Clinical and Functional Portrait of a Patient With Chronic Obstructive Pulmonary Disease Phenotype Without Frequent Exacerbations

Abstract

Introduction. According to current data, the COPD phenotype without frequent exacerbations is frequently encountered and requires close attention. However, in the course of a literary search, it was possible to find only isolated scientific works with a generalized description of the features of this phenotype. Aim. The aim of the study is to compile a typical clinical portrait of a patient with the COPD phenotype without frequent exacerbations based on the analysis of clinical, laboratory and functional parameters. Material and methods. The study included 45 patients aged 57.2±1.1 years with a diagnosis of COPD without frequent exacerbations in age. In all patients, the concentration of proinflammatory cytokines, C-reactive protein in blood serum was determined by immunoferment analysis. Results and discussion. Males (93.3%) with a smoker index of 33.7± 2.5 packs/years and a disease duration of more than 10 years dominated the studied cohort. The average score on the CAT test was 10.32±0.05 points, on the mMRC scale more than two points. The post - bronchodilation value of FEV1 corresponded to the average severity of obstructive disorders in 91.1% of individuals. Among the examined patients, persons with bronchitic type of COPD predominated (53.3%). The concentration of inflammatory biomarkers determined in the blood serum significantly exceeded the levels of the reference values. Also, patients with COPD with the studied phenotype was found to have low adherence to treatment and dispensary observation and late visit to the doctor. Conclusions. The obtained results of the study made it possible to draw up a clinical portrait of the patient with the COPD phenotype without frequent exacerbations.