An AED will not shock a stopped heart. If they are doing compressions, there is NO rhythm. If there is a bad rhythm the AED will shock into normal rhythm. Otherwise it will tell you to do compressions until some kind of rhythm is detected.
Wrong. if they are doing compressions there is no circulation. There can be any number of rhythms underlying the cardiac arrest. Some the AED will shock some it won’t It will not shock asystole or PEA it will shock v tach or v fib IF it correctly detects them.