Preventing hyperthermia: a cross-over study comparing two negative pressure devices during continuous passive heat...

Area of Science:

• Environmental Health
• Physiology
• Medical Devices

Background:

• Heatwaves cause significant increases in heat-related illness and mortality.
• Out-of-hospital interventions to prevent hyperthermia are crucial for managing heat stress.
• Negative pressure devices are a potential method for treating heat-related conditions.

Purpose of the Study:

• To compare the efficacy of two negative pressure cooling devices, CoreControl (CC) and ThermoTube (TT), in preventing hyperthermia.
• To evaluate the impact of these devices on core body temperature during passive heat exposure.

Main Methods:

• A prospective cross-over study involving nine healthy volunteers.
• Subjects were exposed to passive heat stress in a climatic chamber with high temperature and humidity.
• Treatment with either CC or TT commenced after 60 minutes of warming, with core temperature monitored.

Main Results:

• Core temperature continued to rise during treatment with the CoreControl device.
• The ThermoTube device resulted in a slight drop and subsequent stabilization of core body temperature.
• Significant differences in the efficacy of the two devices were observed in preventing hyperthermia.

Conclusions:

• The ThermoTube device demonstrated effectiveness in mitigating core body temperature rise during heat stress.
• CoreControl did not show a similar benefit in preventing hyperthermia in this study.
• Further research into negative pressure devices for heat stress management is warranted.