An IV line, or intravenous 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 absorption of substances, making it essential in hospitals for patients who cannot take medications orally or need immediate treatment. The IV line is connected to a bag containing the fluid or medication, which can be administered continuously or in controlled doses. Healthcare professionals monitor the IV line to ensure it functions properly and to prevent complications, such as infection or blockage.