How would you treat a casualty with suspected internal bleeding?

In the case of a casualty with suspected internal bleeding, first ensure the scene is safe and call for emergency medical help. Keep the person calm and still to minimize movement and further injury. Monitor their vital signs, such as pulse and breathing, and have them lie down, preferably with their legs elevated if there are no head or spinal injuries. Do not give them anything to eat or drink, as surgery may be required.