What is the main purpose of chest compressions during CPR?

The main purpose of chest compressions during CPR is to circulate blood to vital organs. When a person experiences cardiac arrest, their heart stops pumping blood effectively, leading to a lack of oxygenated blood flow to the brain and other essential organs. Performing high-quality chest compressions helps maintain some level of blood circulation during this critical time, ensuring that the vital organs receive the oxygen and nutrients they need until more advanced medical care can be provided or spontaneous circulation is restored. This action is crucial for increasing the chances of survival and reducing the risk of brain damage that can occur due to prolonged lack of oxygen.