Low-intensity inflammation as a manifestation of comorbidity and a factor in the unfavorable clinical course of heart failure with preserved ejection fraction

Aim. To analyze the prognostic significance of clinical, anamnestic and paraclinical parameters in patients with heart failure with preserved ejection fraction (HFpEF) and non-obstructive coronary artery disease.Material and methods. The study included 54 patients. Cardiac and lung ultrasound was performed. In addition, the level of N-terminal pro-brain natriuretic peptide (NT-proBNP), interleukin-1β, interleukin-18, growth differentiation factor 15 (GDF-15), and cryopyrin was determined. The level of quality of life, anxiety and depression, and adherence to treatment were analyzed.Results. The patients were divided into 2 following groups: group 1 (n=22) with an unfavorable course and group 2 (n=32) with a favorable disease course. Basic echocardiographic parameters, as well as the number of B-lines in lungs, were comparable in both groups. An unfavorable HFpEF course was associated with a longer history of hypertension — 17,5 [10;20] and 7 [5;15] years (p=0,03), smoking — 36,4 and 9,4% (p=0,035), impaired carbohydrate metabolism — 54,5 and 15,6% (p=0,003) and lower adherence to treatment (p=0,02). In group 1, GDF-15 levels were higher than in group 2 — 1841 [1237;3552] vs 1709,5 [1158;2492] pg/ml (p=0,026).Conclusion. Low-intensity subclinical inflammation, the predisposing factors of which are smoking, impaired carbohydrate metabolism, and a long history of hypertension, is associated with higher GDF-15 values in patients with HFpEF and, along with low patient adherence to treatment, has an adverse effect on the clinical course of heart failure.