Heart Rhythms: The short answer is: when they pass out and can't or won't come to. At that point, there's a decent chance they're having a fatal heart rhythm which can only be corrected by a defibrillator. An AED is just a particularly easy to use type of defibrillator.
Answered 6/10/2014
5.1k views
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question