When should you use an AED during adult CPR?

Using an Automated External Defibrillator (AED) is most appropriate when the victim is unconscious, not breathing, and has no pulse. This scenario indicates that the individual is in cardiac arrest and requires immediate intervention to restore normal heart rhythm. The AED works by delivering a shock to the heart, which can potentially revive the patient if used promptly and effectively.

In this context, it's important to recognize the urgency of the situation with a victim in cardiac arrest. Initiating the use of an AED alongside CPR can significantly increase the chances of survival. The device is designed to analyze the heart's rhythm and determine if a shock is necessary, making it a critical tool in emergency cardiac care.

In contrast, situations where the victim is conscious, breathing, or responsive do not warrant the use of an AED, as immediate defibrillation is not indicated when the heart is still functioning adequately.