Critical Care · Pulmonology
Horowitz Index (P/F Ratio) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
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Formula inputs
- horowitz pao2 mmhg (mmHg)Accepted range: 20 to 600
- horowitz fio2 fraction (fraction)Accepted range: 0.21 to 1
Primary source
ARDS Berlin definition P/F ratio thresholds. DOI: 10.1001/jama.2012.5669. PMID: 22797452. Scope: acute respiratory distress syndrome severity stratification using PaOâ‚‚/FiOâ‚‚ with appropriate PEEP criteria in clinical practice. (2012)
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