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When applying a tourniquet, one crucial principle is to apply it as high as possible above the injury. This practice is essential for ensuring that the tourniquet effectively controls arterial bleeding. By placing the tourniquet higher on the limb, you reduce the risk of blood continuing to flow to the injured area, which can lead to further blood loss and potentially life-threatening harm.
If the tourniquet is placed too low, it might not completely occlude the blood flow from the injury site, allowing bleeding to persist. The goal of a tourniquet is to create a pressure point that shuts off circulation to the area, and doing so at an elevated position enhances the likelihood of achieving this objective.
Additionally, while applying a tourniquet over clothing might be convenient in some situations, it may not provide the best pressure needed to stop the bleeding. Relying on the ability to control bleeding also requires understanding when it is appropriate to use a tourniquet versus when other methods can be utilized for manageable bleeding, hence knowing where to place it correctly—above the injury—is critical for effective emergency care.