What should be the immediate action after confirming a victim is unresponsive and has no pulse?

The correct immediate action after confirming a victim is unresponsive and has no pulse is to begin chest compressions. This step is crucial because it addresses the absence of circulation, which is life-threatening. When a person is unresponsive and pulseless, the heart is not pumping blood effectively to the vital organs, including the brain. Chest compressions provide artificial circulation by manually pumping the heart, thereby maintaining blood flow and oxygen delivery until advanced care can arrive.

In a situation where a victim is unconscious and lacks a pulse, calling for help is essential but should follow or happen simultaneously with the initiation of chest compressions. The focus during the initial response should always be on initiating CPR immediately to improve the chances of survival, as each second without circulation reduces the chance of recovery significantly.

Assessing for breathing is also important, but if there is no pulse, the priority shifts to ensuring chest compressions are commenced without delay. Starting rescue breathing should only be considered after establishing that compressions are underway.