Abstract
The purpose of this study was to determine the blood concentration of sST2 and evaluate the correlations between sST2 and the clinical, instrumental, and echocardiographic characteristics of patients with CHFrEF (chronic heart failure with reduced ejection fraction) and CHFpEF (chronic heart failure with preserved ejection fraction), as well as to evaluate the sST2 informativeness in comparison with NT-proBNP. The study involved 160 patients diagnosed with CHF (86 men and 74 women, mean age of 72.4±8.7 years). According to the LVEF value, the patients were divided into two groups: CHFpEF (EF≥50%) was recorded in 69 people, CHFrEF (EF<50%) - in 91 people. The functional class (FC) of CHF was determined according to the NYHA classification (1994). NT-proBNP and hs-CRP levels had a stronger positive association with sST2 levels in CHFrEF patients than in CHFpEF patients. The results obtained (regardless of the EF) indicated a statistically significant direct correlation between the levels of sST2 and LAVI. The weak direct correlation between sST2 and NYHA FC, in contrast to the direct strong correlation between NT-proBNP and sST2, indicates that sST2, which is quite important both for determining the current state of the patient and for predicting the course of the disease, still cannot be used as a single and universal indicator. In this regard, further comprehensive study of the diagnostic and prognostic capabilities of the sST2 and NT-proBNP biomarkers in CHF patients with different EF is required.
Published Version
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