Cardiopulmonary resuscitation (CPR) is a series of steps to help a person who is not responding and has stopped breathing. CPR helps deliver oxygen rich blood to the body tissue when the body is not able to do this on its own.

CPR is given to a person who is not responding and has stopped breathing. Reasons for this may include:

The outcome will depend on the initial cause and how soon effective CPR was started. Many victims are unable to regain a normal heartbeat after it has stopped.