Critical Care · Pulmonology
Horowitz Index (P/F Ratio) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
Complete all required inputs to calculate the score.
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)
View source