What is an Automated External Defibrillator (AED) and what is it used for?

• A. Automated External Defibrillator and Defibrillation in the event of cardiac arrest.
• B. Automatic External Device and Defibrillation for chest compressions.
• C. Aircraft Evacuation Device for heart monitoring.
• D. Advanced External Diagnostic device for vital signs.

Answer: (A)

An Automated External Defibrillator is a portable device designed to treat sudden cardiac arrest by delivering a controlled electric shock to the heart when a dangerous rhythm is detected. It is automated in the sense that it analyzes the heart rhythm and guides or performs the shock, and external because the shock is delivered from pads placed on the chest rather than inside the body. The device prompts you through steps, including placing adhesive pads on the chest, ensuring no one is touching the person, and delivering a shock if advised. After a shock, or if no shock is advised, you resume CPR with chest compressions until professional help arrives or the person shows signs of life.

In practice on an aircraft, the AED is part of emergency equipment and used specifically for cardiac arrest to restore a normal rhythm as quickly as possible, which is crucial for survival. The other interpretations of the acronym don’t describe a defibrillator or its purpose, so they don’t fit the scenario of treating cardiac arrest with defibrillation.