In the last two to three decades, the possibility of preserving the ejection fraction (LV) of the left ventricle (LV) in patients with heart failure, which had not been discussed before, has been studied. Numerous studies conducted in recent years indicate a significant prevalence of heart failure with normal LV. With preserved LV, timely detection and adequate treatment of LV diastolic dysfunction (DD) comes to the fore, since relaxation processes change much earlier than they worsen systolic function. The determining factors in this process are active relaxation and pliability of the LV. Failure of at least one of these components leads to an increase in LV filling resistance and an increase in filling pressure, i.e., to a violation of diastolic function.The data reflecting the frequency of registration of types of diastolic dysfunction in individuals with coronary heart disease according to population-epidemiological studies are presented. The diastolic function of the left ventricle was studied in terms of transmittal blood flow, depending on the ejection fraction.

coronary heart disease; diastolic dysfunction; heart failure.

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