What should be the immediate response if a person stops breathing after an accident?

In the event that a person stops breathing after an accident, the most critical immediate response is to begin chest compressions. This is essential because the primary goal in such emergency situations is to sustain blood circulation and oxygen flow to the brain and vital organs until professional help arrives.

While calling for emergency services and shouting for help are important actions, they should be done simultaneously or immediately after starting chest compressions. Starting mouth-to-mouth resuscitation alone is insufficient, especially if the person has no pulse. It is important to focus on high-quality chest compressions as they can help maintain circulation and are vital in emergent scenarios like cardiac arrest resulting from an accident.

Thus, the correct response involves initiating chest compressions to maximize the chances of survival by ensuring that the vital organs continue to receive blood flow.