What is the purpose of a tourniquet in TCCC?

The purpose of a tourniquet in Tactical Combat Casualty Care (TCCC) is to control life-threatening hemorrhage. When a patient experiences severe bleeding, particularly from an extremity, applying a tourniquet can effectively stop or significantly reduce blood loss. This is critical in combat situations where rapid intervention is essential to prevent shock and potential death from exsanguination.

A tourniquet works by constricting the blood vessels to the affected area, creating pressure that halts the flow of blood. This is particularly important in situations where direct pressure is ineffective, such as with large or deep wounds. By prioritizing the management of hemorrhage, the tourniquet ensures that the patient can be stabilized for further medical treatment without the immediate risk of dying from excessive blood loss. This immediate life-saving measure is a cornerstone of TCCC protocols, emphasizing the importance of quick and decisive action in trauma care.