What action should be taken immediately after determining a victim is unresponsive?

When a victim is determined to be unresponsive, the appropriate immediate action is to call for emergency help. This step is crucial because it ensures that professional medical assistance is on the way while you address the situation. If an individual is unresponsive, they may be experiencing a severe medical issue that requires urgent attention.

Calling for emergency help activates the emergency response system, which is vital in a critical situation, allowing for the potential of advanced medical intervention. After making this call, you can assess the victim further, such as checking for signs of breathing or starting CPR if needed, but the priority is ensuring that trained medical personnel are notified and on their way.

This approach focuses on establishing a safe and effective chain of survival, particularly in cases such as cardiac arrest or other life-threatening conditions, where every moment counts.