What is the recommended depth for chest compressions in adults?

The recommended depth for chest compressions in adults is at least 2 inches. This depth is essential to ensure that compressions are effective in generating adequate blood flow during cardiopulmonary resuscitation (CPR). The mechanism behind this recommendation lies in the need to compress the chest far enough to overcome the stiffness of the chest wall and the pressure needed to circulate blood effectively through the heart and vital organs during cardiac arrest.

Studies and guidelines from organizations like the American Heart Association emphasize achieving this depth because it has been shown to increase the likelihood of restoring spontaneous circulation and improving outcomes for patients in cardiac arrest. Compressions that are shallower than this may not provide sufficient pressure to create the necessary blood flow, while deeper compressions can lead to injuries without significantly improving outcomes.

Overall, maintaining an effective compression depth of at least 2 inches is crucial for maximizing the effectiveness of CPR in adults.