Which of the following is a critical component of effective CPR?

Using proper hand positioning is crucial for effective CPR because it directly impacts the quality and efficiency of chest compressions. Proper hand placement ensures that compressions are delivered at the correct location on the chest, which is typically in the lower half of the sternum. This positioning allows for optimal depth and allows for effective blood flow to vital organs during the compression phase of CPR.

In addition to promoting effective compressions, correct hand positioning reduces the risk of injury to the ribcage and internal organs, while ensuring that compressions are delivered at the correct angle and force. The recommended depth for adult compressions is at least 2 inches (5 cm), and the compressions should be at a rate of 100 to 120 compressions per minute. Achieving this depth and rate is more likely when the hands are positioned correctly.

Other choices may incorporate elements of CPR but do not emphasize the fundamental mechanics of compressions as strongly. For instance, providing rescue breaths has its place in specific CPR scenarios, but the focus in high-quality CPR is largely on maintaining effective compressions. Maintaining eye contact does not aid in providing the life-saving measures required during cardiac arrest. Lastly, taking breaks for breaths can disrupt the compression cycle, which needs to remain consistent and