What is a tourniquet used for?

A tourniquet is a medical device used primarily in emergencies to control severe bleeding from an extremity, typically an arm or leg. By restricting the flow of blood to the area where it is applied, a tourniquet helps to minimize blood loss during traumatic injuries, allowing for more effective first aid measures and potentially saving a person's life.

The primary function of a tourniquet is not to completely stop all circulation but to limit blood flow enough to control bleeding while still allowing some degree of blood and oxygen supply to the limb. It is a critical tool in situations where direct pressure is ineffective, and immediate medical attention is required to address life-threatening hemorrhage. Proper application of a tourniquet entails placing it above the injury site and tightening it until bleeding stops, ensuring it is secured in place for a certain duration until professional medical help arrives.

Using a tourniquet is a key skill in both first aid and emergency response, and understanding its purpose and application can significantly impact patient outcomes in critical situations.