iD: 0000-0001-6655-3300

Tomsk, Russian Federation

Russian Federation

A. E. Sazonov

M.V. Lomonosov Moscow State University

ORCID iD: 0000-0001-8611-5770

Moscow, Russian Federation

V. A. Petrov

Siberian State Medical University

ORCID iD: 0000-0002-5205-9739

Tomsk, Russian Federation

A. B. Arutyunova

Clinical hospital of Central union of Russia

Moscow, Russian Federation

M. A. Maksimova

Policlinic 2 of Ministry of Economic Development of Russia


Moscow, Russian Federation

L. M. Ogorodova

Siberian State Medical University

ORCID iD: 0000-0002-2962-1076

Tomsk, Russian Federation

I. A. Deev

Siberian State Medical University

ORCID iD: 0000-0002-4449-4810

Tomsk, Russian Federation

E. S. Kulikov

Siberian State Medical University

ORCID iD: 0000-0002-0088-9204

Tomsk, Russian Federation


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