First aid is the immediate and urgent basic treatment given to a victim of injury or illness; when advanced medical care cannot respond promptly at that time (not yet taken to hospital or medical ambulance cannot arrive immediately).

According to the International Red Cross, first aid is defined as “Providing immediate assistance to a sick or injured person until they can be attended to by qualified medical personnel. It includes not only injuries or illnesses but also other initial care such as psychological reassurance to the patient or to those who witness a traumatic event.”

Cardiac arrest is a condition in which the heart suddenly stops beating, or the heart beats but is not able to effectively pump blood to the body. Cardiac arrest can occur in many different situations such as accidents, illnesses, etc.