What should be allowed during chest compressions in CPR?

During chest compressions in CPR, allowing for complete recoil of the chest is crucial for effective circulation. Complete recoil means that the chest wall is allowed to return to its normal position between compressions. This allows for the heart to refill with blood before the next compression, maximizing blood flow during the next compression cycle.

If the chest does not fully recoil, it can impede blood return to the heart and reduce the efficiency of subsequent compressions. Therefore, ensuring that the chest has enough time and space to fully expand between compressions is vital for maintaining proper cardiac output.

In practice, allowing for continuous pressure (the first choice) would not support heart refilling, while rapid pushing (the third choice) can compromise the depth and quality of compressions. Minimal resistance (the fourth choice) does not emphasize the importance of full recoil and can also lead to decreased effectiveness during CPR.