A nurse is providing teaching about digoxin administration to the parents of a toddler who has heart failure. Which of the following statements should the nurse include in the teaching?

Rationale: A. Digoxin should not be mixed with large volumes of liquid or food because if the child does not finish the entire mixture, the full dose may not be received. It should be given directly using an oral syringe, and if needed, a small amount of liquid can be used to mask the taste, ensuring the full dose is administered. B. The dose should not automatically be repeated because digoxin has a narrow therapeutic index and re-dosing can lead to toxicity. If vomiting occurs, the nurse or provider should be notified for further instructions rather than independently repeating the dose. C. Giving a small amount of water after administering digoxin helps ensure the full dose is swallowed and reduces the risk of the medication remaining in the mouth or being absorbed unevenly. This is a safe and appropriate teaching point for parents. D. Digoxin toxicity is actually worsened by hypokalemia, not excess potassium intake. In clients taking digoxin, maintaining normal potassium levels is important because low potassium increases the risk of digoxin toxicity. Potassium is not routinely restricted unless otherwise indicated.