Defibrillator, heart's normal heart rhythm back to normal again throw out the tool provides. Or new to have suffered a heart fibrillation stopped to give the electrical energy into shock if the heart is stimulated and contracts from the outside. To be given shock to the heart of the heart ventricular defibrilatör must fibrilsyonda. Shock to the heart is not completely stopped. At the same time the heart is also used in the treatment of rhythm disorders.