AI Article Synopsis
- The study aimed to understand the effects of head and face insulation on cooling rates during simulated avalanche burial.
- Nine subjects experienced burials with and without insulation for an hour each, using three different temperature measurement methods: esophageal probe, ingestible capsule, and rectal probe.
- Results showed no significant difference in cooling and rewarming rates between the two conditions, indicating that insulation did not provide protection, and all measurement methods were well correlated, suggesting ingestible capsules could be a useful noninvasive option for future studies.
Article Abstract
Objectives: Avalanche victims are subjected to a number of physiological stressors during burial. We simulated avalanche burial to monitor physiological data and determine whether wearing head and face insulation slows cooling rate during snow burial. In addition, we sought to compare 3 different types of temperature measurement methods.
Methods: Nine subjects underwent 2 burials each, 1 with head and face insulation and 1 without. Burials consisted of a 60-minute burial phase followed by a 60-minute rewarming phase. Temperature was measured via 3 methods: esophageal probe, ingestible capsule, and rectal probe.
Results: Cooling and rewarming rates were not statistically different between the 2 testing conditions when measured by the 3 measurement methods. All temperature measurement methods correlated significantly.
Conclusions: Head and face insulation did not protect the simulated avalanche victim from faster cooling or rewarming. Because the 3 temperature measurement methods correlated, the ingestible capsule may provide an advantageous noninvasive method for snow burial and future hypothermia studies if interruptions in data transmission can be minimized.
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| http://dx.doi.org/10.1016/j.wem.2014.07.003 | DOI Listing |
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