One practical point in the 2025 AHA adult BLS guidance is that resuscitation should generally be performed where the patient is found, as long as high-quality CPR can be given safely and effectively. That means rescuers usually should not waste precious time moving an adult in cardiac arrest before starting CPR.

This guidance supports a faster response. In real life, every delay costs oxygen delivery to the brain and heart. If the scene is safe, the priority is to begin effective chest compressions and use an AED as soon as possible rather than spending time trying to reposition the victim somewhere else.

References
American Heart Association. Part 7: Adult Basic Life Support.