Final answer:
To discontinue IV fluids and catheter in a preschooler, the nurse should slowly withdraw the catheter while applying pressure with a sterile gauze pad to prevent bleeding or trauma, ensuring this process is explained to the child for their understanding and comfort.
Step-by-step explanation:
When preparing to discontinue IV fluids and remove a peripheral IV catheter from a preschooler, the nurse should perform several steps to ensure the patient's safety and comfort. B. Slowly withdraw the catheter while applying pressure to the insertion site with a sterile gauze pad is the correct action to take. Immediately removing the IV catheter once the fluids are depleted, as mentioned in option A, may cause bleeding or trauma to the site. Instructing the child to remove the IV catheter independently, as suggested in option C, is not safe practice, as a preschooler lacks the coordination and understanding to do this safely. Requesting assistance from another nurse, option D, is not necessary unless the situation calls for it, for example, if the child is uncooperative or there are complications during removal. The removal process must always be performed by a healthcare professional to minimize risk of injury and infection. The nurse should ensure all equipment is ready, including sterile gauze and bandages, and should explain the process to the child to alleviate any anxiety. After catheter removal, the site should be observed for any signs of bleeding or infection.