关键词: 腹腔镜手术, 加温二氧化碳气腹机, 体温, 寒战

Abstract: Objective: To study on the application value of warming carbon dioxide（CO2）in prevention of hypothermia in patients undergoing laparoscopic surgery.Methods: A total of 84 patients undergone the laparoscopic surgery were selected and divided into groups according to the random number table, 42 cases in each. The control group was treated with routine treatment, and the observation group was treated with the warming CO2 pneumoperitoneum machine. The operation conditions(the length of operation and the amount of intraoperative bleeding), the changes of body temperature during surgery, postoperative chill incidence, postoperative pain score (VAS), and the changes of preoperative and postoperative blood gas indexes [oxygen partial pressure(PO2), carbon dioxide partial pressure (PCO2), plasma bicarbonate (HCO3), pH value] in two groups were statistically compared. Results: There were insignificant differences in the length of operation and the amount of intraoperative bleeding（P＞0.05）. The temperature of the two groups was decreased at the beginning and the end of the operation, and the temperature of the observation group was higher than the control group at the time of 30min, 60min and 90min after the operation and at the end of the operation, and the difference was statistically significant（P＜0.05）. The incidence of chills in the observation group was 4.76%, lower than that of the control group (30.92%)（P＜0.05）. The VAS score of two groups in postoperative1h to 48h showed a decreasing trend, and the observation group was lower than the control group, and the difference was statistically significant（P＜0.05）. There were insignificant differences in PO2, PCO2, HCO3 and pH value between the observation group and the control group before and after the operation（P＞0.05）. Conclusion: The warming CO2 pneumoperitoneum machine in the laparoscopic surgery is helpful to maintain the perioperative temperature, reduce the incidence of chills, and relieve the postoperative pain.

Key words: Laparoscopic surgery, Warming carbon dioxide pneumoperitoneum machine, Body temperature, Chills