An AED (Automated External Defibrillator) is a portable medical device used to treat people experiencing sudden cardiac arrest (SCA). Sudden cardiac arrest occurs when the heart stops beating effectively due to a life-threatening arrhythmia (irregular heartbeat), such as ventricular fibrillation.

The primary function of an AED is to deliver a shock (defibrillation) to the heart, which can restore its normal rhythm. Here’s a breakdown of how an AED works:

Key Features of an AED:

1. Portable Design: AEDs are designed to be easy to use and portable, making them suitable for use in public spaces, schools, offices, airports, and homes.
2. Automated Process: AEDs are automated, meaning they analyze the heart’s rhythm and, if necessary, deliver a shock. The user is guided through each step with clear, spoken instructions.
3. User-Friendly: AEDs are built to be used by non-medical professionals with minimal training. They guide the user with prompts, such as “Place pads on the patient’s chest” or “Shock advised.”
4. CPR Integration: Most AEDs will also provide instructions for CPR (Cardiopulmonary Resuscitation) if needed.