When should a tourniquet be applied in addition to direct pressure?

Applying a tourniquet is an essential skill in managing severe bleeding, particularly in cases of life-threatening injuries. The correct choice emphasizes that a tourniquet should be used specifically for life-threatening bleeding from an arm or leg. This typically applies to situations where a direct application of pressure has not sufficiently stemmed the flow of blood, and the potential for shock or significant blood loss exists.

Tourniquets are designed to occlude blood flow effectively, which can prevent further blood loss and potentially save a person's life. It is crucial to use them judiciously; improper use can lead to complications. In contrast, other types of bleeding, such as minor or non-life-threatening injuries, do not warrant a tourniquet, as direct pressure is usually the appropriate initial response and can often achieve satisfactory results. Therefore, recognizing the severity and nature of the bleeding is key to the correct application of a tourniquet and ensuring the safety and health of the injured individual.