Place the casualty on his back with his knees flexed (paragraph 4-4).
Treat the casualty for shock (Lesson 7). Maintain the casualty’s airway and administer ventilations as needed. If the casualty vomits, perform a finger sweep to remove vomitus from his mouth. (If the vomitus is not removed, the casualty may inhale the vomitus and choke.)
Administer oxygen (high percentage) if available. Do not allow the casualty to eat or drink anything. Do not administer any sedative or analgesic agent. If internal bleeding is present, keep the casualty as still as possible, initiate an intravenous infusion, and evacuate the casualty to a medical treatment facility immediately. Internal bleeding into a cavity cannot be controlled by the medic in the field.