The tension indicator usually consists of printed patterns or markings on the bandage material. These markings are designed in such a way that when the bandage is stretched to the appropriate level for the pressure immobilization technique, the shapes of the indicators change. For example, they might go from being a certain geometric shape to another shape, or a color - coded area might become visible. This visual change indicates to the user that the correct compression pressure, typically in the range that helps slow the spread of venom through the lymphatic system without cutting off circulation, has been applied along the length of the limb being bandaged.
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