If you ever encounter someone in sudden cardiac arrest, you’ll want to help. CPR alone is not enough – early defibrillation is the only effective treatment for sudden cardiac arrest. The LIFEPAK CR® Plus AED and LIFEPAK EXPRESS® AED were created for lay users in commercial and public settings. For use by the first person at the scene of a cardiac arrest, they are designed for minimally-trained rescuers. The AEDs tell the rescuers exactly what to do, one step at a time, in a simple, clear voice. They are easy to understand and use in a cardiac emergency, when every second counts.