What is the immediate first action in cases of major external bleeding?

In cases of major external bleeding, the immediate first action should be to apply direct pressure to the bleeding site. This is crucial because direct pressure is the most effective way to control hemorrhage and allows the clotting process to begin. By applying pressure, you help minimize blood loss and stabilize the patient until further actions, such as advanced medical interventions, can be taken.

Starting CPR, administering oxygen, or beginning IV fluids are important in managing patients with severe injuries, particularly if there are other underlying conditions such as shock or respiratory distress. However, these actions are secondary to controlling the bleeding, which is vital to prevent further complications. Therefore, applying direct pressure is prioritized as the first response to manage major external bleeding effectively.