IV(정맥) stands for intravenous, which refers to the administration of fluids, medications, or nutrients directly into a person's bloodstream through a vein. This method is commonly used in hospitals for patients who need immediate treatment or cannot take medications orally. An IV line is typically inserted into a vein in the arm or hand. The IV setup includes a catheter, which is a thin tube, and a bag containing the fluid or medication. This allows for precise control over the dosage and speed of administration. IV therapy is essential in various medical situations, including surgeries, hydration, and delivering chemotherapy for cancer treatment.