Final answer:
Ventricular fibrillation is a life-threatening condition characterized by uncontrolled electrical activity in the ventricles of the heart. Defibrillation is the most common treatment, and external automated defibrillators (EADs) can be used by nonmedical personnel in emergencies.
Step-by-step explanation:
Ventricular fibrillation is a medical emergency characterized by rapid and uncontrolled electrical activity in the ventricles of the heart, which disrupts its ability to pump blood effectively. If left untreated, ventricular fibrillation can lead to brain death in just a few minutes. The most common treatment for ventricular fibrillation is defibrillation, which involves the use of special paddles to deliver an electrical shock to the heart in an attempt to restore a normal rhythm.
External automated defibrillators (EADs) are devices that can be used by nonmedical personnel in areas frequented by large numbers of people, such as schools, restaurants, and airports. These devices provide simple and direct verbal instructions to guide the user in delivering a shock to the heart when ventricular fibrillation is detected.