A nurse is teaching a parent of a toddler about administering digoxin.

Which of the following statements by the parent indicates an understanding of the teaching?

Choice A rationale

Sealing soft toys in a plastic bag for 14 days is a measure used to control the spread of lice, not impetigo.

Choice B rationale

Soaking hairbrushes in boiling water for 10 minutes is a measure used to disinfect items that may be

contaminated with fungal spores, not bacteria causing impetigo.

Choice C rationale

Acyclovir is an antiviral medication used to treat herpes simplex virus infections, not bacterial infections like impetigo.

Choice D rationale

Applying a bactericidal ointment to lesions is a common treatment for impetigo, which is a bacterial skin infection.

The correct answer is choice c. Sunken anterior fontanel.

Choice A rationale:

A heart rate of 162/min in a 2-month-old infant can be within the upper range of normal, especially if the infant is crying or agitated. While it is important to monitor, it is not the most critical finding in this context.

Choice B rationale:

A negative doll’s eye reflex (oculocephalic reflex) can indicate neurological issues, but it is not directly related to heart failure or the administration of furosemide.

Choice C rationale:

A sunken anterior fontanel indicates dehydration, which is a critical concern for an infant receiving furosemide, a diuretic that can lead to significant fluid loss. Dehydration can exacerbate heart failure and lead to severe complications.

Choice D rationale:

A potassium level of 5.1 mEq/L is slightly elevated but not immediately life-threatening. It requires monitoring and potential intervention but is not the most urgent issue compared to dehydration.

Monitoring for dehydration is crucial in infants on diuretics like furosemide, making the sunken anterior fontanel the priority finding.