In calculating chest compression fraction (CCF), what is the formula used?

The calculation of chest compression fraction (CCF) is crucial in assessing the quality of cardiopulmonary resuscitation (CPR) performed during a cardiac arrest event. The correct formula for CCF is derived from determining the proportion of the total code time that is actually spent delivering chest compressions.

Using "Actual CPR time" in the numerator indicates the amount of time that compressions are actively being delivered, which is essential for maintaining blood flow to vital organs during a cardiac arrest. The "Total code time" in the denominator encompasses the entire duration of the resuscitation efforts, including times when compressions are not being performed, such as during defibrillation or when assessing the patient's rhythm.

Thus, by dividing the actual time spent performing chest compressions by the total time of the resuscitation attempt, healthcare providers can calculate the CCF, which is a vital metric for assessing the effectiveness of CPR. A higher CCF indicates better quality CPR, as it reflects a greater percentage of time spent delivering compressions, which is directly linked to improved outcomes in cardiac arrest patients.