What phrase should the compressor use to indicate a position change during CPR?

Using the phrase "Switch" during CPR to indicate a position change is effective because it is brief, direct, and universally understood among rescuers. In a high-stress situation like performing CPR, clear and concise communication is vital to ensure that both the person performing compressions and the person providing rescue breaths or monitoring the situation are synchronized. "Switch" implies a clear exchange of roles without needing to elaborate, which can help maintain the rhythm of compressions and the overall efficiency of the resuscitation effort.

In contrast, phrases like "Change now" may lack urgency or clarity, while "Time out" could imply a break in the activity, possibly causing confusion. Similarly, "Stop compressions" does not encourage the teamwork needed during the switch and could lead to a misunderstanding regarding when to resume compressions. Thus, "Switch" is the most suitable phrase for ensuring effective teamwork and communication during CPR.