Normally, in times of a cardiac arrest cardio pulmonary resuscitation is the best method to employ for keeping the victim alive until any kind of medical intervention as it is the process which is used to return the flow of blood and oxygen throughout the body to delay tissue death and brain damage and to prevent untimely death. CPR mainly comprises of two methods which are external cardiac massage administered in the form of chest compressions and artificial respiration administered in the form of mouth-to-mouth breathing. What Is First Aid? First Aid is the basic knowledge about how to help people who are suffering from any illness or injury so as to preserve the victim's life, prevent his or her condition from further worsening and to promote speedy recovery. Along with a CPR certification , many jobs require a person to be certified in first aid as accidents can happen with anyone, anywhere and specially with children so in such cases knowledge about how to ...