Question

What PaO2 is too high?

Answer 1

Hyperoxemia can be defined as an increase in arterial oxygen partial pressure (PaO2) to a level greater than 120 mmHg (16 kPa) (1, 2). It is considered to be moderate for levels ranging between 120 and 200 mmHg, and severe if PaO2 exceeds 200 mmHg (27 kPa) (3).