The prospective, interventional, randomised controlled and blinded ECMOsorb study investigates in critically ill patinets with cardiogenic shock and with veno-arterial ECMO (VA-ECMO) treatment the impact of an extracorporeal cytokin hemadsorption system on hemodynamics, defined by the Inotropic Score 72 hours after initiation of the adsorber (intervention) or normal ECMO tube (control) in the VA-ECMO.