A 23-Year-Old Man Is Brought to the Emergency Department by Paramedics

question 143

Multiple Choice

A 23-year-old man is brought to the emergency department by paramedics following a motor vehicle accident.  He was an unrestrained passenger in the front seat.  Several days after hospitalization, his fluid volume and plasma osmolarity are measured and illustrated in the image below (solid line, normal; dotted line, patient) . Which of the following conditions is most likely to cause the findings shown in the image?

• A)Acute gastrointestinal hemorrhage
• B)Adrenal insufficiency
• C)Diabetes insipidus
• D)Hypertonic saline infusion
• E)Primary polydipsia

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Definitions:

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