An intravenous line, often called an IV line, is a medical device used to deliver fluids, medications, or nutrients directly into a patient's bloodstream. It consists of a thin, flexible tube that is inserted into a vein, usually in the arm or hand. This method allows for quick and efficient treatment, especially in emergencies or when a patient cannot take medications orally. IV lines are commonly used in hospitals for various purposes, including hydration, pain management, and administering chemotherapy. They are monitored closely by healthcare professionals to ensure proper flow and to prevent complications such as infection or phlebitis.