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Questions and Answers
What is the drug of choice for hypothyroidism?
What is the drug of choice for hypothyroidism?
In hypothyroidism, TSH levels are low.
In hypothyroidism, TSH levels are low.
False
In hyperthyroidism, TSH levels are low and T3/T4 levels are high.
In hyperthyroidism, TSH levels are low and T3/T4 levels are high.
True
What is the conversion process from T4 to T3?
What is the conversion process from T4 to T3?
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A TSH level of _____ or higher indicates the need for treatment in hypothyroidism.
A TSH level of _____ or higher indicates the need for treatment in hypothyroidism.
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The typical dosage of Synthroid for adults is _____ mcg/kg/day.
The typical dosage of Synthroid for adults is _____ mcg/kg/day.
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Study Notes
Thyroid Hormone Regulation
- Hypothalamus produces TRH, which stimulates the pituitary to release TSH, which in turn stimulates the thyroid gland to produce T4.
- T4 is converted to T3, the active metabolite, by the thyroid gland.
Hypothyroidism
- Characterized by high TSH levels and low T4 levels.
- Subclinical hypothyroidism may have normal T4 levels.
- Treatment is recommended if TSH level is above 10, starting with low dose.
Hyperthyroidism
- Characterized by low TSH levels and high T3/T4 levels.
- Subclinical hyperthyroidism may have normal T4 levels.
Hypothyroid Medications
- Synthroid is a synthetic preparation of T4 and the drug of choice for hypothyroidism.
- Synthroid is converted to T3 in the body.
- The recommended adult dosage is 1.6-1.8 mcg/kg/day.
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Description
Test your knowledge on the regulation of thyroid hormones, including hypothyroidism and hyperthyroidism
