[Perioperative transfusion strategy].

Tactics in blood transfusion have evolved considerably during the last ten years. Awareness of infectious risks and economic considerations have lead legislators to draw the guidelines for a safer transfusion. Their aim is to promote a better transfusion in smaller quantities at a lower risk. The goal of perioperative blood replacement is to maintain hemoglobin, blood volume and coagulation factors at an adequate level. This can be carried out by either homologous or autologous transfusion. Fresh frozen plasma transfusion is only required in severe bleeding where coagulation factors are depleted. The plasma substitutes must be used according to their intrinsic properties and their cost. The choice of an autologous technique depends on the type of surgical procedure, the expected blood loss and the economic resources available. Autologous blood transfusion may be optimized by the association of various techniques. This transfusion strategy must be elaborated by all the medical protagonists implicated in transfusion procedures.