A 30-year-old woman comes to the physician for a follow-up examination 4 months after starting treat

Discussion in 'USMLE Step 2 CK' started by samuel, Dec 18, 2014.

  1. samuel

    samuel New Member

    A 30-year-old woman comes to the physician for a follow-up examination 4 months after starting treatment with lithium carbonate; during this period she has had a 3.2-kg (7-lb) weight gain. Her medication was prescribed soon after the birth of her son to treat racing thoughts, increased spending, and overtalkativeness; she has had difficulty sleeping for more than 2 hours nightly. Her symptoms decreased after 2 weeks of lithium carbonate therapy. She continues to take lithium carbonate (300 mg three times daily). Her temperature is 37 C (98.6 F), blood pressure is 120/80 mm Hg, and pulse is 70/min. Examination shows normal findings. The most appropriate next step is measurement of which of the following?

    A
    ) Fasting serum glucose level

    B
    ) Leukocyte count

    C
    ) Serum alkaline phosphatase activity

    D
    ) Serum creatinine level

    E
    ) Serum thyroid-stimulating hormone level

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