AED stands for Automatic External Defibrillator. An AED analyzes the heart's rhythm and tells a first aid provider to deliver a shock to a victim of sudden cardiac arrest. This shock, called defibrillation and may help the heart reestablish an effective rhythm. Studies have shown that early defibrillation increases a victim of sudden cardic arrest chances for survival. Yes, all AEDs need to be maintained on a regular basis.
Maintenance includes checking and changing batteries and electrode cables and pads.
Always follow the manufacturer's instructions for maintenance of the AED at your worksite. Sometimes an AED will tell you not to shock a victim. At that time, check the victim's pulse. Yes, if the placement of the pads on the chest is reversed, the AED will still work. No, the pads should not be removed.