How deep should chest compressions be during CPR for an adult?

During CPR for an adult, chest compressions should be performed at a depth of at least 2 inches. This depth is crucial because it allows for effective circulation of blood during the compression cycle. Compressing the chest to this depth ensures that the heart is adequately compressed, which maximally yields blood flow to vital organs, particularly the brain.

Furthermore, compressions also need to be delivered at an adequate rate, typically between 100 to 120 compressions per minute, while allowing for complete chest recoil between compressions. This practice is aligned with current guidelines from organizations such as the American Heart Association, which stresses the importance of both depth and rate to ensure optimal resuscitation outcomes. Depths less than 2 inches may not generate sufficient pressure to circulate blood effectively, which can decrease the chances of survival for a person in cardiac arrest.