What is the primary purpose of chest compressions during CPR?

The primary purpose of chest compressions during CPR is to maintain blood flow to the heart and brain. When a person experiences cardiac arrest, the heart stops beating effectively, which interrupts the circulation of oxygenated blood to vital organs. By performing chest compressions, rescuers create artificial circulation; this helps to push blood to the heart and brain, significantly increasing the chances of survival and reducing the risk of lasting damage due to lack of oxygen.

While providing oxygen is crucial in resuscitating someone, that task is primarily accomplished through rescue breaths in conjunction with compressions, rather than chest compressions alone. Assessing the victim's condition is part of the overall CPR process, but it does not directly serve as the primary function during the compressions. Stabilizing the spine is relevant in cases of suspected spinal injury, but it is not a direct purpose of chest compressions during CPR. The emphasis during CPR is on maintaining circulation, which is critical to enhancing the chances of a successful outcome.