Deck 32: Thyroid and Antithyroid Drugs

Question 1

Which drugs should be avoided while taking thyroid replacement preparations?

A)Vitamin supplements
B)Antibiotics
C)Anticoagulants
D)b-Blockers

Answer 1

Anticoagulants

Question 2

Which condition may be caused by low levels of thyroid hormone in youth?

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

Answer 2

Cretinism

Question 3

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 would be best for the nurse to say 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."

Answer 3

"It's better not to switch brands until we check with your doctor."

Question 4

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

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

Question 5

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 paresthesia
C)Tachycardia, dysrhythmias, weight loss, and fever
D)Skin pigment changes, bleeding, and menstrual irregularities

Question 6

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

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

Question 7

A patient has been diagnosed with primary hypothyroidism.
Which statement accurately describes this condition?

A)The hypothalamus is not secreting thyrotropin-releasing hormone; 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 8

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 milligrams,not in micrograms.Calculate the milligram equivalent dose of 75 micrograms.

Question 9

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 a more natural form of drug would be personally preferred.What is the nurse's best explanation to the patient for the use of levothyroxine?

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 10

When teaching a patient on antithyroid medication about diet,which direction should be included?

A)Use iodized salt when cooking.
B)Avoid foods containing iodine.
C)Increase fluid intake to 2 500 mL per day.
D)Increase intake of sodium- and potassium-containing foods.

Question 11

A patient is taking propylthiouracil for hyperthyroidism and asks the nurse how this medication works.
In answer to the patient's question,the nurse tells the patient that propylthiouracil

A)Blocks the action of thyroid hormone
B)Impedes the formation of thyroid hormone
C)Destroys overactive cells in the thyroid gland
D)Inactivates already existing thyroid hormone in the bloodstream

Question 12

A patient has been diagnosed with hypothyroidism and has started thyroid replacement therapy with levothyroxine (Synthroid).After 1 week,the patient tells the nurse that she feels no better.The nurse would best tell the patient that

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

Question 13

Which symptoms 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