What should be done if a second rescuer arrives during CPR?

• A. Continue CPR with no interruption
• B. Ask the second rescuer to assist and switch roles after 5 minutes
• C. Delegate all tasks to the second rescuer
• D. Stop to discuss the situation thoroughly

Answer: (B)

When a second rescuer arrives during CPR, the appropriate action is to ask the second rescuer to assist and switch roles after a short period, typically around 2 minutes, rather than 5 minutes. The rationale behind this procedure is to maintain high-quality compressions while minimizing fatigue.

During CPR, the person performing chest compressions can quickly become exhausted, which may lead to a decrease in the effectiveness of the compressions. By having the second rescuer take over after a brief interval, you ensure that the compressions remain effective and continuous. The first rescuer can also provide ventilations if they are trained to do so while the second rescuer takes over compressions.

It's important to ensure that the transition between rescuers is smooth and efficient to avoid any interruptions in critical care being provided to the patient. This strategy is aligned with the guidelines established by the American Heart Association for performing high-quality CPR.