What is Compression Fraction?

Chest compression fraction is a new term in the world of CPR. It is the percentage of time in which chest compressions are done by rescuers during a cardiac arrest. In a real-world cardiac arrest, CPR often is interrupted or delayed by things such as rescue breaths, pulse checks and heart rhythm analysis.

Researchers have found that fewer pauses in CPR increase the chances of surviving a cardiac arrest. AED Challenge now includes compression fraction (called "CPR Percent") to make responders aware of the importance of high-quality CPR. Read more (external website)