Abstract
To estimate whether the stored autologous blood volume of 600ml for simultaneous bimaxillary orthognathic surgery is reasonable or not, 23 patients who underwent this surgery from October 1993 to January 1995 were studied, and the following results were obtained.
1. Compared with prephlebotomical data, hemoglobin and hematocrit values of the preoperative stage did not decrease significantly and reticulocyte did not increase significantly.
2. Compared with prephlebotomical data, total protein decreased significantly during the preoperative stage, but was restored one month after surgery.
3. Mean blood loss of simultaneous bimaxillary orthognathic surgery in our hospital was about 700 ml.
4. W e were able to avoid homologous blood transfusion, even in the patient who lost 1, 778ml of blood.
5. No abnormal laboratory data was noted one month after surgery.
