How should lifeguards signal a role change in two-rescuer adult CPR?

In two-rescuer adult CPR, clear and effective communication is crucial for ensuring that the rescue efforts are seamless and that both rescuers are on the same page. Using the word "Switch" serves as a clear verbal signal that indicates it's time for the rescuers to take turns performing chest compressions and rescue breaths. This vocal cue is strong and distinct, making it easy for both lifeguards to acknowledge and respond accordingly during the high-pressure environment of CPR.

This method of signaling is particularly effective because it minimizes the risk of confusion that could arise from non-verbal signals like hand gestures, which might not be as easily noticed or understood in a frantic scenario. The use of a verbal command ensures that both responders are aware of the change at the same moment, enhancing coordination and maintaining the effectiveness of the lifesaving measures being performed.