The depth of compressions during adult CPR should be?

The recommended depth of compressions during adult CPR is at least 2 inches (5 cm). This depth is based on extensive research and guidelines that aim to provide effective circulatory support to the patient during a cardiac arrest. Compressions of this depth ensure that enough blood is being circulated to vital organs, particularly the brain and heart, to sustain life until further medical intervention can be provided.

Studies have shown that compressions less than this specified depth can significantly reduce the chances of survival, as they do not generate sufficient pressure to maintain cerebral and coronary perfusion. It is essential for rescuers to apply firm and adequate force during chest compressions, which not only encompasses the depth but also the rate and full chest recoil, to maximize the effectiveness of the CPR process.

In contrast, depths less than 2 inches will not provide the necessary blood flow required to support vital organ functions, while compressions that are too deep can lead to unnecessary risks of injury, particularly to the rib cage. Thus, adhering strictly to the guideline of at least 2 inches ensures the highest chance of a successful outcome in resuscitation efforts.