In using an AED during a sudden cardiac arrest, what is the correct action sequence?

• A. Turn on the AED and follow the prompts for delivering a shock if indicated.
• B. Call for help, then turn on the AED.
• C. Use the AED only after performing CPR for five minutes.
• D. Apply the AED without following prompts.

Answer: (A)

Turning on the AED and following its prompts is the best approach because the device is designed to analyze the heart rhythm and tell you whether a shock is indicated and how to deliver it. By turning it on right away, you start the guided sequence, get proper pad placement instructions, and receive clear prompts on when to stand clear, when to shock (if advised), and when to resume CPR between shocks. This minimizes delays and ensures safe, correct operation.

Other options can delay the defibrillation or ignore the device’s instructions. For example, waiting to perform CPR or delaying activation removes the real-time guidance the AED provides, and applying the pads without following prompts risks incorrect analysis or timing.