For an adult, the preferred AED pad placement is the standard anterolateral (front–side) position.

  • Place one pad on the upper right chest , just below the right collarbone and to the right of the breastbone.
  • Place the other pad on the lower left side of the chest , a few inches below the left armpit, along the side of the chest.

This placement lets the shock travel effectively through the heart and is the recommended default for adults in sudden cardiac arrest.

Information gathered from public forums or data available on the internet and portrayed here.