What is the minimum depth for adult chest compressions?

The guideline for performing chest compressions on adults during CPR emphasizes that compressions should be at least 2 inches deep. This depth is important because it effectively increases the likelihood of creating sufficient pressure to circulate blood throughout the body, which is critical for maintaining oxygen delivery to vital organs during a cardiac arrest.

By compressing the chest to this minimum depth, rescuers can ensure that the heart can pump blood adequately. The physical structure of the adult chest requires that compressions be both strong and deep enough to forcefully move the blood without risking injury to the ribs or internal organs, which can occur if the compressions are either too shallow or overly forceful beyond recommended depths. The guideline reflects a balance between effectiveness in generating blood flow and safety for the patient receiving care.