Final answer:
The drainage bag used during intravenous therapy must not touch the floor to prevent contamination and to maintain a sterile environment. This is in line with the practices for IV bag placement, which require a specific height above the administration point to ensure proper fluid flow.
Step-by-step explanation:
In the context of medical care, particularly when dealing with intravenous (IV) therapy, the position of the drainage bag is of significant importance. The drainage bag should never touch the floor, to avoid contamination and maintain a sterile environment. The principle behind this is similar to the setup of IV bags, which must be placed at a certain height above the entry point into the arm to allow fluids to flow. In this case, the IV bag must be 0.24 meters above the entry point into the arm for the fluids to enter the arm effectively. Keeping the drainage bag off the floor also follows this principle of proper placement to ensure the bag functions correctly without risk of infection or complications.