CHA₂DS₂-VASc

Stroke risk in atrial fibrillation.

How to use

Call with the inputs below. Boolean inputs are optional (absent = false). Returns the value, an interpretation, and a breakdown. Deterministic — no network call.

Parameters

Name	Type		Description
chf	boolean	optional	Congestive heart failure / LV dysfunction
hypertension	boolean	optional	Hypertension
age	number	required	Age — unit: years
diabetes	boolean	optional	Diabetes mellitus
stroke_tia	boolean	optional	Prior stroke/TIA/thromboembolism
vascular_disease	boolean	optional	Vascular disease (MI, PAD, aortic plaque)
sex	enum(male \| female)	required	Sex

Example input

{
  "chf": true,
  "hypertension": true,
  "age": 76,
  "diabetes": false,
  "stroke_tia": false,
  "vascular_disease": false,
  "sex": "female"
}

Example output

{
  "calculator": "CHA₂DS₂-VASc",
  "category": "Cardiovascular",
  "value": "5 points",
  "interpretation": "Elevated risk — oral anticoagulation recommended",
  "severity": "high",
  "references": [
    "Lip GYH et al. 2010; ESC AF guidelines"
  ]
}

Call it (MCP tools/call)

{
  "method": "tools/call",
  "params": {
    "name": "calc_chadsvasc",
    "arguments": {
      "chf": true,
      "hypertension": true,
      "age": 76,
      "diabetes": false,
      "stroke_tia": false,
      "vascular_disease": false,
      "sex": "female"
    }
  }
}

Endpoint: POST https://clinical-mcp.mcharge.in/mcp (Streamable HTTP).

References

Lip GYH et al. 2010; ESC AF guidelines