Final answer:
Controlled hypothermia has been associated with improved survival in patients with cardiac arrest.
Step-by-step explanation:
Among others, controlled hypothermia has been associated with improved survival in patients with cardiac arrest. Some emergency department physicians induce coma and lower the patient's body temperature to reduce damage to the heart. The lower body temperature slows the patient's metabolic rate, reducing the heart's workload and allowing the organs to function with less blood.