Cardiopulmonary Resuscitation or CPR, is a lifesaving technique that is used when emergencies occur. It includes near-drowning or heart attack where heartbeats or breathing has stopped. CPR comprises chest compressions and mouth-to-mouth respiration. CPR allows blood oxygenated to circulate to the brain and the heart, which are vital organs. CPR keeps the patient alive until further advanced procedures-like defibrillation, an electric shock to the chest- are done to treat the cardiac arrest. Lack of enough oxygenated blood may lead to brain damage after few minutes. Therefore, because the patient suffers, there are minimal chances of recurring cardiac arrest.