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Safety / Survival / Army Field Manuals / AFM 3-05.70

Basic Survival Medicine

LIFESAVING STEPS

Tourniquet

4-49. Use a tourniquet only when direct pressure over the bleeding point and all other methods did not control the bleeding. If you leave a tourniquet in place too long, the damage to the tissues can progress to gangrene, with a loss of the limb later. An improperly applied tourniquet can also cause permanent damage to nerves and other tissues at the site of the constriction. If you must use a tourniquet, place it around the extremity, between the wound and the heart, 5 to 10 centimeters (2 to 4 inches) above the wound site. Never place it directly over the wound or a fracture. Figure 4-4 explains how to apply a tourniquet.

Figure 4-4. Application of Tourniquet

Figure 4-4. Application of Tourniquet

4-50. After you secure the tourniquet, clean and bandage the wound. A lone survivor does not remove or release an applied tourniquet. However, in a buddy system, the buddy can release the tourniquet pressure every 10 to 15 minutes for 1 or 2 minutes to let blood flow to the rest of the extremity to prevent limb loss.



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