What is essential for making AED pads adhere properly?

The adherence of AED pads to the chest is crucial for effective shock delivery and proper monitoring of the heart's rhythm. For the pads to stick effectively, the skin must be dry. Excess moisture, such as sweat or water, can interfere with the adhesive properties of the pads. A thorough application on dry skin allows for proper contact and ensures that the electrical impulses travel effectively from the pads into the body.

While moisture on the skin can hinder adhesion, environmental temperature can also affect how well the adhesive works, but it is not as directly impactful as the moisture factor. The size of the pads is generally standardized for adult and child use, and while it is important for coverage, it is not a factor that influences how well the pads adhere. Thus, having clean, dry skin is essential for optimal adhesion and effective use during an emergency situation.