The researchers realized that more than half a million people in America suffer cardiac arrest each year. In Europe, more that quarter a million people suffer out of hospital cardiac arrest annually.Rilinger and his colleagues proposed that refractory cardiac arrest and veno-arterial extracorporeal membrane oxygenation can be referred to as extracorporeal cardiopulmonary resuscitation (eCPR) and it can be used as therapy for patients suffering from both cardiac arrest and out of hospital cardiac arrest. Patients under eCPR are more likely to survive cardiac arrest than those treated under convectional cardiopulmonary resuscitation (CPR). Extracorporeal cardiopulmonary resuscitation (eCPR) promises patients better outcomes and more hope for mortality However, eCPR is expensive, invasive and a complex therapy that raises many ethical and new medical concerns even where effective prognostic assessment plays a crucial function.