The anteroposterior AED pad placement options are basically front-and- back arrangements: one pad goes on the front of the chest, and the other goes on the back, behind the heart. This is used as an alternative when standard side-to-side placement is not ideal, and it is commonly described for children, smaller patients, or certain special situations.

Placement options

  1. Front chest + upper back. One pad is placed on the center or upper center of the chest, and the second pad is placed on the back between the shoulder blades.
  1. Front chest + back directly behind it. The back pad should line up opposite the front pad so the shock pathway runs through the heart.
  1. Pediatric use. Many guides describe anteroposterior placement for infants and children when it helps pad fit or avoids pad overlap.

Common reasons to use it

  • The chest is too small for standard side-to-side placement.
  • The front placement is difficult because of anatomy, clothing, or pad size.
  • You need a front-and-back path for better pad contact and shock delivery.

Simple visual

Pad| Usual spot
---|---
Front pad| Center of the chest
Back pad| Between the shoulder blades, directly behind the front pad

For adult AED use, the more common default is still anterolateral placement, while anteroposterior is the front-and-back alternative used in specific cases.