Final answer:
CPR should be administered to a non-breathing victim who collapses suddenly before using an AED if witnessed, to maintain blood flow until an AED is used.
Step-by-step explanation:
An Automated External Defibrillator (AED) is a critical life-saving device that can be essential in the event of a cardiac emergency, such as sudden cardiac arrest. It delivers a controlled electric shock to a person's heart in an attempt to restore a normal heartbeat in cases of cardiac or ventricular fibrillation. In many cases, it is recommended to perform CPR (cardiopulmonary resuscitation) before using an AED, particularly if you witness a non-breathing victim collapse. That's because CPR helps to continue the flow of blood to the heart and brain, increasing the length of time in which a shock from an AED can be effective. After CPR has been initiated, and if the person is still non-responsive without a pulse, using an AED as soon as one becomes available is the next crucial step.