Partial Pressure of Oxygen (pO2)

Arterial Blood Gas

Normal Reference Ranges

Adult

75 - 100 mmHg

Pediatric

75 - 100 mmHg

Clinical Significance

Measures oxygen dissolved in the blood plasma, determining the effectiveness of oxygenation from the lungs.

Causes of High

  • Supplemental oxygen administration

Causes of Low

  • Hypoxemia (Pneumonia, PE, ARDS, Hypoventilation)