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目的 探讨体重指数(BMI)对择期腹腔镜胆囊切除术围术期患者体温的影响.方法 选取2014年3月～2016年5月内蒙古医科大学附属医院手术科室100例术前无用药史的行择期腹腔镜胆囊切除术围术期患者为研究对象,依据BMI指数分为4组,即组I(n=25):BMI＜ 25 kg/m2;组Ⅱ(n=25):25 kg/m2≤BMI＜40 kg/m2;组Ⅲ(n=25):40 kg/m2≤BMI＜50 kg/m2;组Ⅳ(n=25):BMI≥ 50 kg/m2.麻醉方式为常规麻醉.从诱导麻醉开始,每间隔5 min对患者进行鼓膜及平均皮肤温度(MST)、平均体温(MBT)、血管收缩时间、血管收缩温度阈值测定.结果 与组T患者的鼓膜温度相比,组Ⅱ患者在诱导麻醉后5、10、15、20、45、55、60 min时增高,组Ⅲ患者在诱导麻醉后5、10、15、20、40、45、50、55、60 min时增高,组Ⅳ患者在诱导麻醉后5、10、15、20、25、30、45、50、55、60 min时增高,差异均有统计学意义(均P＜ 0.05).而各组患者在MST、MBT方面差异无统计学意义(P＞0.05).与组T患者比较,组Ⅲ及组Ⅳ患者出现血管收缩时间更晚,且阈值更高,差异有统计学意义(P＜0.05).结论 麻醉状态下,BMI高的患者较BMI低的患者更有利于稳定中心体温,从而消除麻醉对于体温的不良影响.“,”Objective To discuss the influence of body massindex (BMI) on the body temperature during the perioperative period of laparoscopic cholecystectomy.Methods 100 patients in Surgical Department,the Affiliated Hospital of Inner Mongolia Medical University scheduled to undergo laparoscopic cholecystectomy with no premedication were included in the study from March 2014 to May 2016.The patients were divided into 4 groups according to BMI,group Ⅰ (n=25):BMI＜25 kg/m2;group Ⅱ (n=25):25 kg/m2≤BMI＜40 kg/m2;group Ⅲ (n=25):40 kg/m2≤BMI＜50 kg/m2;group Ⅳ (n=25):BMI ≥ 50 kg/m2.Anesthesia was provided with routine t echniques.Tympanic and peripheral temperatures were recorded every 5 minutes starting wit h the induction of a nesthesia.The mean skin temperature (MST),mean body temperature (MBT),vasoconstriction time,and vasoconstriction threshold that triggers core warming were calculated.Results Compared to gro up Ⅰ,the tympanic temperatures were significantly higher in those of group Ⅱ in the 5,10 15,20,45,55,60 min after induction of anesthesia,and group Ⅲ in the 5,10,15,20,40,45,50,55,60 min after induction of anesthesia,and group Ⅳ in the 5,10,15,20,25,30,45:50,55,60 min after induction of anesthesia,with statistically significant differences (P ＜ 0.05).There were no significant differences in terms of MST and MBT amgng the four groups (P ＞ 0.05) And then compared to group Ⅰ,group Ⅲ and group Ⅳ patients presented the later vasoconstriction,higher vasoconstriction threshold,with statistically significant differences (P ＜ 0.05).Conclusion Under anesthesia,the core temperature is protected more easily in patients with higher BMIs.Therefore,the higher BMIs decrease the negative effects of anesthesia on thermoregulation.