Question

A 65-year-old woman with known coronary artery disease presents with fatigue and weight gain. TSH is 18 mIU/L (0.4-4.0), free T4 is low. She has no heart failure symptoms. According to Canadian product monographs, what is the most appropriate initial levothyroxine dose?

Accepted Answer

25 µg once daily

Answer

1.6 µg/kg/day full replacement dose

Answer

100 µg once daily

Answer

50 µg once daily

Answer

No levothyroxine; observe and repeat TSH in 6 months

Practice question

A 65-year-old woman with known coronary artery disease presents with fatigue and weight gain. TSH is 18 mIU/L (0.4-4.0), free T4 is low. She has no heart failure symptoms. According to Canadian product monographs, what is the most appropriate initial levothyroxine dose?