Final answer:
The nurse should inform Mr. Shure that the IV medication is an antineoplastic agent used for treating lung cancer.
Step-by-step explanation:
The nurse should respond to Mr. Shure's question about the IV medication by providing accurate and concise information. The nurse can say something like:
"Mr. Shure, the medication in the IV bag is called an antineoplastic agent. It is commonly used in cancer treatment. Antineoplastic agents help to slow down or stop the growth of cancer cells in the body. This medication is specifically used to target and treat lung cancer. It is an important part of your treatment plan. If you have any more questions or concerns, please don't hesitate to ask."