A Defibrillator is a life saving device, which restores a normal heartbeat to a victim after a cardiac arrest. The electrical pulse it emits to the heart restores it to a regular heartbeat, and allows the heart to return to pumping blood around the body.
Modern defibrillators are designed so that almost no training is required to use them. Placing the two pads, which should be either side of the heart arteries, is the only action required of a rescuer, other than pressing the shock button on semi-automatic defibrillators. They are compact, sturdy and portable.