For all 3 groups, a physical examination was carried out. This included medical history, ECG and echocardiog-raphy. The following parameters were investigated in the blood plasma immediately after collection (Li-He): cTnI (Siemenes, Centaur), NT-proBNP (Siemenes, Cantaur), CRP (Siemens, Advia 1800), creatinine (Siemens, Advia 1800), ALT (Siemens, Advia 1800), AST (Siemens, Advia 1800), bilirubin (Siemens, Advia 1800), Na, K, Cl (Siemens, Advia 1800) ), at the same time, aliquots of blood samples were frozen at -80 °C. Visfatin was measured from these samples (BioVendor, ELISA, Czech Republic).
Statistcal analysis was cared out using the Medcalc program (Belgium). In addition to descriptive statisticsan ROC analysis was performed.