What is the correct action if a child with bradycardia is unresponsive?

In the case of an unresponsive child presenting with bradycardia, the appropriate immediate action is to call for help and begin CPR. This is crucial because bradycardia, defined as a heart rate lower than the normal threshold, can lead to reduced cardiac output and inadequate perfusion to vital organs. An unresponsive state indicates a significant decrease in perfusion, necessitating prompt lifesaving measures.

Initiating CPR helps restore circulation and oxygenation while waiting for additional medical assistance, which is vital in managing the child's condition. CPR should be performed effectively and promptly to maximize the chances of preserving brain function and overall survival.

The other options do not address the immediate life-threatening nature of unresponsiveness associated with bradycardia. Reassessing the heart rate or checking for signs of a rash would delay necessary interventions. Giving oral fluids is inappropriate in an unresponsive patient, as it poses a risk of aspiration. Thus, the priority is to initiate CPR and seek help immediately to stabilize the child's condition.