A patients drip bag is hung a high on a stand.The liguid flows into their blood to give them food or drugs.Explain why the bag is raised up using the words water pressure and weight.
The water pressure where the IV liquid enters the blood stream must be slightly greater than the pressure of the blood vein at that point; otherwise the fluid cannot enter the blood stream. Raising the height of the bag increases the pressure at the end of the tube, where the connection is made.
The weight of a column of IV fluid, per unit area, above the place where the fluid enters the blood is equal to the increase in pressure.
The drip bag is raised up on a stand to make use of two important principles: water pressure and weight. Let me explain why these factors are important:
First, let's talk about water pressure. Water pressure refers to the force generated by the weight of water pushing against a surface. In this case, the drip bag contains a liquid (such as food or drugs) that needs to flow into the patient's bloodstream. To make this happen, the liquid relies on gravity and water pressure. By elevating the bag higher than the patient's body, the liquid inside will experience a greater gravitational force, creating higher water pressure. This increased pressure helps facilitate the desired flow of the liquid.
Now, let's consider weight. The weight of the liquid in the drip bag also plays a crucial role. The force of gravity pulls the liquid downwards, and the weight of the liquid contributes to the overall water pressure. By raising the bag higher, the distance between the bag and the patient's body increases, allowing for more potential energy due to increased height. As the liquid flows from the bag to the patient, this potential energy is converted into kinetic energy, which helps propel the liquid into the patient's bloodstream.
In summary, by raising the drip bag high on a stand, water pressure is increased due to the greater gravitational force acting on the liquid, and the weight of the liquid contributes to this pressure. This configuration enables the desired flow of the liquid into the patient's bloodstream, providing them with the necessary food or drugs.