Which of the following is a critical characteristic of high-quality CPR?

High-quality CPR is characterized by providing compressions that are both hard and fast. This means that compressions should be at least two inches deep at a rate of 100 to 120 compressions per minute. This depth and speed are crucial because they create sufficient blood flow to vital organs, especially the heart and brain, enhancing the chances of survival.

The emphasis on compressing hard ensures that the chest is adequately compressed to maintain circulation. Additionally, compressions should not be slow or gentle as this can diminish their effectiveness in generating necessary blood flow. Timing aspects, like waiting before starting CPR or checking for a pulse frequently, can lead to delays that are detrimental in a cardiac arrest situation. Consistently applying the correct technique will significantly improve the outcomes for a person in need of resuscitation.