Final answer:
During 2-rescuer CPR, one person performs chest compressions while the other provides ventilation. They should alternate to avoid fatigue and ensure high-quality compressions, and proper technique and training are important to avoid injury.
Step-by-step explanation:
During 2-rescuer CPR, the roles of each person are clearly defined. One rescuer is responsible for performing chest compressions at the correct depth and rate, which is at least 5 cm deep and at a rate of 100 compressions per minute. This can be remembered by the song 'Staying Alive' by the Bee Gees. The other rescuer is tasked with providing artificial respiration, although current protocols emphasize high-quality chest compressions over ventilation when first initiated. During this procedure, proper hand placement on the sternum is crucial to avoid causing harm, such as broken ribs or injuring the liver.
The rescuers should alternate positions if possible to avoid fatigue, which can compromise the quality of chest compressions. Both rescuers must communicate effectively and coordinate their efforts to ensure the CPR is performed efficiently. It's important to note that CPR performed by untrained individuals can result in injuries. Therefore, proper training in CPR, which is widely available through organizations like the American Red Cross, is essential for effectiveness and safety.