Final answer:
An AED pad should be placed next to a medicine patch, not on it, to ensure proper electrical conductivity and effectiveness of the shock.
Step-by-step explanation:
When using an AED (Automated External Defibrillator) on a victim with a medicine patch, you should not place the AED pad directly on the patch. Instead, you should place it next to the medicine patch. This is important because the patch could interfere with the electrical conductivity and effectiveness of the AED. If the patch is exactly where the AED pad needs to go, it should be removed and the skin wiped clean before applying the AED pad. The standard placement of AED pads is one high on the victim's right side of the chest and the other on the left side below the pectoral muscles, or alternatively, one pad on the chest and one on the back if anterior-posterior placement is needed.