Deck 31: Thyroid and Antithyroid Drugs

Question 1

Which of the following signs indicate a too-high dose of thyroid replacement hormone?

A)Bradycardia,somnolence,and ataxia
B)Anxiety,weight loss,and insomnia
C)Dry skin, weakness, and weight gain
D)Drowsiness,coughing,and neck pain

Answer 1

Anxiety,weight loss,and insomnia

Question 2

A patient is taking propylthiouracil for hyperthyroidism and asks the nurse how this medication works.What is the nurse's best explanation to the patient?

A)It blocks the action of thyroid hormone.
B)It impedes the formation of thyroid hormone.
C)It destroys overactive cells in the thyroid gland.
D)It inactivates already existing thyroid hormone in the bloodstream.

Answer 2

It impedes the formation of thyroid hormone.

Question 3

Which of the following drugs should be avoided while taking thyroid replacement preparations?

A)Vitamin supplements
B)Antibiotics
C)Anticoagulants
D)β-blockers

Answer 3

Anticoagulants

Question 4

Which of the following are the two thyroid hormones produced by the thyroid gland?

A)T₂ and T₃
B)Thyroxine and tri-iodothyronine
C)Levothyroxine and thyroxine
D)Thyronine and liothyronine

Question 5

A patient has been taking levothyroxine (Synthroid)for more than a decade for primary hypothyroidism.She tells the nurse that her cousin can get her the same medication in a generic form from a pharmaceutical supply company.What is the nurse's best response to the patient?

A)"That would be a great way to save money."
B)"There's no difference in brands of this medication."
C)"Switching the form of medication should never be done; once you start with a certain brand, you must stay with it."
D)"It's better not to switch brands until we check with your doctor."

Question 6

The nurse is giving morning medications.The medication administration record has an order for "levothyroxine,75 mcg." The drug dispensing cabinet contains levothyroxine tablets in milligram strengths,not in micrograms.Calculate the mg equivalent dose of 75 mcg.

Question 7

A patient,newly diagnosed with hypothyroidism,received a prescription for a thyroid drug.In addition to assessing for hypersensitivity and myocardial infarction,which of the following should the nurse also assess for before administering the thyroid drug?

A)Infections
B)Diabetes mellitus
C)Lupus erythematosus
D)Adrenal insufficiency

Question 8

Which of the following conditions is caused by low levels of thyroid hormone during youth?

A)Goiter
B)Myxedema
C)Cretinism
D)Addison's disease

Question 9

A 19-year-old university student has been diagnosed with hypothyroidism and has started thyroid replacement therapy with levothyroxine (Synthroid).After 1 week,she tells the nurse that she feels no better.What is the nurse's best response to the patient?

A)She will probably require surgery for a cure.
B)Levothyroxine does not reach peak effect for several months.
C)She probably did not take her medication as instructed.
D)Her diet may be causing absorption problems.

Question 10

Which of the following dietary instruction should be given to patients on antithyroid drugs?

A)Use iodized salt when cooking.
B)Avoid foods containing iodine.
C)Increase fluid intake to 2500 mL per day.
D)Increase intake of sodium- and potassium-containing foods.

Question 11

A patient has been diagnosed with primary hypothyroidism.Which of the following statements accurately describes this condition?

A)The hypothalamus is not secreting thyrotropin-releasing hormone (TRH);therefore,thyroid-stimulating hormone (TSH)is not released from the pituitary gland.
B)The pituitary gland is dysfunctional and is not secreting TSH.
C)The abnormality is in the thyroid gland itself.
D)The abnormality is caused by an excess intake of iodine.

Question 12

A patient with hypothyroidism is given a prescription for levothyroxine (Synthroid).When the nurse explains that levothyroxine is a synthetic form of the thyroid hormone,the patient states that he prefers to receive more natural forms of drugs.What is the nurse's best explanation to the patient?

A)The synthetic form has a stronger effect than the natural forms.
B)Levothyroxine is less expensive than the natural forms.
C)The oral form has fewer adverse effects on the gastrointestinal tract.
D)Because the half-life of levothyroxine is longer than that of the natural forms,once-a-day dosing is possible.

Question 13

The nurse is discussing thyroid replacement therapy and establishing treatment goals with a patient.What important adverse effects should the nurse discuss with the patient?

A)Edema,anemia,and hepatitis
B)Pruritus,myalgia,leukopenia,and paraesthesia
C)Tachycardia, dysrhythmias, weight loss, and fever
D)Skin pigment changes,bleeding,and menstrual irregularities