What is the chance of someone surviging a?sudden cardiac arrest?

Location location: Survival depends on time to reversal of the arrest; patients in the real world who are appropriately defibrillated within 2 minutes have a 70% survival rate (this is population wide, not specific to any one individual). If the arrest happens in the hospital and is due to a medical or surgical issue, survival is actually lower (as the arrest is part of the dying process from the other illness).