Abstract
Incidence of chronic heart failure (HF) is increasing steadily in all developed countries, predominantly due to population ageing. The prevalence of HF in population is 1-2%, reaching up to 10% in higher age categories.
At present HF is classified according to left ventricular ejection fraction (EF) value to HF with reduced EF (formely systolic HF) and HF with preserved EF (formely diastolic HF).