Diving First Aid for Professional Divers Practice Test 2026 - Free Practice Questions and Study Guide

The primary purpose of an Automated External Defibrillator (AED) is to defibrillate the heart. When a person's heart experiences a sudden cardiac arrest, it may go into a chaotic rhythm called ventricular fibrillation. An AED is designed to analyze the heart's rhythm and, if necessary, deliver an electric shock to restore a normal heart rhythm. This critical intervention can significantly increase the chances of survival if applied promptly.

While providing oxygen, assisting with breathing, and monitoring blood pressure are all important aspects of medical care, they are not the specific functions of an AED. The focus of an AED is uniquely on diagnosing heart rhythms and delivering defibrillation to correct life-threatening arrhythmias. This capability makes it a lifesaving device in emergency situations where every second counts.