CPR (cardiopulmonary resuscitation) is pushing down on a person's chest and breathing into his or her mouth. It is used in emergencies when a person's heart stops beating, or when he or she stops breathing.
CPR works to move blood to the person's brain to help prevent brain damage. CPR can help keep a person alive until a health professional arrives.
Medical Review:William H. Blahd, Jr., MD, FACEP - Emergency Medicine & Adam Husney, MD - Family Medicine