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  • Title: Forced air speeds rewarming in accidental hypothermia.
    Author: Steele MT, Nelson MJ, Sessler DI, Fraker L, Bunney B, Watson WA, Robinson WA.
    Journal: Ann Emerg Med; 1996 Apr; 27(4):479-84. PubMed ID: 8604866.
    Abstract:
    STUDY OBJECTIVE: To compare the rates of rewarming of forced-air and passive insulation as a treatment for accidental hypothermia. METHODS: We carried out a prospective, randomized clinical trial in two urban, university-affiliated emergency departments. Our subjects were 16 adult hypothermia victims with core temperatures less than 32 degrees C. A convective cover inflated with air at about 43 degrees C (forced-air group) or cotton blankets (control group) were applied until the patient's core temperature reached 35 degrees C. Members of both groups were given IV fluids warmed to 38 degrees C and warmed, humidified oxygen at 40 degrees C by inhalation. RESULTS: The mean +/- SD initial temperature was 28.8 degrees +/- 2.5 degrees C (range, 25.5 degrees C to 31.9 degrees C) in the patients who underwent forced-air rewarming and 29.8 degrees +/- 1.5 degrees C (range, 28.2 degrees C to 31.9 degrees C) in those given blankets. Core temperature increased about 1 degree C/hour faster in patients treated with forced-air rewarming (about 2.4 degrees C/hour) than in patients given only cotton blankets (about 1.4 degrees C/hour, P = .01). Core-temperature afterdrop was detected in neither group. CONCLUSION: Forced air accelerated the rate of rewarming without producing apparent complications in hypothermic patients.
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