NPPB and anemia: Patients from the EVENT_(+) group were characterized by significantly lower values of LVEF, higher left atrial (LA) size, NYHA class III, anemia, left ventricular (LV) and right ventricular (RV) failure signs, showed greater degree of functional renal impairment, higher brain natriuretic peptide (BNP) and C-reactive protein (CRP) level and used diuretics significantly more often than the EVENT_(-) individuals.