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15 Cards in this Set
- Front
- Back
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Name five drugs that cause thyroid disorders.
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Amiodarone (can cause hypo- and hyper-)
Salicylates (doses >2grams/day --> hypo-) Anticonvulsants (lower total T4) Lithium (hypo- and thyrotoxicosis) Interferon-alpha (mostly hypo-) |
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Should levothyroxine be taken on a full or empty stomach?
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empty stomach
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What are two important drug interactions with levothyroxine?
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Warfarin - patients need more warfarin
Digoxin - lower doses required |
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Are different levothyroxine products interchangable?
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No.
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What is the dosing for levothyroxine?
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1.6-1.7 mcg/kg/day (100-125 mcg)
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After initiating therapy with levothyroxine, when should you recheck the patients TSH levels?
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in 6-8 weeks
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In what increments should you adjust levothyroxine?
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12.5-25 mcg/day
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What happens if you suppress TSH to below normal?
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Osteoporosis, cardiac toxicity
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In a pregnant patient, how often should you monitor their FT4 and TSH levels?
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Monthly during the 1st trimester
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True or False:
In a patient with hypothyroidism, concurrent hyperlipidemia gets worse with thyroid treatment. |
False: hyperlipidemia often normalizes with treatment.
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In a patient who is hyperthyroid, do they need more or less warfarin?
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Less because the effects are exaggerated.
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In a patient who is hyperthyroid, do they need more or less digoxin?
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More because higher amounts are required while thyrotoxic.
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What drug is preferred for thyroid storm and in pregnancy?
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PTU
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What is the preferred drug for hyperthyroidism?
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Methimazole
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How long do you treat hyperthyroidism?
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1-2 years
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