Final answer:
A rescuer should place AED pads at least one inch away from an implanted defibrillator or pacemaker and avoid placing them directly over the device. CPR is advised before using an AED, which provides automated assistance during cardiac emergencies.
Step-by-step explanation:
If a rescuer encounters a victim with an implanted defibrillator or pacemaker in need of emergency care, the rescuer should still use an Automated External Defibrillator (AED), but with specific precautions. The AED pads should be placed at least one inch away from the implanted device to avoid interference. The device may appear as a lump under the skin, usually near the left upper chest. It's also important to avoid placing the AED pads directly over the implanted device.
Moreover, despite the presence of an implanted defibrillator, if the patient is unresponsive and not breathing normally, the use of an AED may be necessary to correct a potential heart rhythm issue the implanted device could not address. However, before using an AED, CPR (cardiopulmonary resuscitation) is recommended as it is vital to maintain blood flow to the brain and other vital organs until a normal heart rhythm is restored.
The AED itself is designed to be user-friendly, providing verbal instructions and automating the diagnosis of the heart rhythm before administering a shock. It is beneficial in the critical first moments after a cardiac arrest and can be found in many public places for such emergencies.