What should be done to indicate that a casualty has received a tourniquet?

Marking the forehead with a "T" is the standard procedure to indicate that a casualty has received a tourniquet. This method serves a critical purpose in a chaotic environment, as it provides immediate visual information to other medical personnel and first responders. It ensures that anyone treating the casualty knows that a tourniquet has already been applied, preventing unnecessary or potentially harmful repetition of that action.

In emergency situations, clear and quick communication is crucial, and a visible mark allows for rapid identification of the treatment already given. This practice aligns with military medical protocols designed to enhance the efficiency of care delivery in the field. The marking of the forehead is widely recognized within the medical community, making it an effective way to communicate vital information about the casualty's condition.

While leaving a note, verbalizing to others, or taking a picture could convey similar information, these methods lack the immediacy and clarity provided by a visible mark on the casualty's forehead. Only the marking method ensures that anyone arriving at the scene can instantly recognize the intervention that has already been performed.