A nurse is planning to administer by intravenous (IV) route to a client who has cystitis. Which of the following actions should the nurse take?

A. Incorrect: Administering a concentrated solution can increase the risk of phlebitis and irritation. IV antibiotics are usually diluted before administration. B. Incorrect: Choosing a small peripheral vein is not ideal for IV antibiotics, as they may cause irritation and phlebitis. A larger vein should be selected. C. Correct: Most IV antibiotics, including those for cystitis, should be infused over 30-60 minutes to minimize the risk of adverse reactions. D. Incorrect: Infusing through primary IV tubing is not always appropriate, as some antibiotics are incompatible with primary IV fluids. A separate IV line or secondary tubing is recommended.