Why is chest recoil important during CPR?

Chest recoil during CPR is crucial because it allows blood to flow back into the heart between compressions. When performing chest compressions, the pressure created pushes blood out of the heart and into circulation to vital organs. However, if there isn't adequate recoil after each compression, the heart cannot fully fill with blood. This results in less effective compressions and diminishes the amount of blood circulated to the brain and other essential organs.

Maintaining proper chest recoil ensures that the heart can refill, thereby improving the overall effectiveness of CPR, which is vital for maintaining blood flow and increasing the chances of survival for the victim.