[Blood transfusion and its complications in cardiovascular surgery]

In cardiovascular surgery, blood transfusions have been associated with infections (hepatitis B, C, and HIV) and immunologic reactions. To prevent transfusion complications, we should organize a transfusion guideline which indicate the appropriate timing of blood transfusion and the total amount of blood volume because a resourse of the blood product is limited. It is also very important to induce blood conservation techniques. Drugs that decrease bleeding and increase blood volume, devices that preserve blood, and autologous blood donation are most effective. Reduction of the transfusion requirement in cardiovascular surgery leads to a decreased morbidity and mortality.