Berlin ARDS Severity Classification — free guideline decision tool
The Berlin definition grades ARDS as mild, moderate or severe by PaO₂/FiO₂ on PEEP/CPAP ≥5 cmH₂O.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| PaO₂/FiO₂ (with PEEP/CPAP ≥ 5) | 150 mmHg |
|---|
→ClassModerate ARDS
- P/F：150 mmHg
- Mortality (Berlin 2012 pooled)：32%
- 2024 global definition：The 2024 global definition (Matthay) adds high-flow oxygen ≥30 L/min, SpO₂/FiO₂ ≤315 and ultrasound imaging; this tool uses Berlin 2012.
Common questions
What is Berlin ARDS Severity Classification?
The Berlin definition grades ARDS as mild, moderate or severe by PaO₂/FiO₂ on PEEP/CPAP ≥5 cmH₂O.
How is Berlin ARDS Severity Classification calculated? What is the core formula?
On PEEP/CPAP ≥5 cmH₂O: mild 200<P/F≤300, moderate 100<P/F≤200, severe P/F≤100. Enter each item; the result is calculated automatically and read with the clinical picture.
When is Berlin ARDS Severity Classification used?
ARDS diagnosis and severity grading.
How should Berlin ARDS Severity Classification results be interpreted?
Berlin 2012: mortality 27%, 32% and 45% for mild, moderate and severe. The 2024 global definition adds high-flow oxygen ≥30 L/min, SpO₂/FiO₂ ≤315 and ultrasound; this tool uses Berlin 2012.
What are the key clinical points for Berlin ARDS Severity Classification?
Onset within 1 week, bilateral opacities, non-cardiogenic, PEEP ≥5. Graded by P/F. The 2024 global definition adds SpO₂/FiO₂ and ultrasound.
What are the limits and cautions when using Berlin ARDS Severity Classification?
P/F must be measured on PEEP ≥5. Exclude purely cardiogenic pulmonary oedema. For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
Does Berlin ARDS Severity Classification upload patient data? Where is it calculated?
Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
How is Berlin ARDS Severity Classification calculated in practice? Can you show a worked example?
Inputs: PaO₂/FiO₂ (with PEEP/CPAP ≥ 5) 150 mmHg → Result: Class Moderate ARDS（P/F: 150 mmHg, Mortality (Berlin 2012 pooled): 32%, 2024 global definition: The 2024 global definition (Matthay) adds high-flow oxygen ≥30 L/min, SpO₂/FiO₂ ≤315 and ultrasound imaging; this tool uses Berlin 2012.）
Run Berlin ARDS Severity Classification now
The Berlin definition grades ARDS as mild, moderate or severe by PaO₂/FiO₂ on PEEP/CPAP ≥5 cmH₂O.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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