More often than not, a medical professional is not the first person to respond to an emergency. During a sudden cardiac arrest event, CPR and a quality defibrillator can mean the difference between life and death. The Physio-Control LIFEPAK CR Plus Automated External Defibrillator was designed for the first person at the scene of a sudden cardiac arrest. Made for the minimally trained rescuer, the fully-automatic CR Plus requires just one step, making it easy for anyone to use. Each unit is updated to the latest AHA protocol.