💉 How an IV Works! IVs play an important role in patient care! They give us access to the bloodstream to deliver medications for fast action! Many patients are scared of IVs and also don’t realize there is no needle left in the arm! We use a needle to insert the IV but then the needle is removed and all that’s left is a flexible plastic tube! IVs come in many sizes we call gauges. The higher the gauge, the thinner the tubing! Some medications or blood products require larger IVs like 18-20 gaug