What is the recommended compression depth for adult CPR?

The recommended compression depth for adult CPR is 2 inches. This depth is critical to ensure that enough pressure is applied to the chest to effectively circulate blood to vital organs, particularly the brain and heart, during a cardiac arrest. Compressing to the proper depth helps to create a significant increase in intrathoracic pressure, which is necessary for increasing blood flow during compressions.

Research and guidelines from reputable organizations, such as the American Heart Association, have reinforced this standard to optimize the chance of survival and favorable outcomes following cardiac arrest. Compressing too shallow may not provide adequate blood flow, while compressing too deeply may lead to injuries or complications, such as rib fractures. Therefore, 2 inches strikes a balance that maximizes the effectiveness of CPR without introducing unnecessary risk to the patient.