What condition would indicate that you should not use an AED?

When considering the use of an AED (Automated External Defibrillator), it is crucial to ensure the safety of both the victim and the rescuer. The presence of water can significantly heighten the risk of electrical shock during the defibrillation process. If a person is wet or lying in water, using an AED may pose serious dangers, as water is a conductor of electricity and could lead to unintended shock to bystanders or the responder. Therefore, it is essential to move the person to a dry area before using the AED to ensure a safe and effective shock delivery.

In contrast, while it is essential not to use an AED if the person is conscious or has a pulse, these factors indicate that the individual does not need defibrillation at that moment. If the person is a child, the use of an AED may still be appropriate, provided that the device is equipped with pediatric pads or configured correctly for use on smaller patients.