Subjects will be assigned to one of four groups stratified by method of hemodynamic monitoring (ImaCor vs control hemodynamic monitoring) and frequency of hemodynamic assessments (protocolized intervals PM vs standard monitoring intervals SM). In patients randomized to echocardiography-guided hemodynamic management (ImaCorPM and ImaCorSM) the ImaCor ClariTEE system will be installed at the time of study inclusion. An ICU consultant will assess the patients' hemodynamic condition based on the hTEE information (ImaCorPM and SM) and other available hemodynamic parameters (ControlPM and SM). Any changes in hemodynamic management are recorded.