Cardiopulmonary resuscitation (CPR) is the preservation or restoration of life by establishing and maintaining a person’s airway, breathing and circulation.
A person whose natural heartbeat has become disrupted, or has stopped, may be kept alive by lifesavers who provide artificial circulation of the blood and artificial ventilation of the lungs (rescue breathing). External chest compression is capable of providing circulation of the blood. In this procedure, the heart is rhythmically compressed between the breastbone (sternum) and the backbone (spine). This procedure is known as cardiopulmonary resuscitation or CPR.
Any attempt at resuscitation is better than no attempt.