A Study of Preoperative Autologous Blood Donation Timing.

This study aims to determine the safe and effective autologous blood drawing time for preoperative autologous blood donation (PABDs) by comparing the outcome of two different schedules of PABDs. A total of 144 patients who underwent elective surgery (radical resection of digestive tract tumor, lumbarspinesurgery and Intracranial tumor resection) were retrospectively reviewed. 88 patients had donated autologous blood 2 days before the operation (group 1); 56 patients had donated autologous blood more than 3 days before the operation (group 2). Hb and Hct before the operation and on postoperative days one and three, allogeneic blood transfusions, total bleeding, postoperative length of stay, and length of stay were measured and compared. Hb at postoperative day one was lower in group 2 than in group 1 ( P  < 0.05). Furthermore, Hb in group 1 was higher at postoperative day one than at postoperative day three ( P  < 0.05). Differences in postoperative Hct, allogeneic blood transfusions, total bleeding and postoperative length of stay between these two groups were not statistically significant ( P  > 0.05)., The difference in the average number of postoperative hospitalization days between these two groups was not statistically significant ( P  > 0.05). The 2 days of PABD did not lead to any adverse recovery effect. It would be helpful to conduct preoperative autologous blood transfusions.