After receiving five doses of filgrastim, the nurse notes that the clients white blood cell count has increased from 2,500/mm3 to 5,000/mm3. Which action would the nurse take?

Continuous rubbing of the back of the neck can be a side effect of antipsychotic medication, known as acute dystonia. Benztropine is an anticholinergic medication that can effectively treat acute dystonia. Therefore, the nurse should give a PRN prescription for benztropine to relieve the client's discomfort. Options a, b, and d do not address the underlying issue of acute dystonia and are not the best interventions for this particular situation.

Levothyroxine is a thyroid hormone replacement medication used to treat hypothyroidism. To ensure proper absorption and effectiveness of the medication, it should be taken on an empty stomach, preferably in the morning, and at least 30 minutes before eating. Therefore, when the client indicates that they understand the need to take the medication on an empty stomach, it indicates that the education was effective.

Option b, "Avoid the use of iron supplements," is also important education for clients taking levothyroxine because iron supplements can interfere with the absorption of the medication. However, it is not the best indicator of effective education because the question asks for the statement that indicates education was effective, and option a is a more direct and specific response to the medication.

Option c, "Administer levothyroxine at bedtime," is not accurate information because the medication should be taken in the morning on an empty stomach.

Option d, "Consume foods that are high in iodine," is not recommended for clients taking levothyroxine because high amounts of iodine can interfere with thyroid function. Therefore, this statement indicates a need for further education.