CPR (cardiopulmonary resuscitation) is pushing down on a person's chest and breathing into their mouth. It is used in emergencies when a person's heart stops beating or when a person 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.

The steps of CPR are C-A-B:

• C for compression
• A for airway
• B for breathing

CPR can also be done with only compressions. This is sometimes called hands-only CPR.