I would modify a bit what Jason wrote. Though ventricular fibrillation is a pulseless rhythm and one who is dead is not able to be restored to a living state, if the electrical defibrillation is performed immediately or the blood circulation and ventilation is maintained by cardio-pulmonary chest compression resusitation technique and then defibrillation performed then death may not occur and the patient has never really, as yet, died. ..Maurice.