What does P/F stand for?

PaO2/FIO2 (oxygenation index; respiratory care)

This definition appears very rarely and is found in the following Acronym Finder categories:

Science, medicine, engineering, etc.

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Samples in periodicals archive:

I am assuming a reasonable familiarity with blood gasses by the reader and will comment on an essential use of the blood gas for assessing mechanically ventilated patients, The PaO2/FiO2 index or, (P/F ratio).

Bedside assessment of the mechanically ventilated patient I

The PaO2/FiO2 index (P/F ratio), quantifies the ratio of arterial oxygen tension to available oxygen concentration.

Clinical assessment of the mechanically ventilated patient: a ...

When you want to calculate oxygen tension based indices such as the A-a Gradient, PAO2/PaO2 ratio or PaO2/FIO2 ratio the non-corrected results should be used.

ABG temperature correction: to correct or not to correct; that is the ...