A nurse is caring for a child who was admitted with suspected rheumatic fever. The provider prescribes an antistreptolysin O (ASO) titer. The parent asks the nurse about the purpose of the test. Which of the following responses should the nurse make?

Choice A: This instruction is correct, as iron supplements can cause a change in the color and consistency of stools, making them dark, green, or black. This is not a sign of bleeding or infection, but a normal side effect of iron therapy. The parents should be informed of this possibility and reassured that it is harmless.

Choice B: This instruction is incorrect, as iron supplements should not be administered at bedtime, but rather one hour before or two hours after meals. This is because iron absorption is reduced by food, especially dairy products, antacids, or calcium supplements. The parents should be instructed to give the medication on an empty stomach or with a small amount of food if it causes nausea.

Choice C: This instruction is incorrect, as iron supplements should not be given with milk, as milk contains calcium, which can interfere with iron absorption and reduce its effectiveness. The parents should be instructed to avoid giving milk or other dairy products within two hours of the medication.

Choice D: This instruction is incorrect, as iron supplements should not be administered at mealtimes, but rather one hour before or two hours after meals. This is because iron absorption is reduced by food, especially dairy products, antacids, or calcium supplements. The parents should be instructed to give the medication on an empty stomach or with a small amount of food if it causes nausea.

Choice A: Contact isolation is not appropriate for a child who has measles, which is a highly contagious viral infection that causes fever, rash, cough, runny nose, and red eyes. Contact isolation is used for patients who have infections that can be spread by direct or indirect contact with the patient or their environment, such as wound infections, scabies, or Clostridioides difficile. Contact isolation requires wearing gloves and gowns and using dedicated equipment.

Choice B: Airborne isolation is appropriate for a child who has measles, as it is used for patients who have infections that can be spread by small droplets that can remain suspended in the air and travel over long distances, such as tuberculosis, chickenpox, or measles. Airborne isolation requires wearing a respirator mask and placing the patient in a negative pressure room with the door closed.

Choice C: Protective environment isolation is not appropriate for a child who has measles, as it is used for patients who have compromised immune systems and are at high risk of acquiring infections from others, such as transplant recipients, cancer patients, or patients receiving immunosuppressive therapy. Protective environment isolation requires wearing gloves, gowns, masks, and eye protection and placing the patient in a positive pressure room with high-efficiency particulate air (HEPA) filters.

Choice D: Droplet isolation is not appropriate for a child who has measles, as it is used for patients who have infections that can be spread by large droplets that can travel up to 6 feet from the source, such as influenza, pertussis, or meningitis. Droplet isolation requires wearing a surgical mask and eye protection and placing the patient in a private room or cohorting with other patients with the same infection.