What is a key metric for measuring CPR quality?

What is a key metric for measuring CPR quality?

• A. Ventilation rate.
• B. Chest compression fraction (aim >80%).
• C. Defibrillation timing.
• D. Oxygen saturation.

Answer: (B)

The main idea is that how continuously chest compressions are delivered best reflects CPR quality. Chest compression fraction measures the percentage of resuscitation time during which chest compressions are happening, so it directly captures interruptions or pauses that break perfusion. Keeping this fraction high means the heart and brain stay better perfused between compressions, which is crucial for outcomes. In practice, aiming for a chest compression fraction above about 80% is associated with better chances of return of spontaneous circulation and survival. Other factors like ventilation rate, when to defibrillate, or oxygen saturation are important for overall management or patient status, but they don’t directly quantify how well CPR compressions are being delivered.

The main idea is that how continuously chest compressions are delivered best reflects CPR quality. Chest compression fraction measures the percentage of resuscitation time during which chest compressions are happening, so it directly captures interruptions or pauses that break perfusion. Keeping this fraction high means the heart and brain stay better perfused between compressions, which is crucial for outcomes. In practice, aiming for a chest compression fraction above about 80% is associated with better chances of return of spontaneous circulation and survival. Other factors like ventilation rate, when to defibrillate, or oxygen saturation are important for overall management or patient status, but they don’t directly quantify how well CPR compressions are being delivered.