If the rhythm remains unchanged after CPR, which of the following should be administered next?

In a scenario where the rhythm remains unchanged after initiating CPR, the primary focus needs to be on maintaining effective chest compressions. Continuing compressions is crucial, as they help circulate blood to vital organs and increase the likelihood of a successful outcome. During SCA (sudden cardiac arrest), the heart is typically in a rhythm that doesn't effectively pump blood, which necessitates ongoing CPR until a change in rhythm occurs or advanced life support is available.

Maintaining this compressive effort ensures that perfusion continues to important areas such as the brain and heart. Interrupting compressions for interventions that do not have immediate effects, such as reassessing medications or checking for a pulse, could lead to unnecessary interruptions in blood flow. While monitoring the situation and conducting assessments is important, the immediate next step after CPR, when the rhythm is unchanged, should always prioritize the continuation of compressions to maximize the chances of restoring a viable rhythm and effective circulation.