What does P/F Ratio do that other Health pages on this site do not?

FiO2 as fraction (0.21) or percent (21). ARDS: ≤300 mild, ≤200 moderate, <100 severe. Not advice. Short version: PaO2/FiO2 with ARDS banding.

Does P/F Ratio upload my file or text to Tool-You servers?

No. P/F Ratio runs in this browser tab. Files stay on the device. Limit note: PaO2 > 0; FiO2 as 0–1 or 1–100%. Not advice.

Should I use Blood Pressure Category instead of P/F Ratio?

Use P/F Ratio when you need PaO2/FiO2 with ARDS banding. Use Blood Pressure Category when you need Adult ACC/AHA 2017 banding. They share a category (Health) but not the same job.

What are the limits of P/F Ratio?

PaO2 > 0; FiO2 as 0–1 or 1–100%. Not advice. Also: FiO2 as fraction (0.21) or percent (21). ARDS: ≤300 mild, ≤200 moderate, <100 severe. Not advice.

P/F Ratio

Q: Does P/F Ratio upload my file or text to Tool-You servers?

No. P/F Ratio runs in this browser tab. Files stay on the device. Limit note: PaO2 > 0; FiO2 as 0–1 or 1–100%. Not advice.

PaO2/FiO2 with ARDS banding.

FiO2 as fraction (0.21) or percent (21). ARDS: ≤300 mild, ≤200 moderate, <100 severe. Not advice.

What P/F Ratio does

FiO2 as fraction (0.21) or percent (21). ARDS: ≤300 mild, ≤200 moderate, <100 severe. Not advice.

P/F Ratio sits in the Health group on purpose. It is not Blood Pressure Category (Adult ACC/AHA 2017 banding.) and not Mean Arterial Pressure (MAP with low/normal/high tip.). Choose this page when you need PaO2/FiO2 with ARDS banding. If you stretch P/F Ratio into a neighbor’s job, the result will look wrong even though the site chrome looks the same.

How to use P/F Ratio

Confirm you need P/F Ratio, not Blood Pressure Category (Adult ACC/AHA 2017 banding.). Address: /health/pf-ratio.
Enter the numbers or dates P/F Ratio uses. PaO2/FiO2 with ARDS banding.
Read the result as P/F Ratio defines it — not as Mean Arterial Pressure (MAP with low/normal/high tip.). FiO2 as fraction (0.21) or percent (21). ARDS: ≤300 mild, ≤200 moderate, <100 severe. Not advice.
P/F Ratio is an estimate in the browser, not professional advice. PaO2 > 0; FiO2 as 0–1 or 1–100%. Not advice.
Need a different formula? Try Mean Arterial Pressure (MAP with low/normal/high tip.) instead of stretching P/F Ratio.

When not to use P/F Ratio

Skip P/F Ratio when a neighbor tool matches better — start with Blood Pressure Category or Mean Arterial Pressure — or when the description already warns the job will fail. In the tool’s own words: FiO2 as fraction (0.21) or percent (21). ARDS: ≤300 mild, ≤200 moderate, <100 severe. Not advice.

Questions about P/F Ratio

What does P/F Ratio do that other Health pages on this site do not?: FiO2 as fraction (0.21) or percent (21). ARDS: ≤300 mild, ≤200 moderate, <100 severe. Not advice. Short version: PaO2/FiO2 with ARDS banding.
Does P/F Ratio upload my file or text to Tool-You servers?: No. P/F Ratio runs in this browser tab. Files stay on the device. Limit note: PaO2 > 0; FiO2 as 0–1 or 1–100%. Not advice.
Should I use Blood Pressure Category instead of P/F Ratio?: Use P/F Ratio when you need PaO2/FiO2 with ARDS banding. Use Blood Pressure Category when you need Adult ACC/AHA 2017 banding. They share a category (Health) but not the same job.
What are the limits of P/F Ratio?: PaO2 > 0; FiO2 as 0–1 or 1–100%. Not advice. Also: FiO2 as fraction (0.21) or percent (21). ARDS: ≤300 mild, ≤200 moderate, <100 severe. Not advice.