What is the next step after determining a child is unresponsive and has no normal breathing?

The correct next step after determining that a child is unresponsive and has no normal breathing is to begin immediate CPR. In an emergency situation, identifying unresponsiveness and lack of normal breathing indicates that the child is at risk of cardiac arrest, which requires immediate action to provide vital support.

While calling 911, checking for a pulse, or retrieving an AED may be relevant steps in emergency care, they are not the immediate priorities in this scenario. When someone is unresponsive and not breathing adequately, the most critical response is to begin CPR, as this can help maintain blood flow to vital organs and potentially increase the chances of survival until emergency services can arrive. The steps of CPR will include chest compressions and rescue breaths if trained to do so, which are necessary to provide oxygenation and circulation during this life-threatening situation.