 Advance care planning should note if a patient is using a implantable cardioverter-defibrillator (ICD) and give instructions about the circumstances in which leaving it activated would be contrary to the patient's goals.An ICD is a device designed to prevent cardiac arrhythmia in heart patients.This is a life saving device for people who have a goal to live for a long time, but at the end of life it is recommended that the caregiver discuss deactivating this device with the patient and health care provider.