How deep should compressions be for adults and children according to CPR guidelines?

The recommended depth of chest compressions for adults and children during CPR is at least 2 inches (approximately 5 cm). This depth is crucial because it ensures that compressions are adequate to create enough blood flow to vital organs, particularly the heart and brain, during cardiac arrest. Deep and effective compressions are essential to increase chances of survival and positive outcomes when performing CPR. The emphasis on reaching this specific depth is based on studies that demonstrate deeper compressions are more efficient at pushing oxygenated blood to the heart and brain, which can help sustain life until further medical intervention can be provided.

Inadequate compression depth, such as the other options suggest, may result in ineffective pumping of the heart, reducing the chances of resuscitation and recovery. Therefore, training emphasizes the importance of achieving this standard for compressions in both adults and children.