Objective To evaluate the effect of intraoperative combined forced-air warming and fluid warming system on patient’s core temperature

blood loss

transfusion demand

extubation time

and incidence of postoperative shivering. Methods Forty patients with American Society of Anesthesiologists physical status I andⅡ

aged 18-70 years

scheduled for elective abdominal surgery were randomly assigned to receive intraoperative warming from a forced-air blanket and fluid warming system or conventional cotton blanket

20 in each group. The core temperature was recorded every 20 minutes during the operation

as well as the blood loss

blood transfusion

extubation time

and incidence of postoperative shivering. Results The core temperature at the end of the surgery in the warming group was significantly different from that in the control group （36.4±0.4℃ vs. 35.3±0.5℃

P<0.001）. Application of intraoperative warming significantly shortened the time between the end of the surgery and extubation （P<0.01）. Postoperative shivering occurred in 30% of the patients in the control group compared to no patient in the warming group （P <0.01）. Conclusion Active warming with air-forced blanket and fluid warming system provides sufficient heat to prevent hypothermia during abdominal surgery.