Abstract: Objective To observe the change of erythrocytes and hemoglobin after fractural internal fixation surgery and analyze the effect of volume of liquid infusion on peripheral blood of patients during operation. Methods The levels of red blood cells (RBCs), hemoglobin, white blood cells and platelets at 24h, 48h or 72h following operation were detected and analyzed in 8 patients. Results The number of RBCs and concentration of hemoglobin were fluctuated on 24h, 48h, and 72h post-operation. The volume of infusion on operation had impact on the RBCs count and concentration of hemoglobin due to the blood dilution within 48h-72h, which increased significantly after 24h post-operation. Conclusions The volume of fluid infusion in orthopedic patients has a diluted effect on RBCs and hemoglobin but may gradually recover after operation.

Key words: Hemoglobin, Internal fixation surgery, Red blood cells