Increased Adsorption Membranes During Cardiopulmonary Bypass

"oXiris® membrane set is composed of a 1.5 m2 copolymer of acrylonitrile and sodium methylsulfonate (AN 69) with polyethylenimine treated surface and adhered heparin during set´s fabrication \[oXiris® (Baxter Gambro)\].~Blood flow between 200-250 mL/min will be derivatised from the CPB circuit (arterial positive pressure line just after the oxygenator) into the PrismafleX eXeed™, so that it all flows thru the oXiris® membrane and returned to the CPB circuit into the venous reservoir just before the oxygenator. oXiris® membrane will be only employed for adsorption (neither convection nor diffusion will be performed) during all CPB time."