Abstract
At present, heart failure with preserved ejection fraction (HFpEF) is a commonly accepted condition in HF patients. In contrast to HF with reduced EF (HFrEF), HFpEF is strongly associated with aging, and vascular, metabolic, neurohormonal, and systemic inflammatory comorbidities. Two major hypotheses explain the pathophysiology of HFpEF (stages C,D in the American College of Cardiology Foundation/American Heart Association HF staging system): (1) impaired active relaxation and increased passive stiffness of the left ventricular (LV) myocardium during diastole (left atrial [LA]-LV coupling); and (2) LV and arterial stiffening during systole (LV-arterial coupling). Cardiac structural and functional abnormalities can be evaluated using non-invasive measures, such as 2-D, flow velocity Doppler, and tissue Doppler echocardiography, to estimate LV filling pressure and afterload mismatch. The clinical application of 2-D speckle-tracking echocardiography (2D-STE) is feasible for earlier diagnosis of functional abnormalities of the LA, LV, and elastic arteries in asymptomatic patients with cardiovascular risk factors (stages A,B). The goal of this review is to highlight the role of 2D-STE to detect impairment of LA-LV-arterial coupling beyond diastolic function earlier, because it may provide important information on the pathophysiology and prevention of HFpEF.
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