Health
Cardiac Output by Fick Principle (CO)
Compute CO = VO₂ / (CaO₂ − CvO₂) / 10 (L/min) with the Fick principle. Requires PA-catheter mixed venous samples. VO₂ defaults to 250 mL/min. Derived from Fick 1870, StatPearls, LITFL, West, Leach 2002. Not medical advice.
json· JSON resultOpen tool
Quick start
Call this tool from your code in three languages.
cURL
curl -X POST 'https://api.elysiatools.com/en/api/tools/cardiac-output-fick' \
-H 'Content-Type: application/json' \
-d '{"hemoglobin":15,"sao2":0.97,"pao2":100,"svo2":0.75,"pvo2":40,"vo2":250,"decimalPlaces":2}'API reference
Send a POST request with your inputs as JSON. File parameters require a separate upload first.
Endpoint
HTTP
POST https://api.elysiatools.com/en/api/tools/cardiac-output-fickParameters
| Name | Type | Required | Description |
|---|---|---|---|
| hemoglobin | number | Yes | Hemoglobin concentration (g/dL). |
| sao2 | number | Yes | Arterial oxygen saturation as a fraction (0–1, e.g. 0.97 = 97%). |
| pao2 | number | Yes | Arterial PO₂ (mmHg) from ABG. |
| svo2 | number | Yes | Mixed venous O₂ saturation (0–1) from a pulmonary artery catheter. Do NOT use a peripheral venous sample. |
| pvo2 | number | Yes |
MCP integration
Add this tool to your Model Context Protocol server so AI agents can list and call it.
Server configuration
Add this block to your MCP client configuration:
mcp.json
{
"mcpServers": {
"elysiatools-cardiac-output-fick": {
"name": "cardiac-output-fick",
"description": "Compute CO = VO₂ / (CaO₂ − CvO₂) / 10 (L/min) with the Fick principle. Requires PA-catheter mixed venous samples. VO₂ defaults to 250 mL/min. Derived from Fick 1870, StatPearls, LITFL, West, Leach 2002. Not medical advice.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=cardiac-output-fick",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}List available tools
After connecting to the SSE endpoint, list the exposed tools:
tools/list
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Call this tool
Invoke the tool by its id, passing arguments built from its parameters:
tools/call
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "cardiac-output-fick",
"arguments": {
"hemoglobin": 15,
"sao2": 0.97,
"pao2": 100,
"svo2": 0.75,
"pvo2": 40,
"vo2": 250,
"decimalPlaces": 2
}
}
}Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).
Questions or issues? Contact [email protected]