Effectiveness of Heat Donation Through the Head or Torso on Mild Hypothermic Rewarming
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 7
- 试验地点
- 2
- 主要终点
- Rate of body core rewarming
研究概览
简要总结
The study will compare the rewarming effectiveness of heat donation through the head or the torso during rewarming of mildly hypothermic subjects. Warming will be accomplished through either forced-air warming or using a charcoal heater; both units are commonly used for warming. The investigators hypothesize that head warming will be as, or more, effective compared to
详细描述
Dr. Gordon Giesbrecht is studying/comparing the effectiveness of heat donation through the head or the torso in rewarming a mildly hypothermic individual. A rigid forced-air warming cover for the head or the torso will be used to rewarm the hypothermic individuals.
Subjects will be asked to participate in three experimental trials, separated by at least 48 hours. Each trial will last about 4 hours (1 hour for setup, 1 hour for cooling, and 2 hours for rewarming and removal of instrumentation).
On each of the three trials, subjects will undergo immersion to the level of the sternal notch in a tank of 8˚C water for up to 60 minutes. They will then exit the water, be dried off and lie in a hooded sleeping bag with the head inside the hood where one of the three warming procedures will be administered for 60 minutes or until core temperature returns to normal values ( ̴ 36.5-37˚C).
A. Spontaneous rewarming (Shivering Only) - In this control condition, no external heat will be provided and you will rewarm spontaneously with the heat produced from shivering.
B. Head Warming (Head): Either of these rewarming methods will be used:
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •18-45 yrs old, males or females, healthy
排除标准
- •cardiopulmonary disease
- •any symptoms caused by cold exposure
结局指标
主要结局
Rate of body core rewarming
时间窗: 60 minutes
Esophageal temperature will be used to determine the rate of core temperature rewarming during 60 minutes of rewarming via either shivering only, or external heat donated to the torso or the head.
次要结局
未报告次要终点
研究者
Dr.Gordon Giesbrecht
Professor
University of Manitoba