Question

A 35-year-old woman with primary hypothyroidism on levothyroxine 100 micrograms daily becomes pregnant. What is the most appropriate adjustment?

Accepted Answer

Increase levothyroxine dose by ~25-30% and monitor TSH

Answer

Stop levothyroxine in the first trimester

Answer

Switch to liothyronine

Answer

No change until postpartum

Answer

Reduce the dose to avoid fetal hyperthyroidism

Practice question

A 35-year-old woman with primary hypothyroidism on levothyroxine 100 micrograms daily becomes pregnant. What is the most appropriate adjustment?