Written Lifeguarding Practice Test 2026 – All-in-One Lifeguard Exam Success Guide

Using an AED is appropriate when the victim is unresponsive and not breathing normally. This situation indicates a potential cardiac emergency, such as a cardiac arrest, where the heart may need assistance in resuming its rhythm. The AED analyzes the heart's rhythm and can deliver a shock if necessary to restore a normal heartbeat.

In cases where the victim is conscious, using an AED is not indicated, as the device is designed for situations where a person is unable to respond or breathe normally. Additionally, while performing CPR for a short duration prior to using an AED can be beneficial, it is important to deploy the AED right away, as every moment matters in a cardiac emergency. Lastly, even though training is essential to effectively use an AED, the device is designed to be used by anyone, including lay responders, as it provides auditory and visual prompts for usage. Therefore, the critical factor is the condition of the victim, rather than the consciousness or the training status of the lifeguard.