A cardiac arrest can happen anytime, anywhere and to anyone. Early defibrillation and effective CPR is the single most effective treatment for sudden cardiac arrest. By being aware and prepared for an emergency you could help save the life of a work colleague, friend or member of the public. You do not need any previous first aid knowledge to attend a defibrillator course. Training will show you how to use a defibrillator and how to do CPR – part of the chain of survival.