CPR First off, Cardiopulmonary rescusation(CPR) is an emergency procedure performed in an effort to manually preserve intact brain function until further measures are taken to restore spontaneous blood circulation and breathing in a person who is in cardiac arrest. It is indicated in those who are unresponsive with no breathing or abnormal breathing. There are lots of different types of CPR, but some of the following include Standard, Prone, Pregnancy, and Compression. CPR involves chest compressions at least 2 inches deep and at a rate of at least 100 per minute in an effort to create artificial circulation by manually pumping blood through the heart and the body. The giver may also provide breaths by either exhaling into the person's mouth or nose or using a device that pushes air into the person's lungs. This process of externally providing ventilation is termed artificial respiration. Current recommendations place emphasis on high-quality chest compressions over artificial respiration; a simplified CPR method involving chest compressions only is recommended for untrained rescuers. CPR alone is unlikely to restart the heart. Its main purpose is to restore partial flow of oxygenated blood to the brain and heart until professional medical care can arrive. The objective is to delay tissue death and to extend the brief window of opportunity for a successful resuscitation without permanent brain damage. Administration of an electric shock to the subject's heart, termed defibrillation, is usually needed in order to restore a viable heart rhythm. Defibrillation is effective only for certain heart rhythms, namely ventricular fibrillation or pulseless ventricular tachycardia, rather than asystole or pulseless electrical activity. CPR may