METHODS: Prospective, single-center, randomized, controlled, single-blind trial.
METHODS: A total of 537 patients who underwent open abdominal surgery were randomized into groups A, B, and C and provided with different forced-air warming blankets. Group A was given an upper body blanket, group B a lower body blanket, and group C an underbody blanket. The incidence of intraoperative hypothermia, the time maintaining the core temperature over 36 ℃ before hypothermia, the duration of hypothermia, the rewarming rate, and relevant complications were compared among three groups.
RESULTS: Intraoperative hypothermia occurred in 51.4% of patients in group B, 37.6% of patients in group A, and 34.1% of patients in group C (P = .002). Maintaining the core temperature above 36 ℃ was longer before hypothermia in groups A and C (log-rank P = .006). In groups A and C, the duration of hypothermia was shorter, the rewarming rate was higher, and the incidence of shivering and postoperative nausea and vomiting were lower, compared to group B.
CONCLUSIONS: In patients undergoing elective open abdominal surgery, a forced-air warming blanket on the upper body part or underbody area decreased intraoperative hypothermia, prolonged the time to maintain the core temperature above 36 ℃ before hypothermia, and could better prevent further hypothermia when the core temperature had decreased below 36 ℃. In addition, it was significantly superior in reducing shivering and postoperative nausea and vomiting in the postanesthesia care unit.
方法:前瞻性,单中心,随机化,控制,单盲试验。
方法:将537例开腹手术患者随机分为A组,B,和C,并配有不同的强制空气变暖毯。A组给予上半身毯子,B组下半身毯子,和C组一个车底毯子。术中低体温的发生率,体温过低之前保持核心温度超过36℃的时间,体温过低的持续时间,复温率,比较3组并发症发生情况。
结果:B组51.4%的患者发生术中低体温,A组37.6%的患者,和34.1%的患者在C组(P=0.002)。在A组和C组中,保持核心温度在36℃以上的时间在低温之前更长(log-rankP=.006)。在A组和C组中,体温过低的持续时间较短,复温率较高,寒战和术后恶心呕吐的发生率较低,
结论:在接受择期开腹手术的患者中,上身部分或下身区域的强制加温毯减少了术中体温过低,延长了体温过低之前维持36℃以上的时间,当核心温度降至36℃以下时,可以更好地防止进一步的低温。此外,在减轻麻醉后监护室的寒战和术后恶心和呕吐方面明显优于对照组.