During CPR, what is the primary purpose of rescue breaths?

The primary purpose of rescue breaths during CPR is to provide oxygen to the lungs. When a person is in cardiac arrest and is not breathing, their body is deprived of oxygen, which is crucial for the survival of vital organs, especially the brain. By delivering rescue breaths, you help to ensure that oxygen is introduced directly into the lungs, allowing for the crucial exchange of oxygen and carbon dioxide. This helps to keep the body tissues alive while more advanced medical care is on the way. It's important to note that while other components of CPR like chest compressions aim to restore blood flow and circulation, the specific function of rescue breaths is to address the oxygen deficit that occurs when a person stops breathing adequately.