In adult CPR, what hand positioning technique is used for compressions?

In adult CPR, the correct hand positioning technique for delivering chest compressions involves placing one hand on top of the other. This technique allows for the use of body weight to effectively compress the chest. By interlocking the fingers, the rescuer can exert greater force and maintain proper alignment over the sternum, which is essential for generating adequate blood flow during compressions. This method also helps reduce the risk of injury to both the rescuer and the person receiving CPR.

In contrast, placing fingers interlaced off the chest would not provide the necessary force for effective compressions and could lead to ineffective CPR. Using two fingers placed at the center of the chest is the method appropriate for infants, not adults; this technique wouldn’t suffice for the larger chest cavity of an adult. The encircling thumbs technique is typically utilized in infant CPR, specifically for two-person rescuer scenarios, and is not applicable for adult compressions. Thus, the technique of placing one hand on top of the other is crucial for effective adult CPR.