RESUMO
BACKGROUND: In the preoperative autologous blood deposit, total hemoglobin mass in one unit of autologous blood is various among the donors and the extents of hemoglobin increase following autologous transfusion may vary with the donor. Therefore, the authors intended to establish the standard of collection volume in preoperative autologous blood deposit, in order to warrant the safety of donor and gain the efficient increase of hemoglobin. METHODS: We performed a study of the following on 236 autologous donors (116 adult males and 120 adult females): collection of fixed blood volume (320 or 400 mL), collection of fixed hemoglobin mass (40, 45, 50, and 55 g) for one unit of blood, collection of blood volume to increase as much hemoglobin as 1 g/dL following autologous transfusion. RESULTS: The most safe and efficient collection method for preoperative autologous blood deposit is the collection of 400 mL of blood or collecting blood up to 55g of hemoglobin mass for male, and up to 45g of hemoglobin mass for female in one unit. CONCLUSION: These results are considered better methods for preoperative autologous blood deposit than routine collection of 320 mL of blood volume, irrespective of gender.