When Is It Appropriate to Use a Tourniquet for Bleeding Control?

When to Apply a Tourniquet

A tourniquet should be applied in the following situations: when the injury is severe (such as an open wound with significant blood loss) and there is no other way to control the bleeding, or when you are in a high-risk environment (such as a combat zone or natural disaster) where medical help is not readily available. The tourniquet should be applied to the limb as close to the wound as possible, ideally at a 45-degree angle to the artery.

Applying a Tourniquet

The CAT (Combat Application Tourniquet) or similar tourniquet should be used, following these steps: position the tourniquet on the limb, just above the wound site, and tighten it 2-3 revolutions to occlude the artery. The tourniquet should be tightened until the bleeding stops, but not so tight that it compromises circulation below the tourniquet. Once applied, the tourniquet should not be loosened unless the casualty is being transported to a medical facility, where it will be removed by a medical professional.

Tourniquet Training and Certification

Tourniquet application requires proper training and certification, as improper use can lead to further complications or even death. The Tactical Combat Casualty Care (TCCC) guidelines recommend that all military and law enforcement personnel receive training in tourniquet application, and that civilians in high-risk occupations or activities also receive training. In a survival situation, if you are not trained in tourniquet application, it is generally not recommended to attempt to use one.