Why is an intravenous bottle placed at a height high above the arm of a patient?

An intravenous (IV) bottle is placed high above the patient's arm to use gravity to facilitate the flow of the IV fluid into the bloodstream. This positioning creates hydrostatic pressure, allowing the fluid to flow more easily through the IV line and into the patient's body. Additionally, it helps maintain a steady and controlled administration rate of the medication or fluid being delivered.