A PaO2 test measures oxygen pressure in arterial blood to help guide treatment for respiratory issues. This test is part of an arterial blood gas (ABG) test, which also measures other components like ...

Patients with COPD who travel to high altitudes have an estimated PaO2 decrease of 0.84 kPa with each 1000 meter of altitude gain. High-altitude travel in patients with chronic obstructive pulmonary ...