When is the use of an Automated External Defibrillator (AED) indicated?

The use of an Automated External Defibrillator (AED) is indicated during cardiac arrest when the patient presents with a shockable rhythm, specifically ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT). These arrhythmias are life-threatening and can be treated effectively with defibrillation to restore a normal heart rhythm. The AED is designed to analyze the heart's rhythm and determine whether a shock is needed, making it a critical tool in the chain of survival for patients experiencing sudden cardiac arrest.

The other options do not align with the appropriate use of an AED. For example, an AED is not indicated for patients with a non-shockable rhythm; therefore, immediate defibrillation would not be effective in such cases. Additionally, there is no requirement to perform CPR for a specific duration, like 10 minutes, before using an AED, as early defibrillation is crucial for improving survival rates. An AED can also be utilized by trained bystanders, not just healthcare professionals, demonstrating its accessibility and importance in emergency settings.