Final answer:
An automated external defibrillator (AED) is a portable electronic device used in cardiac emergencies to deliver a large charge to a person's heart to correct abnormal heart rhythm. AEDs analyze the patient's heart condition and advise when to apply the shock. AEDs are commonly found in public places and provide verbal instructions for use in the critical first few minutes after a cardiac attack.
Step-by-step explanation:
An automated external defibrillator (AED) is a portable electronic device used in cardiac emergencies to deliver a large charge to a person's heart to correct abnormal heart rhythm. When connected properly to the victim, the AED will analyze the patient's heart condition and then advise you when to apply the shock with appropriate energy and waveform.
AEDs are commonly found in public places and are designed to be used by laypersons. They provide verbal instructions for use in the first few critical minutes after a cardiac attack. However, it is important to note that performing CPR is also recommended in many cases before using a defibrillator.