What is the oxygen concentration for artificial ventilation during chest compressions?

During chest compressions, the oxygen concentration for artificial ventilation should be 100%. The detailed explanation is as follows:

Chest compressions are an emergency measure primarily involving rhythmic external pressure applied to the chest. This pressure mechanically squeezes the heart, enabling passive blood circulation and assisting the heart's diastole and systole, thereby maintaining cardiac activity and ensuring systemic blood flow. This procedure is mainly indicated for individuals experiencing cardiac arrest or extremely weak pulse. While performing chest compressions, artificial ventilation must also be administered to maintain an oxygen concentration of 100%, ensuring adequate oxygen levels in the body, establishing a respiratory pathway and gas exchange, and preventing elevated carbon dioxide levels in organs and hypoxic tissue necrosis. Additionally, continuous compression of the patient's chest wall during chest compressions may lead to rib fractures, particularly if excessive force is applied. During transportation to the hospital, unnecessary movement of the patient should be avoided to prevent ongoing physical injury.

During recovery, sufficient rest should be ensured, nutritional support increased, and excessive fatigue avoided.