In CPR, what does the acronym AED stand for?

The correct answer is 'Automated External Defibrillator.' This term refers to a medical device designed to diagnose life-threatening cardiac arrhythmias and deliver an electric shock, if necessary, to restore a normal heart rhythm. The emphasis on "automated" highlights the device's ability to analyze a patient's heart rhythm and instruct the user on when to deliver a shock, making it accessible for use by both trained and untrained individuals.

The term "external" indicates that the device is applied to the exterior of the patient's body, as opposed to internal defibrillation, which would involve more invasive procedures. The use of external pads allows for quick and efficient delivery of therapy, which is critical during cardiac emergencies.

In contrast, other options include variations of terminology that are incorrect or less commonly recognized. For instance, "automated emergency device" and "advanced emergency defibrillator" lack specificity and are not standard terms used in CPR and emergency cardiac care. Additionally, "automatic external defibrillator" has an incorrect descriptor, as it should be 'automated,' aligning with industry standards and terminology that emphasize its diagnostic and decision-making capabilities.