"Intravenous" refers to a method of delivering fluids, medications, or nutrients directly into a person's bloodstream through a vein. This technique is commonly used in hospitals and clinics to ensure rapid absorption and effectiveness of treatments. An intravenous line, often called an IV, is typically inserted into a vein in the arm or hand. The intravenous method is essential for various medical situations, such as administering chemotherapy for cancer treatment, providing hydration during surgery, or delivering antibiotics for infections. It allows healthcare professionals to closely monitor a patient's response and adjust dosages as needed for optimal care.