What is the key feature of providing effective chest compressions?

Using body weight to compress the chest is a key feature of providing effective chest compressions because it allows for deeper and more effective compressions with less physical exertion from the provider. This technique helps ensure that the compressions are sufficient to create blood flow during cardiac arrest, optimizing the chances of maintaining circulation to vital organs until more advanced care can be provided.

In addition to using body weight, it's also important that compressions are delivered at the correct rate and depth, which aligns closely with maintaining a consistent rhythm. The combination of using body weight and an appropriate rhythm ensures that compressions are not only effective but also sustainable over time, which is crucial during an emergency situation.

While muscle strength can contribute to the effectiveness of compressions, relying solely on strength may lead to fatigue and less effective compressions. Keeping elbows bent is not conducive to maximizing force; straight arms help in using body weight effectively. Therefore, using body weight is fundamental in delivering high-quality chest compressions during CPR.