Targeted temperature management: It is not yet time to change your target temperature

Area of Science:

• Cardiology
• Critical Care Medicine
• Neurology

Background:

• Out-of-hospital cardiac arrest (OHCA) survivors often experience neurological deficits.
• Targeted temperature management (TTM) is a common post-resuscitation therapy.
• Previous guidelines recommended cooling to 32°C-34°C, but optimal temperature is debated.

Purpose of the Study:

• To compare the efficacy of TTM at 33°C versus 36°C in unconscious OHCA patients.
• To evaluate the impact of different TTM targets on mortality and neurological outcomes.

Main Methods:

• Randomized controlled trial involving unconscious adult OHCA patients.
• Patients were assigned to TTM at 33°C or 36°C for 24 hours.
• Primary outcomes included mortality and neurological function at 6 months.

Main Results:

• No significant difference in mortality between the 33°C and 36°C groups.
• Neurological outcomes were similar in both temperature groups.
• Adverse events were comparable across both TTM strategies.

Conclusions:

• TTM at 36°C is not inferior to 33°C for unconscious OHCA patients.
• Maintaining a higher target temperature of 36°C appears to be a safe and effective alternative.
• These findings may influence future post-cardiac arrest care guidelines.