Final answer:
When an AED detects ventricular fibrillation, the immediate step is to deliver a shock. An AED guides the user through the process and can increase survival odds in severe cardiac emergencies.
Step-by-step explanation:
After the AED pads are attached to the victim's bare chest and the AED detects ventricular fibrillation, the next step is to deliver a shock. An automated external defibrillator (AED) is a device designed for use by laypersons to treat life-threatening cardiac arrhythmias through defibrillation. It applies a shock with appropriate energy and waveform automatically after diagnosing the heart's condition. AEDs are capable of guiding a user through the process with verbal instructions and are commonly found in public spaces and on ambulances. In cases of ventricular fibrillation, which is a severe medical emergency where the heart beats in an uncontrolled manner, quick defibrillation is crucial to reestablish a normal sinus rhythm and can significantly increase the chances of survival.
CPR (cardiopulmonary resuscitation) is recommended before the use of an AED, as it can maintain circulation to vital organs until the AED is ready to use. However, once the device advises a shock, it should be delivered immediately, followed by continued CPR if necessary.