Cardiac arrest is defined as a condition in which an individual does not breathe normally and does not respond to a call or painful stimulus and is one of the most common emergencies encountered by emergency medical service health professionals. The condition of cardiac arrest requires urgent care, which includes rapid recognition of cardiac arrest, emergency call, rapid onset of cardiopulmonary resuscitation, defibrillation, and adequate post-resuscitation care, which includes rehabilitation. Urgent care is necessary, all steps of care are interrelated and timedependent, and if the interventions are carried out in an adequate way, the probability of survival increases and the risk of consequent complications and irreversible neurological damage decreases. Through the process of thermoregulation, the human body maintains a balance between the loss and gain of temperature, i.e., it maintains an optimal body temperature. The hypothalamus is responsible for regulating the basal temperature, and because of this function it is called the body's thermostat. Hypothermia is a disorder of body temperature that occurs due to prolonged exposure to cold, is defined due to vapors of body temperature below 35 ° C, and a drop in body temperature below 32 ° C results in a slowdown of all physiological functions and bodily processes. A state of hypothermia can be achieved by a controlled lowering of body temperature to 32 ° C to 34 ° C. The procedure is performed using invasive or non-invasive methods of lowering body temperature for therapeutic purposes and is recommended in the treatment of critical patients. Even though therapeutic hypothermia is proven to be effective, it is still not a standard in treatment, but according to guidelines for the treatment of cardiac arrest, it is recommended as a therapeutic procedure after benefit-risk assessment, and adequate assessment is a condition for achieving positive outcomes.