Which statement about Chest Compression Fraction (CCF) is true?

Which statement about Chest Compression Fraction (CCF) is true?

• A. It refers to the depth of chest compressions.
• B. It measures how often breaths are given.
• C. It is the time spent pausing compressions.
• D. It should be at least 60% and ideally more than 80%.

Answer: (D)

Chest Compression Fraction measures the portion of CPR time during which chest compressions are actually delivered. It’s about how continuous the compressions are, not how deep they go or how often you ventilate. The statement is true because guidelines define CCF as the percentage of total resuscitation time spent compressing, and they emphasize keeping interruptions to a minimum. A CCF of at least 60% means more than 60% of the CPR time is spent delivering compressions, and aiming for more than 80% further improves blood flow to the heart and brain by reducing pauses. The other ideas mix up what CCF reflects: depth is a separate metric for how hard you compress, ventilation rate is about breaths, and the time spent pausing compressions is the complement to CCF rather than CCF itself.

Chest Compression Fraction measures the portion of CPR time during which chest compressions are actually delivered. It’s about how continuous the compressions are, not how deep they go or how often you ventilate. The statement is true because guidelines define CCF as the percentage of total resuscitation time spent compressing, and they emphasize keeping interruptions to a minimum. A CCF of at least 60% means more than 60% of the CPR time is spent delivering compressions, and aiming for more than 80% further improves blood flow to the heart and brain by reducing pauses. The other ideas mix up what CCF reflects: depth is a separate metric for how hard you compress, ventilation rate is about breaths, and the time spent pausing compressions is the complement to CCF rather than CCF itself.