Hyperthyroidism Pharmacologic Therapy Quiz

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Which form of pharmacotherapy is considered the treatment of choice for hyperthyroidism?

Thyroid hormone synthesis inhibitors

Antithyroid medications

Thyroid hormone replacement therapy

Administration of the radioisotope 131I (correct)

Why is radioactive iodine therapy contraindicated during pregnancy?

It interferes with the synthesis of thyroid hormones

It may cause irreversible damage to the thyroid gland

It may lead to hypothyroidism in the fetus

It crosses the placenta (correct)

What precaution should women of childbearing age take before receiving radioactive iodine therapy?

Receive a pregnancy test (correct)

Undergo a thyroid function test

Undergo a complete blood count test

Begin thyroid hormone replacement therapy

For how long should women of childbearing age avoid conceiving following radioactive iodine treatment?

6 months Signup and view all the answers

Why is breast-feeding contraindicated for up to 6 weeks prior to radioactive iodine treatment?

It may expose the infant to radioactive iodine Signup and view all the answers

What percentage of cases does a single dose of radioactive iodine effectively treat?

80% to 90% Signup and view all the answers

What is the primary goal of radioactive iodine therapy (131I)?

To eliminate the hyperthyroid state with a single dose of radiation Signup and view all the answers

Why is radioactive iodine concentrated in the thyroid gland?

Because almost all iodine that enters the body becomes concentrated in the thyroid gland Signup and view all the answers

What is the potential consequence of an ablative dose of radioactive iodine?

Acute release of thyroid hormone and increased symptoms Signup and view all the answers

How is thyroid storm manifested?

Cardiac arrhythmias, fever, and neurologic impairment Signup and view all the answers

What is the purpose of using beta-blockers in radioactive iodine therapy?

To control symptoms of thyroid storm Signup and view all the answers

When is thyroid hormone replacement started after radioactive iodine therapy?

4 to 18 weeks after stopping antithyroid medications Signup and view all the answers

Why can TSH measurements be misleading in the early months following treatment with radioactive iodine?

Due to acute release of thyroid hormone Signup and view all the answers

What is the principal test measured at 3 to 6 weeks following administration of radioactive iodine?

Serum free T4 Signup and view all the answers

When should TSH be measured once a normal thyroid state has been established?

Every 6 to 12 months for life Signup and view all the answers

What is a major advantage of treatment with radioactive iodine compared to antithyroid medications?

Avoids many side effects associated with antithyroid medications Signup and view all the answers

Why might some patients elect to be treated with antithyroid medications rather than radioactive iodine?

Fear of radiation Signup and view all the answers

How can patients receiving radioactive iodine contaminate others?

Through saliva, urine, or radiation emitting from their body Signup and view all the answers

What is the purpose of observing patients for signs of thyroid storm after receiving an ablative dose of radioactive iodine?

To monitor for life-threatening conditions such as cardiac arrhythmias, fever, and neurologic impairment Signup and view all the answers

Why is serum free T4 the principal test measured at 3 to 6 weeks following administration of radioactive iodine?

To differentiate between persistent hyperthyroidism and transient hypothyroidism Signup and view all the answers

What precaution should women of childbearing age take before receiving radioactive iodine therapy?

Use contraception and avoid conceiving for at least 6 months prior to treatment Signup and view all the answers

Why might some patients elect to be treated with antithyroid medications rather than radioactive iodine?

Fear of radiation Signup and view all the answers

When should TSH be measured once a normal thyroid state has been established?

Every 6 to 12 months for life Signup and view all the answers

Why is radioactive iodine therapy contraindicated during pregnancy?

It crosses the placenta Signup and view all the answers

What is the primary goal of radioactive iodine therapy (131I)?

To cause destructive effects on the thyroid gland Signup and view all the answers

Why should women of childbearing age be given a pregnancy test 48 hours before administration of radioactive iodine?

To avoid potential harm to the developing fetus Signup and view all the answers

What is the potential consequence of an ablative dose of radioactive iodine?

Hypothyroidism Signup and view all the answers

Why is breast-feeding contraindicated for up to 6 weeks prior to radioactive iodine treatment?

To prevent radioactive contamination of breast milk Signup and view all the answers

Hyperthyroidism Pharmacologic Therapy Quiz

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Questions and Answers

Which form of pharmacotherapy is considered the treatment of choice for hyperthyroidism?

Why is radioactive iodine therapy contraindicated during pregnancy?

What precaution should women of childbearing age take before receiving radioactive iodine therapy?

For how long should women of childbearing age avoid conceiving following radioactive iodine treatment?

Why is breast-feeding contraindicated for up to 6 weeks prior to radioactive iodine treatment?

What percentage of cases does a single dose of radioactive iodine effectively treat?

What is the primary goal of radioactive iodine therapy (131I)?

Why is radioactive iodine concentrated in the thyroid gland?

What is the potential consequence of an ablative dose of radioactive iodine?

How is thyroid storm manifested?

What is the purpose of using beta-blockers in radioactive iodine therapy?

When is thyroid hormone replacement started after radioactive iodine therapy?

Why can TSH measurements be misleading in the early months following treatment with radioactive iodine?

What is the principal test measured at 3 to 6 weeks following administration of radioactive iodine?

When should TSH be measured once a normal thyroid state has been established?

What is a major advantage of treatment with radioactive iodine compared to antithyroid medications?

Why might some patients elect to be treated with antithyroid medications rather than radioactive iodine?

How can patients receiving radioactive iodine contaminate others?

What is the purpose of observing patients for signs of thyroid storm after receiving an ablative dose of radioactive iodine?

Why is serum free T4 the principal test measured at 3 to 6 weeks following administration of radioactive iodine?

What precaution should women of childbearing age take before receiving radioactive iodine therapy?

Why might some patients elect to be treated with antithyroid medications rather than radioactive iodine?

When should TSH be measured once a normal thyroid state has been established?

Why is radioactive iodine therapy contraindicated during pregnancy?

What is the primary goal of radioactive iodine therapy (131I)?

Why should women of childbearing age be given a pregnancy test 48 hours before administration of radioactive iodine?

What is the potential consequence of an ablative dose of radioactive iodine?

Why is breast-feeding contraindicated for up to 6 weeks prior to radioactive iodine treatment?

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