[Plasma exchange therapy in hematology].

Plasma exchange (PE) is the treatment of choice in emergencies arising in patients suffering from the hyperviscosity syndrome, factor VIII antibody haemophilia, autoimmune haemolytic anaemia or post-transfusion purpura. Apart from these clear indications, the efficacy of PE in other hematological disorders such as thrombotic thrombocytopenic purpura, immune thrombocytopenia, cryoglobulinaemia, rhesus incompatibility, autoimmune cytopenia and AB0 incompatibility with bone-marrow transplantation is less well defined. In such disorders PE can be performed when conventional treatment has failed.