What is the proper technique for performing chest compressions?

Using the heel of the hand with locked elbows during chest compressions is essential for delivering effective compressions. This technique maximizes the force applied to the chest, allowing for adequate blood circulation to vital organs during a cardiac arrest. Locking the elbows helps maintain a proper posture and technique, ensuring that compressions are delivered with sufficient depth and efficiency.

Effective compressions should be performed at a depth of at least 5 cm (2 inches) in adults and at a rate of 100 to 120 compressions per minute. This helps to create enough pressure to circulate the blood effectively. Compressions that are too slow or too shallow may not provide the necessary blood flow to sustain life until emergency medical services (EMS) arrive.

It's critical to apply firm pressure during compressions, as compressing lightly will not adequately circulate blood and may compromise a victim's chance of survival. Using two hands for adults ensures that adequate force can be applied, as adults typically have a larger chest cavity than children or infants.