What function does an Automated External Defibrillator (AED) serve?

An Automated External Defibrillator (AED) is a critical device used in emergency situations where individuals experience sudden cardiac arrest. Its primary function is to analyze the heart's rhythm and determine whether it is in a shockable state, which could lead to saving a life. If the device detects a lethal arrhythmia, it can deliver a controlled electric shock to the heart, aiming to restore its normal rhythm.

The device is designed to be user-friendly, often providing voice prompts to guide the operator through the process, making it accessible even to those without extensive medical training. The ease of use and clear instructions help ensure timely intervention, which is crucial in cardiac emergencies where every minute counts.

While other options relate to various health monitoring functions, they do not pertain to the primary role of an AED, which is specifically intended to address life-threatening heart rhythm abnormalities.