Basic Life Support (BLS) Practice Exam

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Which of the following is a key component of high-quality CPR?

Compressing the chest at a slow rate
Allowing complete chest recoil between compressions
Minimizing ventilations
Using a single provider only

The correct answer is: Allowing complete chest recoil between compressions

Allowing complete chest recoil between compressions is critical for effective cardiopulmonary resuscitation (CPR) because it enables the heart to refill with blood. When chest compressions are applied, blood is pushed out of the heart and into the circulation; if there is not full recoil, it may prevent the heart from refilling adequately, thereby reducing blood flow to vital organs during subsequent compressions. The understanding of high-quality CPR emphasizes the importance of maintaining a proper rate and depth of compressions, as well as ensuring adequate ventilation. However, one of the simplest yet most impactful practices is that complete chest recoil allows for better circulation during a cardiac arrest scenario, leading to increased chances of survival and recovery. This practice aligns with current CPR guidelines, which stress the significance of minimizing interruptions and ensuring that each compression is effective.