Kristensen G, Guldager H, Gravesen H
Acta Anaesthesiol Scand. 1986 May;30(4):314-6. doi: 10.1111/j.1399-6576.1986.tb02421.x.
It is important to reduce or prevent heat loss during anaesthesia, especially in patients with restricted cardiopulmonary reserves. To test a specially developed esophageal thermal tube (GK-esophageal thermal tube) for this purpose, 33 patients were randomly divided into two groups: Group A were given heat transferred to the central core during operation, using the GK-tube with circulating 41.7 degrees C warm water. Group B received no active warming. All patients were scheduled for major abdominal operation. In both groups there was a temperature fall in the induction phase. In Group B the temperature continued to fall slowly during operation, resulting in a median end-temperature of 34.9 degrees C. In Group A the temperature rose slowly after induction of heat via the tube, resulting in a median end-temperature of 36.8 degrees C in this actively warmed group. The temperature difference is significant (P less than 0.001). The median operating time was 3h 30 min in both groups. After 2 h of anaesthesia the median temperature in Group A was 36.1 degrees C and in Group B 35.0 degrees C. This difference is also significant (P less than 0.001). The described method was easy to use and without complications. We recommend this method to prevent peroperative hypothermia in all patients suspected to have limited cardiopulmonary reserves. The possible hazards and how to avoid these are described.
在麻醉期间减少或防止热量散失非常重要，尤其是对于心肺储备功能受限的患者。为了测试一种为此专门研发的食管热导管（GK - 食管热导管），33名患者被随机分为两组：A组在手术期间使用循环41.7摄氏度温水的GK导管将热量传递至身体核心部位；B组未进行主动保暖。所有患者均计划进行腹部大手术。两组患者在诱导期体温均下降。B组在手术期间体温继续缓慢下降，最终体温中位数为34.9摄氏度。A组在通过导管导入热量后体温缓慢上升，该主动保暖组最终体温中位数为36.8摄氏度。体温差异具有显著性（P小于0.001）。两组患者的手术时间中位数均为3小时30分钟。麻醉2小时后，A组体温中位数为36.1摄氏度，B组为35.0摄氏度。这种差异也具有显著性（P小于0.001）。所描述的方法易于使用且无并发症。我们建议对所有怀疑心肺储备功能有限的患者采用此方法预防术中低体温。文中还描述了可能的风险以及如何避免这些风险。
