Final answer:
The 2015 AHA ACLS guidelines for post-cardiac arrest care advise cooling comatose patients to 32°C-36°C for 24 hours to improve survival and neurological outcomes.
Step-by-step explanation:
The 2015 AHA ACLS guidelines for immediate post-cardiac arrest care recommend considering targeted temperature management (TTM) to optimize survival and neurological recovery in comatose patients who have achieved the return of spontaneous circulation (ROSC). The guidelines suggest that patients should be cooled to 32 degrees C to 36 degrees C for at least 24 hours. This controlled hypothermia slows down the patient's metabolic rate, reducing the demand on the heart and other organs, and potentially protecting the brain from damage caused by the cardiac arrest.