An AED automatically detects if a is needed. *
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An AED will automatically analyse the heart rhythm of a pulse less victim and, if the victim is in ventricular fibrillation (VF) or ventricular tachycardia (VT), shock the victim's heart in an attempt to restore its rhythm to normal. AEDs will not shock patients who do not require a shock

answer; planning ahead;

not really sure sorry just trying to get points