Victims of cardiac arrest have a 6 percent chance of survival if the cardiac arrest occurs outside of a hospital and a 24 percent chance of survival if the cardiac arrest occurs in a hospital, according to ScienceDaily. Immediate response to cardiac arrest improves survival chances.
Cardiac arrest occurs when the heart stops beating due to an electrical disturbance and is the most common cause of death in the United States, notes ScienceDaily. The chances of surviving cardiac arrest decrease by 10 percent each minute that elapses from the victim's collapse to resuscitation with cardiopulmonary resuscitation. The majority of cardiac arrests occur at home, and of those, there are witnesses present only about 46 percent of the time.