Abstract：
OBJECTIVE: This study aimed to determine the effect of a forced-air warming blanket placed on different body parts on the core temperature of patients undergoing elective open abdominal surgery.
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.
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.
摘要：
目的：本研究旨在确定放置在不同身体部位的强制加温毯对择期开腹手术患者核心温度的影响。
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.
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.
