What is the purpose of targeted temperature management after cardiac arrest, and when is it indicated?

• A. To improve neurological outcomes in comatose patients after ROSC; indicated for eligible adults without contraindications
• B. To prevent fever only
• C. To normalize heart rate
• D. To rapidly restore pulse

Answer: (A)

Targeted temperature management aims to protect the brain after a cardiac arrest by cooling the body to a controlled temperature, which lowers cerebral metabolic demand and reduces reperfusion injury, inflammation, and excitotoxic damage. This neuroprotective approach improves the chance of meaningful neurological recovery in patients who remain comatose after return of spontaneous circulation.

It is indicated for eligible adults who are not awake or able to follow commands after ROSC, provided there are no contraindications. In practice this means applying controlled cooling to a target range (commonly 32-36°C) for a period such as 24 hours, with careful monitoring and support (including sedation and shivering control, electrolyte management, and gradual rewarming) to optimize neurologic outcome.

The other ideas—preventing fever alone, normalizing heart rate, or rapidly restoring pulse—do not capture the primary purpose or the clinical indication of targeted temperature management. Fever prevention is a beneficial effect, but the main goal is neuroprotection. It does not directly regulate heart rate, and it does not by itself reestablish circulation or rapidly restore a pulse.