Murray Lung Injury Score
Murray Lung Injury Score (Murray 1988): the number of consolidated chest-x-ray quadrants, the PaO2/FiO2 ratio, PEEP, and respiratory-system compliance are each banded 0-4 and averaged.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- CXR quadrants with consolidation
- 0
- PaO2
- 300 mmHg
- FiO2
- 0.4
- PEEP
- 5 cmH2O
- Compliance
- 80 mL/cmH2O
Result: Murray LIS 0.00: no lung injury per Murray 1988.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0
- No lung injury per Murray 1988.
- 0.1-2.5
- Mild-to-moderate lung injury per Murray 1988.
- >2.5
- Severe lung injury per Murray 1988; ECMO referral per ELSO 2017 may be appropriate.
What you enter
- CXR quadrants with consolidation (0-4)
- PaO2
- FiO2 (0-1)
- PEEP
- Compliance
How this is calculated
Murray JF, Matthay MA, Luce JM, Flick MR. An expanded definition of the adult respiratory distress syndrome. Am Rev Respir Dis. 1988;138(3):720-723. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.