What is the best way to keep the patient warm during technical rescue? Results from two prospective randomised controlled studies with healthy volunteers

Autor: Martin Lier, Christopher Jebens, Annette Lorey-Tews, Tim Heyne, Nils Kunze-Szikszay, Johannes Wieditz, Anselm Bräuer
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: BMC Emergency Medicine, Vol 23, Iss 1, Pp 1-15 (2023)
Druh dokumentu: article
ISSN: 1471-227X
DOI: 10.1186/s12873-023-00850-6
Popis: Abstract Background Accidental hypothermia is a manifest problem during the rescue of entrapped victims and results in different subsequent problems as coagulopathy and wound infection. Different warming methods are available for the preclinicial use. However, their effectiveness has hardly been evaluated. Methods In a first step a survey among German fire brigades was performed with questions about the most used warming methods. In a second step two crossover studies were conducted. In each study two different warming method were compared with forced air warming – which is the most frequently used and highly effective warming method in operation rooms (Study A: halogen floodlight vs. forced air warming; Study B: forced air warming vs. fleece blanket). In both studies healthy volunteers (Study A: 30 volunteers, Study B: 32 volunteers) were sitting 60 min in a cold store. In the first 21 min there was no subject warming. Afterwards the different warming methods were initiated. Every 3 min parameters like skin temperature, core body temperature and cold perception on a 10-point numeric rating scale were recorded. Linear mixed models were fitted for each parameter to check for differences in temperature trajectories and cold perception with regard to the different warming methods. Results One hundred fifty-one German fire brigades responded to the survey. The most frequently used warming methods were different rescue blankets (gold/silver, wool) and work light (halogen floodlights). Both studies (A and B) showed significantly (p
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