[Intraoperative application of acute normovolemic hemodilution].

To investigate the effects of acute normovolemic hemo-dilution(ANHD) on hemodynamics and hemobiochemistry during surgery. In 30 patients(ASA Grade I-III) undergoing selective surgery, ANHD was accomplished by exchanging whole blood(8.0 +/- 2.7) ml.kg-1 with an equal volume of gelofusine after induction of anesthesia. The results showed: after ANHD, Hb, Hct and Plc levels respectively decreased by 13.8%(P < 0.05), 17.1%(P < 0.05) and 7.1%(P > 0.05), and yet kept in normal range; MAP, HR, SpO2, ECG maintained the normal level; and no significant changes were observed in the concentration of Na+, K+ and Cl-. ANHD is a safe and effective technique of autotransfusion, and can decrease or avoid the risk of disease transmission.