Arterial Blood Gas Analysis · Pathology

A low PaO2 on ABG primarily indicates:

  1. Hypercapnia
  2. Arterial hypoxemia
  3. Metabolic alkalosis
  4. Renal failure
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Correct answer: Arterial hypoxemia

Low PaO2 indicates hypoxemia, reflecting inadequate oxygenation of arterial blood. It may result from ventilation-perfusion mismatch or lung disease.

Difficulty: Medium Question 12 of 20

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