Study design Indication for CABG surgery Excluded Included N0: Clinical characteristics, Echocardiography, NT-proBNP Hemodynamic indexes CABG ICU N1 N2 N3 N4 N5 Clinical characteristics, Echocardiography, NT-proBNP Hemodynamic indexes No LCOS LCOS Objective 1 Objective2 11 Chapter 3 RESULTS 3.1.