Q:

A 54-year-old female patient on the general floor has the following ABG results:

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A 54-year-old female patient on the general floor has the following ABG results:

pH = 7.53

pCO2 = 44 torr

HCO3 = 34 mEq/L

Which of the following is the best interpretation of these results?


  1. Acute respiratory alkalosis
  2. Acute metabolic alkalosis
  3. Compensated respiratory alkalosis
  4. Combined respiratory and metabolic alkalosis

All Answers

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This is your typical ABG interpretation question. Let’s break this one down.

The pH is elevated which means alkalosis. The PaCO2 is in the normal range. The Bicarb is elevated, which tells us that there is a metabolic issue. And since we already determined that the pH is elevated and the PaCO2 is normal, there is no compensation going on here.

So that rules out all of the other answer choices and we know that the correct answer has to be B.

The correct answer is: B. Acute metabolic alkalosis

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