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Murray Lung Injury Score (LIS) Calculator
x402
Murray Lung Injury Score (LIS) Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Computes the Murray 1988 Lung Injury Score from four clinical components (CXR quadrants, PaO2/FiO2 ratio, PEEP, and respiratory compliance) and returns a severity classification.
Price / call$0.005
Success—
StatusUnknown
How this service works
Murray 1988 lung injury score (LIS): mean of four 0–4 components (caller-assigned CXR quadrants; PaO2/FiO2 ≥300→0, 225–299→1, 175–224→2, 100–174→3, <100→4; PEEP cm H2O ≤5→0, 6–8→1, 9–11→2, 12–14→3, ≥15→4; compliance mL/cm H2O ≥80→0, 60–79→1, 40–59→2, 20–39→3, ≤19→4). LIS 0 none, 0<LIS≤2.5 mild_moderate, >2.5 severe. Not a medical device, not a Berlin ARDS diagnosis, not a ventilator order. magent does not interpret imaging.
Output
Returns the computed Lung Injury Score (LIS) as a numeric mean of the four component scores (each 0–4), plus a severity classification: 'none' (LIS = 0), 'mild_moderate' (0 < LIS ≤ 2.5), or 'severe' (LIS > 2.5).
Example use cases
ICU triage lung injury stratification
“My ICU patient has alveolar consolidation in 2 chest X-ray quadrants, a PF ratio of 220, PEEP of 8 cm H2O, and compliance of 55 mL/cm H2O — what's their Murray lung injury score and severity class?”
Serial LIS tracking during ventilator weaning
“Yesterday's Murray score used PF ratio 180, PEEP 12, compliance 30, and 3 CXR quadrants. Today it's PF ratio 260, PEEP 8, compliance 50, and 2 CXR quadrants — calculate today's LIS so I can compare for weaning progress.”
Research cohort lung injury scoring
“For a study patient: 4 chest radiograph quadrants with alveolar consolidation, PaO2/FiO2 ratio of 85, PEEP 18 cm H2O, compliance 15 mL/cm H2O — run the Murray 1988 LIS calculation and give me the numeric score and category.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/murrayWhen to prefer
Use this endpoint when you need a fast, deterministic computation of the Murray 1988 Lung Injury Score from four caller-supplied clinical values. It is not a Berlin ARDS diagnostic tool and does not interpret imaging or issue ventilator orders — it strictly performs the arithmetic scoring defined by Murray 1988. Prefer it over manual calculation when building clinical decision-support pipelines, research data pipelines, or EMR-integrated agents that need programmatic LIS computation.
Side effects
- Missing required query parameters (chest_radiograph_quadrants, pf_ratio, peep_cm_h2o, compliance_ml_cm_h2o) returns a validation error
- PF ratio outside valid range (20–800) may return an input validation error
- PEEP value outside range (0–40) may return an input validation error
- Compliance outside range (5–200) may return an input validation error
- chest_radiograph_quadrants not an integer 0–4 returns schema validation error
- Payment failure via x402 protocol returns 402 with payment details
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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