ATI LPN
Pharmacology and the Nursing Process 10th Edition Test Bank
Chapter 31 : Thyroid and Antithyroid Drugs Questions
Question 1 of 5
During a teaching session for a patient on antithyroid drugs, the nurse will discuss which dietary instructions?
Correct Answer: B
Rationale: Antithyroid drugs work best when iodine intake is minimized, as iodine-rich foods can reduce drug effectiveness. Iodized salt, fluid restriction, and increased sodium/potassium intake are not recommended.
Question 2 of 5
A patient who is taking propylthiouracil for hyperthyroidism wants to know how this medicine works. Which explanation by the nurse is accurate?
Correct Answer: B
Rationale: Propylthiouracil inhibits thyroid hormone synthesis by blocking iodine incorporation, slowing hormone formation. It does not promote hormone formation, destroy cells, or inactivate existing hormone.
Question 3 of 5
A 19-year-old student was diagnosed with hypothyroidism and has started thyroid replacement therapy with levothyroxine. After 1 week, she called the clinic to report that she does not feel better. Which response from the nurse is correct?
Correct Answer: B
Rationale: Levothyroxine takes several weeks to achieve full therapeutic effects as it gradually restores thyroid hormone levels. Surgery is not typically required, and diet or adherence issues are secondary considerations.
Question 4 of 5
A patient, newly diagnosed with hypothyroidism, has received a prescription for thyroid replacement therapy. The nurse will instruct the patient to take this medication at which time of day?
Correct Answer: A
Rationale: Taking levothyroxine in the morning minimizes the risk of insomnia, which can occur due to its stimulating effects. Evening or bedtime dosing may disrupt sleep.
Question 5 of 5
When reviewing the laboratory values of a patient who is taking antithyroid drugs, the nurse will monitor for which adverse effect?
Correct Answer: B
Rationale: Antithyroid drugs like propylthiouracil can cause bone marrow suppression, leading to decreased white blood cell counts (e.g., agranulocytosis). Glucose, red blood cell, and platelet counts are not typically affected.