Partial Pressure Arterial Oxygen to Fraction Inspired Oxygen Ratio Measurement

**Semantic type:** Laboratory Procedure

**Definition:** The determination of the ratio of the pressure of oxygen dissolved in arterial blood to the percentage oxygen of an inhaled mixture of gasses in a biological specimen.

**Synonyms:** - PAO2/FIO2 - PO2FIO2 - PO2FIO2 - PP Arterial O2/Fraction Inspired O2 - PP Arterial O2/Fraction Inspired O2 - PP Arterial O2/Fraction Inspired O2