What should be done if a casualty has excessive bleeding from a torso wound during the TFC phase?

In the case of excessive bleeding from a torso wound during the Tactical Field Care (TFC) phase, applying a deliberate tourniquet is the appropriate response. A deliberate tourniquet is specifically designed to control severe hemorrhaging and is used in scenarios where direct pressure or bandages are not effective in stopping the blood flow.

When dealing with torso wounds, where major blood vessels may be compromised, a tourniquet can be vital in preventing fatal blood loss. This technique works by constricting blood flow to the area, allowing time for further medical intervention. It is important to apply the tourniquet above the level of the wound, ensuring it is tight enough to effectively halt arterial bleeding.

While applying a bandage could help, it may not provide the necessary compression required to stop the severe bleeding in this critical situation. Initiating CPR and ensuring proper airway management are crucial in other circumstances, but they do not address the immediate threat posed by uncontrolled hemorrhage from a torso wound. Therefore, opting for a deliberate tourniquet is the most effective and life-saving action to take in this scenario.