Emergency Medical Responder (EMR) British Columbia Provincial Licensing Practice Exam

The correct response is based on established guidelines for performing cardiopulmonary resuscitation (CPR) effectively. Switching compression duties every two minutes is recommended to maintain the quality of chest compressions. Doing so helps to keep the compressions strong and effective, while also reducing fatigue for the rescuers.

After two minutes of continuous compressions, it is advisable to switch minically to ensure that the compressions are delivered at the optimal rate and depth and with the necessary speed and energy. This allows for a brief recovery period for the rescuer who is switching out, thus maintaining the overall efficiency and effectiveness of the CPR.

In contrast, switching every minute may not provide sufficient time for each rescuer to deliver the maximum number of effective compressions before switching, while waiting five minutes would likely result in degraded effectiveness due to fatigue. Switching after the second rescue breath does not align with the standard protocol, as it does not take into account the critical need to maintain consistent, high-quality compressions throughout the resuscitation effort. Maintaining a rhythm in CPR is vital for increasing the chances of survival in cardiac arrest scenarios.