For one-person adult CPR, what is the recommended compression depth?

The recommended compression depth for adult CPR is 2 inches. This depth is essential because adequate compressions must be deep enough to create sufficient blood flow and cardiac output during resuscitation. The heart is located between the sternum and the spine, and compressing to a depth of 2 inches allows for effective compression that can maximize the flow of blood to vital organs, especially the brain and the heart itself.

Compressions that are too shallow, such as those at depths of 1 inch or 1.5 inches, may not provide enough pressure to create the necessary intrathoracic pressure, resulting in less effective circulation. It’s also important to maintain a compression rate of 100 to 120 compressions per minute to optimize the effectiveness of CPR. The guideline to compress at a depth of about 2 to 2.4 inches ensures that first responders deliver effective and life-saving care to adults experiencing cardiac arrest.