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CRUSADE In-Hospital Major Bleeding Score (NSTE-ACS)
x402
CRUSADE In-Hospital Major Bleeding Score (NSTE-ACS) 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).
Calculates the CRUSADE bleeding risk score for NSTE-ACS/NSTEMI patients using eight clinical parameters, returning the integer score, quintile band, and published in-hospital major-bleeding percentage.
Price / call$0.005
Success—
StatusUnknown
How this service works
CRUSADE in-hospital major bleeding score (Subherwal 2009 Table 4) for NSTE-ACS / NSTEMI. Points from hematocrit, caller-assigned Cockcroft–Gault CrCl, heart rate, sex, CHF, prior vascular disease, diabetes, and systolic BP. Returns integer score (max 96), quintile band, and published in-hospital major-bleeding percent. Not a medical device; magent does not compute CrCl or examine the patient.
Output
Returns an integer CRUSADE score (0–96), the corresponding quintile risk band (very low, low, moderate, high, or very high), and the Subherwal 2009 published in-hospital major-bleeding percentage associated with that band.
Example use cases
Pre-anticoagulation bleeding risk stratification
“Before starting anticoagulation for my NSTEMI patient, calculate his CRUSADE bleeding score: male, hematocrit 38%, CrCl 28 mL/min, heart rate 78 bpm, systolic BP 105 mmHg, no CHF signs, prior vascular disease yes, no diabetes. What quintile and in-hospital bleeding risk does that give him?”
Automated cardiology triage dashboard
“For our NSTE-ACS triage dashboard, compute the CRUSADE score for a female patient: hematocrit 29%, CrCl 18 mL/min, heart rate 112 bpm, systolic BP 88 mmHg, CHF signs present, prior vascular disease yes, diabetes yes — give me the integer score and published bleeding percentage.”
Clinical trial bleeding risk documentation
“I need to document the CRUSADE bleeding risk for a male study patient at enrollment: hematocrit 42%, CrCl 95 mL/min, heart rate 68 bpm, systolic BP 145 mmHg, no CHF, no prior vascular disease, diabetes yes. What's the score, quintile, and expected in-hospital major bleeding rate?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/crusadeWhen to prefer
Use this endpoint when you need a validated, published CRUSADE bleeding risk score for an NSTE-ACS or NSTEMI patient and already have Cockcroft–Gault CrCl computed externally. Prefer this over general risk calculators when the clinical context is specifically non-ST-elevation ACS and you need the Subherwal 2009 quintile-band bleeding percentages for documentation or shared decision-making.
Side effects
- Missing required query parameters returns a 400 error
- CrCl value out of range (1–300 mL/min) rejected
- Heart rate out of range (30–220 bpm) rejected
- Hematocrit out of range (10–70%) rejected
- Systolic BP out of range (50–250 mmHg) rejected
- Invalid sex value (must be 'female' or 'male') rejected
- Payment not attached or insufficient results in 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/crusade",
"count": 2,
"items": [
{
"sex": "male",
"score": 1,
"formula": "crusade",
"citation": {
"id": "subherwal-2009",
"doi": "10.1161/CIRCULATIONAHA.108.828541",
"pmid": "19332461",
"title": "Baseline risk of major bleeding in non–ST-segment-elevation myocardial infarction: the CRUSADE Bleeding Score",
"source": "Circulation. 2009;119(14):1873-1882",
"authors": "Subherwal S, Bach RG, Chen AY, et al."
},
"diabetes": false,
"max_score": 96,
"components": [
{
"value": 42,
"factor": "hematocrit_percent",
"points": 0,
"present": false
},
{
"value": 130,
"factor": "crcl_ml_min",
"points": 0,
"present": false
},
{
"value": 65,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": "male",
"factor": "sex",
"points": 0,
"present": false
},
{
"factor": "signs_of_chf",
"points": 0,
"present": false
},
{
"factor": "prior_vascular_disease",
"points": 0,
"present": false
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": 140,
"factor": "systolic_mm_hg",
"points": 1,
"present": true
}
],
"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.",
"crcl_ml_min": 130,
"crusade_band": "very_low",
"signs_of_chf": false,
"heart_rate_bpm": 65,
"systolic_mm_hg": 140,
"formula_expression": "CRUSADE = hematocrit(<31:9, 31-<34:7, 34-<37:3, 37-<40:2, >=40:0) + crcl_ml_min(<=15:39, >15-30:35, >30-60:28, >60-90:17, >90-120:7, >120:0) + heart_rate(<=70:0, 71-80:1, 81-90:3, 91-100:6, 101-110:8, 111-120:10, >=121:11) + female(8) + signs_of_chf(7) + prior_vascular_disease(6) + diabetes(6) + systolic(<=90:10, 91-100:8, 101-120:5, 121-180:1, 181-200:3, >=201:5); Subherwal 2009 Table 4; quintiles <=20 3.1%, 21-30 5.5%, 31-40 8.6%, 41-50 11.9%, >50 19.5%; max 96",
"hematocrit_percent": 42,
"prior_vascular_disease": false,
"in_hospital_major_bleeding_percent": 3.1
},
{
"sex": "male",
"score": 1,
"formula": "crusade",
"citation": {
"id": "subherwal-2009",
"doi": "10.1161/CIRCULATIONAHA.108.828541",
"pmid": "19332461",
"title": "Baseline risk of major bleeding in non–ST-segment-elevation myocardial infarction: the CRUSADE Bleeding Score",
"source": "Circulation. 2009;119(14):1873-1882",
"authors": "Subherwal S, Bach RG, Chen AY, et al."
},
"diabetes": false,
"max_score": 96,
"components": [
{
"value": 42,
"factor": "hematocrit_percent",
"points": 0,
"present": false
},
{
"value": 130,
"factor": "crcl_ml_min",
"points": 0,
"present": false
},
{
"value": 65,
"factor": "heart_rate_bpm",
"points": 0,
"present": false
},
{
"value": "male",
"factor": "sex",
"points": 0,
"present": false
},
{
"factor": "signs_of_chf",
"points": 0,
"present": false
},
{
"factor": "prior_vascular_disease",
"points": 0,
"present": false
},
{
"factor": "diabetes",
"points": 0,
"present": false
},
{
"value": 140,
"factor": "systolic_mm_hg",
"points": 1,
"present": true
}
],
"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.",
"crcl_ml_min": 130,
"crusade_band": "very_low",
"signs_of_chf": false,
"heart_rate_bpm": 65,
"systolic_mm_hg": 140,
"formula_expression": "CRUSADE = hematocrit(<31:9, 31-<34:7, 34-<37:3, 37-<40:2, >=40:0) + crcl_ml_min(<=15:39, >15-30:35, >30-60:28, >60-90:17, >90-120:7, >120:0) + heart_rate(<=70:0, 71-80:1, 81-90:3, 91-100:6, 101-110:8, 111-120:10, >=121:11) + female(8) + signs_of_chf(7) + prior_vascular_disease(6) + diabetes(6) + systolic(<=90:10, 91-100:8, 101-120:5, 121-180:1, 181-200:3, >=201:5); Subherwal 2009 Table 4; quintiles <=20 3.1%, 21-30 5.5%, 31-40 8.6%, 41-50 11.9%, >50 19.5%; max 96",
"hematocrit_percent": 42,
"prior_vascular_disease": false,
"in_hospital_major_bleeding_percent": 3.1
}
]
}
}Tags
x402
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