An AED (Automated External Defibrillator) is a portable device that checks the rhythm of the heart and can deliver an electric shock to the heart to try to restore a normal rhythm when someone is in sudden cardiac arrest. Immediate CPR (Cardio Pulmonary Resuscitation) combined with early defibrillation (using an AED) can more then double a person’s chance of survival when in sudden cardiac arrest. At CPR Response Plus all of our certification courses include AED Training.