What action can significantly enhance the effectiveness of chest compressions during CPR?

The action that significantly enhances the effectiveness of chest compressions during CPR is ensuring adequate timing and speed. Chest compressions are most effective when they adhere to recommended guidelines, which suggest a rate of 100 to 120 compressions per minute and a depth of at least 2 inches for adults. Maintaining the correct timing and speed allows for optimal blood flow to vital organs, particularly the brain and heart, which is crucial for survival until advanced medical assistance arrives. If compressions are too slow or inadequately timed, the blood flow generated may be insufficient to support the patient’s needs.

In contrast, while rescue breaths and the use of an AED are important components of the overall resuscitation process, they do not specifically enhance the effectiveness of chest compressions themselves. Abdominal thrusts are a technique used for choking emergencies rather than for CPR, addressing a different life-threatening situation. Thus, focusing on the timing and speed of chest compressions directly impacts the quality and effectiveness of CPR.