What is the recommended surface for performing AED on a victim?

The recommended surface for performing AED on a victim is a firm and dry surface because this allows for the most effective delivery of the electrical shock necessary for defibrillation. A firm surface helps to ensure that the AED pads maintain proper contact with the victim's skin, maximizing the conductivity and efficacy of the electrical shock delivered to the heart. Additionally, a dry surface minimizes the risk of electrical shock to rescuer and increases the effectiveness of the AED by ensuring that the pads adhere well.

Soft grass or sand could cause instability and may interfere with the positioning of the victim, potentially preventing effective pad placement. A concrete surface could be firm, but if it is wet, it may increase the risk of electrical hazards. Therefore, a firm and dry surface is ideal for performing AED to enhance both the safety and the chances of successful resuscitation for the victim.