What is the purpose of using a tourniquet?

A tourniquet is a medical device specifically designed to apply pressure to a limb in order to control severe bleeding. When applied correctly, it can effectively restrict blood flow to the area below the site of application, significantly reducing the risk of hemorrhagic shock due to severe blood loss, which can be life-threatening. In trauma scenarios, especially those involving amputation or significant lacerations, quick and effective hemorrhage control is critical. The tourniquet is an essential tool for EMTs and first responders, facilitating the stabilization of the patient until they can receive more definitive medical treatment.

While stabilizing a fracture, reducing pain, and ensuring airway patency are all important aspects of emergency medical care, they do not relate to the primary function of a tourniquet. Each of these other functions involves different interventions or devices, such as splints for fractures, analgesics for pain management, and various techniques for maintaining clear airways.