AccessMedicine's Case of the Week: Acid-Base Disturbances Case #31

From: AccessMedicine

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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. 

Laboratory Data:

ABG

Basic Metabolic Panel

pH

7.25

NA

135 mEq/L

PaCO2

23 mm Hg

K

5.2 mEq/L

PaO2

77 mm Hg

Cl

102 mEq/L

HCO3

10 mEq/L

CO2

10 mEq/L

BUN

50 mg/dL

Cr

3.1 mg/dL

 

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


Click HERE  to answer the questions and complete the case!

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Julie Grishaw, ACNP

Senior Editor, McGraw-Hill Education

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