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Magent Static Respiratory Compliance (Cstat) Calculator
x402
Magent Static Respiratory Compliance (Cstat) Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Calculates static respiratory system compliance (Cstat in mL/cm H₂O) using the ARDS Network 2000 formula: Cstat = tidal_volume_ml / (pplat_cm_h2o - peep_cm_h2o)
Price / call$0.005
Success—
StatusUnknown
How this service works
Static respiratory-system compliance (Cstat) as in ARDS Network 2000 methods: Cstat (mL/cm H2O) = tidal_volume_ml / (pplat_cm_h2o - peep_cm_h2o). Caller supplies the three measured terms. Rejects Pplat less than or equal to PEEP. Does not invent ARDS severity bands from Cstat (Murray 1988 compliance bands are a different tool). Not a ventilator order or medical device. magent does not read the ventilator.
Output
Returns a numeric Cstat value in mL/cm H2O computed as tidal_volume_ml divided by (pplat_cm_h2o minus peep_cm_h2o). Returns an error or rejection if plateau pressure is less than or equal to PEEP, or if input values fall outside clamped physiologic ranges.
Example use cases
ICU respiratory mechanics assessment
“My ventilated patient has a tidal volume of 380 mL, plateau pressure of 26 cm H2O, and PEEP of 10 cm H2O — what is their static lung compliance?”
ARDS monitoring during weaning
“We're tracking compliance trends on an ARDS patient. Today's values are tidal volume 420 mL, Pplat 30 cm H2O, PEEP 12 cm H2O — calculate Cstat for me.”
Nursing documentation compliance check
“Before I chart, can you compute the Cstat for this patient: tidal volume 500 mL, plateau pressure 22 cm H2O, PEEP 5 cm H2O?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/cstatWhen to prefer
Use this endpoint when you need a single, standards-based static compliance calculation following the exact ARDS Network 2000 methodology and you already have the three measured ventilator values in hand. Prefer it over manual calculation to avoid arithmetic errors and to get consistent, validated results. Do not use if you need dynamic compliance, Murray Score ARDS severity banding, or if you expect the service to read ventilator data directly.
Side effects
- Pplat ≤ PEEP: request rejected as physiologically invalid (cannot divide by zero or negative)
- tidal_volume_ml outside 50–2000 mL range: clamped or rejected
- pplat_cm_h2o outside 5–80 cm H2O range: clamped or rejected
- peep_cm_h2o outside 0–40 cm H2O range: clamped or rejected
- missing required query parameters: HTTP 400 or validation error
- payment not provided or insufficient: HTTP 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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