What Is CPR? CPR is a key part of the chain of survival. The chain of survival describes the links which gives best chance of survival to a patient in cardiac arrest. Cardiopulmonary Resuscitation (CPR) stands for ; Cardio; Heart. Pulmonary; Lungs. Resuscitation; Revive. Cardiopulmonary Resuscitation means reviving the heart and lungs. CPR is a technique used in an emergency, when a person’s heart has stop beating and  their breathing has stopped. Remember the 4 Rs of CPR; Risk;  factors …