Why is allowing complete chest recoil important when performing high quality cpr?

Compression Depth
Compression depth is one of the main factors in high-quality CPR. We know that pushing hard enough on the chest greatly affects survival rates. In addition, defibrillation success is associated with increased compression depth. It also prolongs the time when a fibrillating heart is receptive to defibrillation. Remember that letting the chest to fully recoil during compressions allows the heart to more fully refill with blood.
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