What should be monitored in a patient receiving levothyroxine?

What should be monitored in a patient receiving levothyroxine?

• A. Sleep pattern
• B. Blood glucose fluctuations
• C. Blood pressure only
• D. Signs of hyperthyroidism, including weight loss and increased heart rate

Answer: (D)

Monitoring levothyroxine therapy centers on keeping thyroid hormone levels in the normal range. The clearest signal that the dose is appropriate comes from signs of hyperthyroidism, such as weight loss and an increased heart rate. If these symptoms appear, it suggests the dose may be too high and should be adjusted downward, with lab tests like TSH (and free T4) used to confirm euthyroidism. While sleep patterns, blood glucose, and blood pressure can be affected by thyroid status, they are not the primary or most reliable indicators for adjusting levothyroxine dosing. The goal is to titrate the medication to achieve normal thyroid function and symptom control.