A nurse is preparing to initiate intravenous (IV) antibiotic therapy for a newly admitted 12-month-old infant. Which of the following actions should the nurse plan to take?

The correct answer is A: Use a 24-gauge catheter to start the IV. A 24-gauge catheter is appropriate for infants as it allows for a slow and controlled flow rate, reducing the risk of infiltration or extravasation. Starting the IV in the foot (B) is not recommended for infants due to a higher risk of complications. Covering the insertion site with an opaque dressing (C) is unnecessary and may hinder observation for signs of infection. Changing the IV site every 3 days (D) is not recommended unless there are signs of complications or infection.