What is the minimum duration for cooling in targeted temperature management?

What is the minimum duration for cooling in targeted temperature management?

• A. At least 24 hours
• B. 6 hours
• C. 72 hours
• D. 1 hour

Answer: (A)

Cooling in targeted temperature management is aimed at protecting the brain after cardiac arrest by lowering metabolic demand and dampening reperfusion injury. To achieve meaningful neuroprotection, the cooled state should be kept for at least 24 hours. Maintaining a core temperature in the 32–36°C range during this period is the standard approach, with rewarming done gradually afterward to avoid complications. Shorter durations, like 1 or 6 hours, don’t reliably confer neuroprotection, while longer durations (such as 72 hours) may occur in some protocols but are not the minimum requirement.

Cooling in targeted temperature management is aimed at protecting the brain after cardiac arrest by lowering metabolic demand and dampening reperfusion injury. To achieve meaningful neuroprotection, the cooled state should be kept for at least 24 hours. Maintaining a core temperature in the 32–36°C range during this period is the standard approach, with rewarming done gradually afterward to avoid complications. Shorter durations, like 1 or 6 hours, don’t reliably confer neuroprotection, while longer durations (such as 72 hours) may occur in some protocols but are not the minimum requirement.