How to Use a Tourniquet
The Tanlulv Outdoor Adventure Network has used tourniquets many times during outdoor rescues, but found that many people still don’t know how to use them properly. Today, the editors at Tanlulv will explain how to use a tourniquet, how a tourniquet should be used, the method of using a tourniquet, and precautions for using a tourniquet:
(1) The tourniquet should be applied proximal to the wound, as close to it as possible. The forearm and lower leg are not suitable for tourniquet application, as there are two parallel bones with gaps through which blood can still flow, making the tourniquet less effective. Do not apply the tourniquet in the middle third of the upper arm to avoid injuring the radial nerve.
(2) Before applying the tourniquet, place a triangular bandage or towel underneath to prevent direct contact between the tourniquet and the skin, which could cause injury.
(3) When applying the tourniquet, slightly stretch the rubber tube, wrap it around the limb 2-3 times, and then secure it. The elasticity of the rubber will help compress the arteries and veins. Do not tie it too tightly or too loosely—tighten it until the pulse in the distal artery disappears.
(4) Keep the time the tourniquet is applied as short as possible—ideally around one hour, and no longer than four hours.
(5) While the tourniquet is in use, it should be loosened every 30 minutes to one hour. When loosening, temporary pressure can be applied to stop bleeding momentarily and ease localized ischemia. After releasing for 1–2 minutes, reapply the tourniquet slightly higher on the limb—do not re-tie it in the same spot repeatedly.
(6) Loosen the tourniquet slowly to prevent a sudden rush of blood to the affected limb, which may damage small blood vessels and affect the body’s overall blood redistribution, leading to a drop in blood pressure.(7) For patients with a tourniquet in place during transport, clearly mark their condition and note the exact time the blood flow was blocked so others can release the tourniquet on schedule and prevent prolonged blood flow obstruction, which can cause severe tissue ischemia and necrosis.
(8) When using a tourniquet, pay attention to keeping the limb warm. Since blood circulation is blocked, the limb is more vulnerable to cold and frostbite.
Tanlulv, Outdoor Adventure Network (www.tanlulv.com)