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ATRIA Hemorrhage Risk Score Calculator
x402
ATRIA Hemorrhage Risk Score Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Computes the Fang 2011 ATRIA bleeding risk score for patients on anticoagulation therapy based on five clinical factors: anemia, severe renal disease, age, prior hemorrhage, and hypertension.
Price / call$0.005
Success—
StatusUnknown
How this service works
Fang 2011 ATRIA hemorrhage score: anemia caller flag 3 (paper Hb <13 g/dL men or <12 g/dL women); severe renal disease (eGFR <30 or dialysis) caller flag 3; age >=75 scores 2; prior hemorrhage 1; diagnosed hypertension 1. Max 10. Score 0-3 low, 4 intermediate, 5-10 high. Not a diagnosis. Not a warfarin order. Not HAS-BLED. magent does not measure hemoglobin or compute eGFR.
Output
Returns the numeric ATRIA hemorrhage score (0–10) and the corresponding risk category: low (0–3), intermediate (4), or high (5–10). Does not provide a clinical diagnosis or treatment recommendation; caller is responsible for supplying anemia and renal disease flags based on measured lab values.
Example use cases
Pre-anticoagulation bleeding risk screening
“I need the ATRIA hemorrhage score for a 76-year-old woman who has anemia and hypertension but no prior bleeds and no severe renal disease — is she low, intermediate, or high risk?”
Renal patient on anticoagulation risk check
“Score this 82-year-old male patient for ATRIA hemorrhage risk: he's on dialysis, no anemia flagged, has a history of prior hemorrhage, and has hypertension.”
Low-risk younger patient confirmation
“What's the ATRIA bleeding risk score for a 65-year-old patient with hypertension only — no anemia, no severe renal disease, no prior hemorrhage?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/atriaWhen to prefer
Use this endpoint when you need a fast, standardized ATRIA (Fang 2011) hemorrhage risk score for a patient being considered for anticoagulation therapy. Prefer this over HAS-BLED or other bleeding scores when the clinical context specifically calls for the ATRIA framework. The caller must supply pre-computed anemia and renal disease flags — do not use this endpoint if raw lab values (hemoglobin, eGFR) still need to be interpreted into boolean flags.
Side effects
- Missing required query parameters (anemia, severe_renal_disease, age, prior_hemorrhage, hypertension) returns an error
- Age outside valid range (18–120) may return a validation error
- Boolean fields passed as strings instead of true/false may cause parsing errors
- Payment not included or failed x402 flow returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/atria",
"count": 2,
"items": [
{
"score": 0,
"formula": "atria",
"citation": {
"id": "fang-2011",
"doi": "10.1016/j.jacc.2011.03.031",
"pmid": "21757117",
"title": "A new risk scheme to predict warfarin-associated hemorrhage: the ATRIA (Anticoagulation and Risk Factors in Atrial Fibrillation) Study",
"source": "J Am Coll Cardiol. 2011;58(4):395-401",
"authors": "Fang MC, Go AS, Chang Y, et al."
},
"age_years": 60,
"max_score": 10,
"risk_band": "low",
"components": [
{
"factor": "anemia",
"points": 0,
"present": false
},
{
"factor": "severe_renal_disease",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "age_ge_75",
"points": 0,
"present": false
},
{
"factor": "prior_hemorrhage",
"points": 0,
"present": false
},
{
"factor": "hypertension",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "ATRIA = anemia (3) + severe_renal_disease (3) + age_ge_75 (2) + prior_hemorrhage (1) + hypertension (1); max 10; 0-3 low, 4 intermediate, 5-10 high"
},
{
"score": 0,
"formula": "atria",
"citation": {
"id": "fang-2011",
"doi": "10.1016/j.jacc.2011.03.031",
"pmid": "21757117",
"title": "A new risk scheme to predict warfarin-associated hemorrhage: the ATRIA (Anticoagulation and Risk Factors in Atrial Fibrillation) Study",
"source": "J Am Coll Cardiol. 2011;58(4):395-401",
"authors": "Fang MC, Go AS, Chang Y, et al."
},
"age_years": 60,
"max_score": 10,
"risk_band": "low",
"components": [
{
"factor": "anemia",
"points": 0,
"present": false
},
{
"factor": "severe_renal_disease",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "age_ge_75",
"points": 0,
"present": false
},
{
"factor": "prior_hemorrhage",
"points": 0,
"present": false
},
{
"factor": "hypertension",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "ATRIA = anemia (3) + severe_renal_disease (3) + age_ge_75 (2) + prior_hemorrhage (1) + hypertension (1); max 10; 0-3 low, 4 intermediate, 5-10 high"
}
]
}
}Tags
x402
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