Cardiopulmonary resuscitation (CPR) involves reviving a person from sudden lung or cardiac failure. When the heart or lungs of a person stops working, the rescue method that is followed is known as CPR. A succession of chest compressions is done in CPR in order to fill the lungs of the patient with air. Blowing air into a patient’s lungs increases the flow of blood and oxygen to the brain. CPR is a popular method of providing first aid during emergency situations, until a patient is transported to the nearest hospital for proper care and treatment. CPR is a good option to implement till a person reaches hospital for advanced life support. Those who are already employed in the medical profession can easily learn CPR for emergency first aid requirement compared with the general population. This is because medical professionals have good prior knowledge of how the heart and the lungs function and the kind of problems that occur with these organs. Professionals who are employed in the...