For what purpose is an Automated External Defibrillator (AED) primarily used?

An Automated External Defibrillator (AED) is primarily used to treat cardiac arrest, which is a critical condition where the heart suddenly stops beating effectively. In such situations, the heart can enter a potentially lethal rhythm, commonly known as ventricular fibrillation. The primary purpose of an AED is to deliver an electric shock to the heart, which can help restore normal rhythm by interrupting the chaotic electrical activity. This intervention is crucial because, without immediate treatment, a person experiencing cardiac arrest will be at risk of death within minutes.

The other options do not align with the main function of an AED. Monitoring heart activity, assisting individuals in fainting, and clearing an obstructed airway involve different medical devices, techniques, or interventions that are not the focus of what an AED is designed to do. These alternatives represent various medical responses but do not pertain directly to the life-saving capability of delivering defibrillation in cases of cardiac arrest.