Final answer:
AEDs are critical for reviving individuals during cardiac arrest, with CPR recommended before use. Defibrillators deliver high-voltage electric shocks without causing burns, thanks to skin properties and conductive gel.
Step-by-step explanation:
The use of an automated external defibrillator (AED) is crucial in the event of a cardiac arrest. It is essential to perform CPR in many cases before using an AED. The AED is designed to diagnose the heart condition automatically and deliver a shock with appropriate energy and waveform to revive the person's heart rhythm. While many safety aspects are critical when using an AED, one aspect not related to safety is that a defibrillator does not cause serious burns. This is because the skin conducts electricity well at the high voltages delivered by defibrillators and the gel used is meant to aid in energy transfer, not for preventing burns.