If breathing stops, the rescuer has to perform artificial respiration. One way is mouth to mouth method. Rescuer places the victim on his back, tilts his head back and infuses air into the lungs (although exhaled air has less oxygen than fresh air, in an emergency is the amount sufficient). This must be repeated about 10-15 times per minute, until the victim starts to breathe regularly. There are cases where the mouth-to-mouth method is not recommended, and you must use a method of mouth-nose. For example, if the victim accidentally swallowed the poison or acid, the rescuer performing artificial respiration may come into contact with harmful substance and suffer alone in this. This is an example that teaches rescuers how to simultaneously take care of their health and not to increase the number of victims requiring assistance.
Another method is to perform artificial respiration patient moves his arms, which alternately increase and decrease the capacity of the chest. But it is not as effective as the method of mouth to mouth.