Perioperative medicine & outcomes

Heat Loss in Humans Warmed with Various Full-body Forced-air Heating Systems

AnesthesiologyPublished Randomised crossover trial

Authors' conclusion

All five forced-air warming systems transferred substantial amounts of heat. There were no statistically significant or clinically meaningful differences in cutaneous heat transfer, mean skin temperature, or thermal comfort across the systems.

Study context

Population
Healthy volunteersall completed
Participants
20 volunteers
Comparison
Five full-body forced-air warming blower and cover combinations
Primary endpoint
Heat flux, mean skin temperature, and thermal comfort
Methodological detailscontrolled clinical setting, 45-min washout, Ambient temperature averaged 20.3° ± 2.4°C
  • Controlled clinical setting
  • 45-min washout
  • Ambient temperature averaged 20.3° ± 2.4°C

Primary result

As reported in the abstract

Cutaneous heat flux, mean skin temperature, thermal comfort
  • Heat flux across all systems improved from a loss of 101 ± 53 W to a gain of 20 ± 48 W after 5 min of heating
  • Skin temperature increased to 35.5° ± 0.8°C within 15 min of warming, stable thereafter
  • No statistically significant or clinically meaningful differences in heat transfer, mean skin temperature, or thermal comfort across the systems

Original publication

Heat Loss in Humans Warmed with Various Full-body Forced-air Heating Systems. Anesthesiology. Published 20 August 2025. doi:10.1097/aln.0000000000005730

Composed by AI from the published abstract and checked against it. How Briefs are made →

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