How can a high chest compression fraction be achieved during CPR?

A high chest compression fraction can be achieved during CPR by minimizing pauses in chest compressions. This concept refers to the proportion of time during CPR that chest compressions are actively being performed compared to the total time of the resuscitation effort. Each pause in compressions, whether for breaths, to analyze the rhythm, or to attach an AED, reduces the effective output of CPR. By minimizing these pauses, the individual performing CPR ensures that more of the time is spent delivering compressions, which are crucial for maintaining blood flow to the heart and brain during cardiac arrest.

Maintaining high-quality chest compressions—both in terms of depth and rate—is critical for effective CPR. However, the fundamental goal is to keep the interruptions to a minimum in order to maximize the amount of time compressions are being delivered. Reducing pauses allows for better circulation and increases the chances of a successful resuscitation outcome.