(no more than 150 words)Sudden out of hospital cardiac arrest is the most time critical medical emergency. In this expert opinion and literature review, we consider important issues in the pre-hospital management of cardiac arrest. Successful resuscitation is reliant on a strong chain of survival drawn from the community, dispatch center, ambulance and hospital working together. Early cardiopulmonary resuscitation and defibrillation has the greatest impact on survival. If the community response does not restart the heart, resuscitation is continued by emergency medical services staff. There is uncertainty about the best approaches for airway management and the effectiveness of current drug treatments. Prognostic factors and termination of resuscitation rules may guide the duration of a resuscitation attempt and decision to transport to hospital. If return of spontaneous circulation is achieved, the focus of treatment shifts to stabilization, restoring normal physiological parameters and transporting to hospital for on-going care.2