In performing chest compressions, how should your hands, arms, and shoulders be positioned?

The correct positioning for hands, arms, and shoulders during chest compressions is critical for maximizing the effectiveness of the compressions and ensuring proper mechanics. When the arms are straight and the elbows are locked, it allows for direct force transfer through the shoulders and into the chest, which is essential for generating adequate depth and pressure during compressions.

With the shoulders positioned over the hands, body weight can be effectively used to assist in compressing the chest, rather than relying solely on arm strength. This technique not only conserves energy for the rescuer but also ensures that each compression is as effective as possible, meeting the required depth of at least 2 inches for adult victims. The alignment of the body contributes to a more efficient and powerful compression, minimizing the risk of injury to the rescuer while maximizing the effectiveness of care being provided to the patient.

Other options either compromise the effectiveness of the compressions or do not adhere to the guidelines established for high-quality CPR. Ensuring that the arms are straight and elbows locked helps maintain optimal force application, which is crucial for successful resuscitation efforts.