Final answer:
The tourniquet should be placed about 0.24 m above the antecubital area.
Step-by-step explanation:
A tourniquet is a device used to temporarily control or restrict blood flow to a limb or a part of the body. Tourniquets are typically used in emergency situations to prevent severe bleeding, especially in situations where direct pressure, wound packing, or other measures are insufficient. Proper placement of a tourniquet is essential to effectively control bleeding while minimizing potential complications.
The tourniquet should be placed about 0.24 m above the antecubital area. This is the point where the IV needle is inserted into the vein. By placing the tourniquet at this height, it helps to increase the visibility of the veins and makes it easier to locate the appropriate area for IV insertion.