Case:
An 18-year-old man with a past medical history of major depression is found comatose at home. He was last seen normal 2 days prior. He is noted to be hypotensive and tachycardic, and his skin is cool and clammy. Before intubation, an ABG is obtained, the results of which are listed below. He is oliguric, with scant red-tinged urine in his catheter bag.
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Laboratory Data: |
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ABG |
Basic Metabolic Panel |
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pH |
7.25 |
NA |
135 mEq/L |
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PaCO2 |
23 mm Hg |
K |
5.2 mEq/L |
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PaO2 |
77 mm Hg |
Cl |
102 mEq/L |
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HCO3 |
10 mEq/L |
CO2 |
10 mEq/L |
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BUN |
50 mg/dL |
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Cr |
3.1 mg/dL |
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Question 1 of 3:
What is the primary acid-base disorder in this patient?
A - Metabolic acidosis
B - Metabolic alkalosis
C - Respiratory acidosis
D - Respiratory alkalosis
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