The treatment is called therapeutic hypothermia and at its core is the simplest of technologies: ice.

WSJ: How Therapeutic Hypothermia Saves Lives of Cardiac Arrest Patients

Putting a price tag on lifesaving medical treatments makes people uneasy, but there's also strong medical evidence to support therapeutic hypothermia.

CNN: Cooling is catching on for cardiac arrest patients

The findings prompted the American Heart Association to include therapeutic hypothermia in 2005 guidelines for treating cardiac-arrest patients outside of a hospital.

WSJ: How Therapeutic Hypothermia Saves Lives of Cardiac Arrest Patients