Which of the following is NOT a sign of effective chest compressions?

The presence of a pulse is not considered a sign of effective chest compressions during CPR. Effective chest compressions are aimed at mechanically assisting the heart's function to circulate blood to vital organs in the absence of a heartbeat. In patients who require cardiopulmonary resuscitation, the heart is typically not functioning adequately or at all, which is why chest compressions are needed.

Visible rise of the chest indicates that air is entering the lungs during rescue breaths or that blood is being circulated effectively, which are both signs of effective resuscitation efforts. Similarly, the return of blood to vital organs would suggest that the perfusion created by compressions is adequate. Additionally, consistent depth and rate of compressions ensure that the compressions are delivered effectively to create sufficient blood flow, which is crucial for the success of CPR before advanced interventions can take place.