During CPR on a 2-year-old in cardiac arrest, what should you allow between compressions?

Allowing the chest to fully recoil between compressions during CPR is crucial for several reasons. When CPR is performed, high-quality chest compressions generate blood flow to the brain and vital organs by creating a pressure difference that promotes blood circulation. If the chest does not fully recoil after each compression, the heart does not have a chance to refill with blood. This prevents adequate circulation and can significantly reduce the effectiveness of CPR.

Full recoil allows the thoracic cavity to return to its normal position, which helps create negative pressure in the chest and facilitates venous return to the heart. This process is essential to maximize blood flow during the next compression cycle. Additionally, ensuring proper recoil minimizes the risk of potential injuries to the ribs and internal organs and contributes to effective resuscitation efforts.

The recommendation to fully allow the chest to recoil reflects best practices in pediatric resuscitation guidelines, emphasizing the importance of technique in increasing survival rates following a cardiac event in young children.