Hypothermia treatment for cardiac arrest patients was first introduced in 1950, and has been increasingly proven to play an important role in supporting emergency care and improving mortality and complications in patients with respiratory arrest. This is the opportunity for patients after cardiac arrest to survive and reduce the rate of severe brain sequelae later.

Cardiac arrest is a phenomenon in which the heart suddenly stops pumping blood to nourish the body. When the heart stops pumping blood, the patient's brain will be deprived of oxygen and cause unconsciousness and respiratory arrest.

In many countries around the world, automated external defibrillators (AEDs) are available in many public places, including shopping malls, schools, apartment buildings, train stations, and airports. The machines analyze the victim's heart rhythm and display or notify the user of the action to take at each stage.