Is it possible that im administration of narcan (naloxone) in a cardiac arrest victim be helpful?

Narcan (naloxone)....: Narcan (naloxone) reverses the effects of a narcotic overdose. So, if the cardiac arrest is thought to be due to a narcotic overdose, then Narcan (naloxone) can be tried. Whether or not it will be effective depends on many factors including how long the person has been without a heartbeat, whether CPR has been done, etc. If the brain has been without oxygen for too long, Narcan (naloxone) will not reverse this brain injury.