What is the correct hand placement for chest compressions in an adult during CPR?

• A. On the upper half of the sternum.
• B. On the lower half of the sternum just above the xiphoid process.
• C. On the left chest near the nipple line.
• D. On the sternum just below the nipple line.

Answer: (B)

In adults, place the heel of one hand on the center of the sternum, in the lower half just above the xiphoid process, with the other hand on top. This location aligns the compressive force with the heart so each compression effectively drives blood forward. Placing hands higher on the chest is less effective at generating cardiac output, while pressing directly on or below the xiphoid process can injure the xiphoid and underlying organs (like the liver). Centering on the lower sternum provides the best balance of effective depth and safety for the patient.