What is the correct technique for delivering chest compressions for adults?

Delivering chest compressions to adults effectively requires the use of both hands with the arms straight. This technique ensures that enough force is applied to compress the chest adequately, which is crucial for maintaining blood flow during cardiac arrest. When using two hands, the rescuer is able to apply greater force than with one hand, which is vital since the compressions need to push hard enough to create adequate internal pressure in the thoracic cavity.

Positioning the hands correctly on the lower half of the sternum allows for optimal force transfer, and straightening the arms helps maintain effective body mechanics. This technique maximizes the depth and rate of compressions, which are critical for increasing the chances of survival until advanced medical assistance arrives. Additionally, proper body positioning and technique reduce the risk of injury to both the rescuer and the patient.