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Fick 1870 Cardiac Output Calculator
x402
Fick 1870 Cardiac Output 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).
Computes cardiac output (L/min) using the Fick 1870 formula from measured VO2, arterial oxygen content, and mixed-venous oxygen content
Price / call$0.005
Success—
StatusUnknown
How this service works
Fick 1870 cardiac output: CO (L/min) = VO2 (ml/min) / (CaO2 - CvO2) with contents in ml/L (ml/dL x10). Caller supplies the three measured terms. Does not estimate VO2 from BSA or apply Hufner Hb factors. Rejects CaO2 <= CvO2. Not a catheter order, shock diagnosis, or medical device. magent does not sample blood.
Output
Returns the calculated cardiac output in L/min computed as CO = VO2 / (CaO2 - CvO2), using inputs normalized to ml/L. Rejects requests where CaO2 is not greater than CvO2.
Example use cases
ICU hemodynamic assessment workflow
“My patient's Swan-Ganz catheter data is in: VO2 measured at 210 ml/min, CaO2 is 195 ml/L, CvO2 is 140 ml/L — can you run the Fick 1870 calculation and tell me the cardiac output?”
Cardiology consult documentation
“I need to document a Fick cardiac output for a cardiology consult note — VO2 is 180 ml/min, arterial O2 content 19.5 ml/dL, and mixed-venous O2 content 14 ml/dL.”
Teaching case hemodynamic calculation
“For this teaching case, compute the cardiac output via the Fick principle: oxygen consumption is 300 ml/min, CaO2 is 220 ml/L, and CvO2 is 160 ml/L.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/fickWhen to prefer
Use this endpoint when you have all three directly measured Fick terms (VO2, CaO2, CvO2) and need a strict 1870 Fick cardiac output computation without BSA estimation or Hüfner correction. Prefer this over general hemodynamic APIs when you need reproducible, formula-pure Fick results suitable for clinical documentation or research pipelines.
Side effects
- CaO2 <= CvO2: request rejected because arteriovenous difference must be positive
- VO2 out of range (below 50 or above 2000 ml/min): clamped or rejected per magent validation
- CaO2 out of range (below 50 or above 400 ml/L equivalent): clamped or rejected
- CvO2 out of range (below 20 or above 350 ml/L equivalent): clamped or rejected
- Both ml/L and ml/dL variants supplied for the same parameter: rejected as ambiguous
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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