What is the function of an AED?

The function of an AED, or Automated External Defibrillator, is to provide lifesaving treatment to individuals experiencing sudden cardiac arrest. It works by analyzing the heart's rhythm and, if necessary, delivering a shock to restore a normal heartbeat. AEDs are designed to be user-friendly so that they can be operated by laypersons or first responders in emergencies, even if they do not have extensive medical training.

Understanding how AEDs function is crucial for lifeguards and other responders, as timely defibrillation greatly increases the chances of survival for a person in cardiac arrest. The term "automated" emphasizes that the device is capable of assessing the heart rhythm and determining if a shock is needed, making it a vital tool in emergency response scenarios.