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Practice sample: USMLE Step 2 CK and NBME internal medicine shelf

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Practice sample: USMLE Step 2 CK and NBME internal medicine shelf

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Question 1 of 5

Question 1.A 28-year-old man is in the operating room for a ruptured spleen after a motor vehicle collision and has received 9 units of packed red blood cells and 6 units of fresh frozen plasma over 90 minutes. The anesthesiologist notes new diffuse oozing at the surgical field, prolonged QT interval on the monitor, and a fall in blood pressure. Laboratory studies drawn now show ionized calcium 0.76 mmol/L (reference 1.10-1.30), potassium 4.4 mmol/L, and magnesium 1.9 mg/dL. Body temperature is 35.8°C. Which of the following best explains the ionized calcium abnormality and the most appropriate immediate treatment?

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Step 2 CK & IM Shelf Exam Prep is built as exam practice, not a generic sales page. This uses the same timed runner enrolled students use for practice.

  • Available bank: 2,109 questions
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Topics in this sample
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