Surface Body Temperature and Thermoregulation After Cardiac Arrest

Area of Science:

• Critical Care Medicine
• Thermoregulation Research
• Post-Cardiac Arrest Care

Background:

• Therapeutic hypothermia is crucial for comatose cardiac arrest survivors.
• Accurate temperature monitoring is essential for effective treatment.
• Understanding surface vs. core body temperature differences is vital.

Purpose of the Study:

• To measure surface body temperatures (SBT) in comatose cardiac arrest survivors.
• To determine rewarming patterns following surface cooling.
• To compare SBT with core body temperature (CBT) and analyze regional rewarming rates.

Main Methods:

• Prospective study conducted in two phases (April-May 2016, Dec 2017-March 2018).
• Phase 1: Measured SBT at admission (t0) and 10 minutes later (t10).
• Phase 2: Measured SBT and changes after local cooling during targeted temperature management maintenance.

Main Results:

• SBT was consistently lower than CBT across all measured body regions and time points.
• No significant difference in rewarming rates between head, thorax, and abdomen post-cooling.
• Peripheral regions (legs) exhibited significantly slower rewarming rates compared to central regions.

Conclusions:

• Comatose cardiac arrest survivors exhibit lower SBT compared to CBT.
• Core body temperature (CBT) measurement is critical for accurate assessment.
• Central body regions demonstrate higher SBT and faster rewarming rates after local cooling than peripheral regions.