Process for reducing the dysfunctions of the immune and hemostatic systems during extracorporeal circulation.

Use of anti-C5 TO DECREASE dysfunctionality of the hemostatic system and immune ASSOCIATED PROCESSES extracorporeal circulation such as PROCEDURES Cardiopulmonary Bypass. It has been found that these antibodies significantly reduced SUPPLEMENTARY ACTIVATION, platelet, leucocyte PLAQUETOLEUCOCITARIA ACCESSION associated with such procedures.