A mother is concerned about signs of digoxin toxicity in her child. Which statement indicates her understanding?

The mother’s statement regarding having her son checked if he vomits indicates her understanding of digoxin toxicity because vomiting is one of the common symptoms that may suggest toxic levels of digoxin in the body. Digoxin, a medication used to treat various heart conditions, can lead to toxicity, especially in children, and signs such as nausea and vomiting are often among the first indicators that the drug is having harmful effects.

Monitoring for vomiting is an appropriate response because it can be a sign that the medication levels are too high, necessitating further evaluation and possible adjustment of treatment. This awareness shows that she understands the importance of vigilance regarding the side effects of digoxin in her child.

While the other statements might reflect some understanding of general health or medication management, they do not specifically address critical symptoms of digoxin toxicity as directly as the chosen statement does. For instance, while respiratory rates and weight gain are important health indicators, they are not the primary concerns directly related to the likelihood of digoxin toxicity. Additionally, potassium levels are crucial when managing digoxin therapy, but indicating a blanket avoidance of potassium-rich foods may not be warranted unless there is a specific reason related to the child's overall condition and laboratory results.