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Funding Acknowledgements Type of funding sources: None. Currently, there is no serum biomarker that is a marker of the presence of heart failure (HF) at an early stage. It is also shown that the traditional indicators used for the diagnosis diastolic dysfunction (DD) of left ventricular (LV) using echocardiography (ECG) are not informative enough. Thus, it is currently relevant to study new serum biomarkers of DD, such as sST2, as well as to study the mechanics of LV. Objective to study the relationship between mechanics of LV and the level of sST2 (bioamarker of HF) in patients with epicardial obesity (EO). Materials and methods The study included 110 men with general obesity. According to the results of echocardiography (ECG), patients were divided into 2 groups: EO (+) with epicardial fat thickness (tEAT) ≥7 mm (n = 70); EO (-) with tEAT &amp;lt;7 mm (n = 40) without diastolic dysfunction according to the results of ECG. All patients were assessed for sST2 and NT-pro-BNP levels using enzyme immunoassay. Using speckle-tracking ECG, the mechanics of LV were studied (twist LV, peak twist ratio LV, time to peak twist of LV, peak untwist ratio LV, time to peak untwist of LV). The exclusion criteria were the presence of coronary pathology, arterial hypertension, and type 2 diabetes mellitus. Results In the group patients with EO ( + ) a statistically significant increase in the level of sST2 was revealed in comparison with the group of EO (-) [21,55 ng/ml (26,52; 15,40) and 9.89 ng/ml (11.12; 7.95); p = 0.001, respectively], while the levels of NT-pro-BNP in both groups were not statistically different [211.36 pg / ml (254.0; 156.0) and 204.81 pg / ml (268.0; 157.0), respectively, p = 0.85]. When determining the parameters of DD LV by ECG, there were no statistical differences between the EO (+) and EO (-) groups [e ", cm / sec 0.09 (0.11; 0.09) and 0.09 (0.11; 0.09), respectively, p = 0.63; E/e " , units, 7.80 (8.90; 6.55) in the EO (+) and 8.53 (9.70; 7.20) in the EO group ( - ), p = 0.08; left atrial volume index, ml / sq2, in the EO group (+) 28.39 (31.25; 24.17) and in the EO group(-) 27,82 (30,21; 25,66), p = 0.55; in the EO group ( + ), the maximum speed of tricuspid regurgitation, m / sec, is 2.78 (2.9; 2.58) in the EO group(-) 2,67 (2,87; 2,41), p = 0.13]. According to the results of speckle-tracking ECG in the EO (+) group, an increase peak untwist ratio LV to -128.31 (-142.0; -118.0) deg/s-1 (p = 0.002) and an increase time to peak untwist of LV of 476.44 (510.0; 411.0) msec was determined in comparison with the EO ( - ) group (p = 0.03). A significant relationship between peak untwist ratio LV and sST2 was revealed (r = 0.37; p = 0.02). Conclusion Thus, it can be assumed that patients with EO have DD LV at the preclinical stage, which is not diagnosed using traditional ECG indicators. The serum biomarker sST2 is an early marker of the presence of HF.

european journal of preventive cardiology

Features of the relationship between the parameters of left ventricular mechanics and the level of biomarkers of heart failure in patients with epicardial obesity