Comparative analysis of the diagnostic significance of heart failure markers in comorbid patients with atrial fibrillation and chronic obstructive pulmonary disease

Abstract

Objective:to assess the diagnostic significance of atrial and brain natriuretic peptides for the detection of chronic heart failure in comorbid patients with atrial fibrillation and chronic obstructive pulmonary disease.Materials and methods:120 patients depending on the presence of chronic obstructive pulmonary disease (COPD), chronic heart failure (CHF) and atrial fibrillation (AF) were divided into the following groups: I group (n=28) — patients with COPD without cardiovascular disease (CVD), II group — patients with CHF and COPD without AF (n=30), III group — patients with CHF and AF without COPD (n=33), IV group — patients with CHF, AF and COPD (n=29). Th e concentration of precursors of brain and atrial natriuretic peptides (NUP) (NT-proBNP and MR-proANP) was evaluated.Results:The level of NT-proBNP exceeded the reference values in all patients with CHF (I, II, III groups). In patients with CHF, AF and COPD the highest values of NT-proBNP concentrations were obtained, which were 2.2 times higher in the group of patients with CHF and COPD without AF (p=0.000) and 1.9 times higher in patients with CHF and AF without COPD (p=0.01). Comparative analysis of the MR-proANP level allowed to judge a higher concentration of this indicator in patients with CHF and COPD without COPD in comparison with the level of the marker in the groups of patients with CHF, AF and COPD (p=0.001), CHF and COPD without AF (p=0.000) and COPD without CVD (p=0.000).Conclusions:in patients with AF and COPD, the study of brain NUP NT-proBNP in connection with structural and functional changes of the right ventricle, against the background of existing cardiac arrhythmias and pulmonary pathology is preferable to determine the presence and severity of CHF. The elevated level of MR-proANP is of diagnostic value in patients with AF and CHF without COPD, due to the increased volume load on the Atria due to the presence of AF.