How CPR Works

proper CPR is performed with alternating chest compressions with mouth-to-mouth breathing. This 
 
process helps push oxygen into the lungs so that it can go to the brain and keep a person alive. 
 
The most common CPR technique that is taught at first aid courses around Australia involves 
 
thirty chest compressions and two deep breaths. After that, the rescuer returns to performing 
 
chest compressions, then back to giving two more deep breaths. This pattern is maintained until 
 
proper help arrives. It is a simple technique, but knowing how to do it properly is key; the only 
 
good way to learn is by being taught at a first aid class.