A 55-Year-Old Man Is Brought to the Emergency Department by a Friend

question 216

Multiple Choice

A 55-year-old man is brought to the emergency department by a friend because of progressive confusion over the past two weeks. He is unable to provide any history. His vital signs are within normal limits. He appears lethargic and is only oriented to person. Oral mucosa is moist. There is no jugular venous distention. A basic metabolic panel shows a serum sodium concentration of 115 mEq/L but is otherwise normal.A chest x-ray reveals a hilar mass with adenopathy on the left side.  Which of the following additional laboratory abnormalities are most likely to be present in this patient?

• A)A
• B)B
• C)C
• D)D

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Definitions:

MPs

Abbreviation for Members of Parliament, who are elected to represent constituencies in the legislative body of a country.

Profit-Maximizing Equilibrium

The point at which a firm achieves the highest possible profit, where marginal cost equals marginal revenue.

Least Costly Combination

An economic principle that firms use to minimize costs while combining different factors of production to produce a given output.

Maximizing Profits

The goal of businesses to make the highest possible profit, often by increasing revenue, reducing costs, or both.