Bleeding, Shock and Soft-Tissue Injuries X From Brady's First Responder (8th Edition) Progress Indicator: Question 2 of 18 2.  Are AEDs effective on a heart with no electrical activity (asystole) or pulseless electrical activity (PEA)? Choices: Yes, without exception or modification of technique Yes, but pads need to be reversed Yes, but a higher charge is required Yes, but for another reason No