What is the purpose of performing chest compressions during CPR?

The purpose of performing chest compressions during CPR is to maintain circulation. Chest compressions are critical for creating artificial blood flow, which helps to deliver oxygen to vital organs when the heart is unable to effectively pump blood on its own due to cardiac arrest. When compressions are performed, they generate pressure within the thoracic cavity that forces blood out of the heart and into the circulatory system. This action is vital for preserving organ function and increasing the chances of successful resuscitation.

While preventing airway obstruction is important in CPR, it is not the primary function of chest compressions. Inducing artificial respiration is associated with mouth-to-mouth ventilation, which also plays a role in CPR but is separate from the actions of chest compressions. Stimulation of the heart would imply a direct attempt to restart the heart's electrical activity, which is not achieved through compressions alone; their primary role is to facilitate circulation.