What should be done first when treating a casualty with severe bleeding?

When treating a casualty with severe bleeding, the immediate priority is to control the bleeding. This is critical because severe bleeding can quickly lead to shock and death if not managed promptly. Controlling the bleeding involves applying direct pressure to the wound, utilizing tourniquets if appropriate, or using hemostatic agents if available.

While elevating the injured limb can help reduce blood flow to the area, it is not as effective as directly addressing the source of the bleeding. Similarly, administering antibiotics or checking for fractures are important parts of comprehensive care but should come after ensuring the bleeding is under control. Prioritizing blood loss management is essential in any trauma situation to stabilize the patient and allow for further assessment and treatment.