A 45-Year-Old Woman Comes to the Physician Because of Frequent

question 312

Multiple Choice

A 45-year-old woman comes to the physician because of frequent urination for the last six months.  She states that she has been waking up several times at night to urinate.  These symptoms also disrupt her professional work schedule.  She has been taking lithium to treat a mood disorder for the past 5 years.  She has tried many other drugs for her mood disorder, but none have been as successful as lithium.  She is adherent to her treatment and has her lithium level measured regularly.  She had one episode of mild lithium toxicity two years ago.
Her physical examination is unremarkable.
Laboratory results are as follows:

Which of the following would be the best initial treatment for this patient?

• A)Amiloride
• B)DDAVP
• C)Fluid restriction
• D)High dietary solute intake
• E)NSAIDs

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Definitions:

Complementary Goods

Products or services that are typically used together, where the increase in consumption of one leads to an increase in consumption of the other.

Good X

A term used to denote a specific product or commodity in economic models.

Substitute Goods

Products or services that can be used in place of each other, where an increase in the price of one leads to an increase in demand for the other.

Demand

Demand refers to the quantity of a product or service that consumers are willing and able to purchase at various prices during a given period.