Abstract
Objective: The aim of this study was to examine, under field conditions, what impact additional insulation on a spine board would have on thermoregulation. Methods: The study was conducted outdoors, under field conditions in February in the north of Sweden. The subjects, all wearing standardized clothing, were immobilized on non‐insulated (n = 10) or insulated (n = 9) spine boards. Tympanic temperature as well as the subjects' estimated sensation of cold and their estimated level of shivering were measured at 5‐min intervals during the trial. Statistical analysis of the data gathered for the first 55 min was performed. Results: There were no differences between the two groups regarding reduction in body core temperature or cold discomfort. There was, however, a statistically significant increase in estimated shivering for the subjects placed on non-insulated spine boards. Conclusion: Additional insulation on a spine board by means of an insulation mat rendered a significantly reduced need for shivering in a cold environment. This is an effect that could be of great importance during protracted evacuations of injured, ill or otherwise compromised patients. In the light of these results we conclude that spine boards, as well as other materials used for prehospital transportation of patients in cold environments, should be well insulated. This is a measure that could be accomplished by such simple means as using an additional insulation mat.