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Pediatric NEXUS II Head CT Decision Rule (Gupta 2018)
x402
Pediatric NEXUS II Head CT Decision Rule (Gupta 2018) 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).
Applies the Pediatric NEXUS II (Gupta 2018) clinical decision rule to determine if a child aged 0–17 is low-risk for clinically significant head injury based on seven binary criteria.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pediatric NEXUS II (Gupta 2018). Low-risk iff all seven flags are false: skull fracture, scalp hematoma, neurologic deficit, altered alertness, abnormal behavior, persistent vomiting, and coagulopathy. Age 0-17 is required but is not a criterion; adult NEXUS Head CT age >= 65 is dropped. Not a diagnosis, not a CT order, not Mower 2017 adult NEXUS Head CT, not PECARN, CATCH, or CHALICE, and not Hoffman 2000 NEXUS C-spine. magent does not examine the patient.
Output
Returns a low_risk boolean (true if all seven criteria flags are false, meaning the patient may not require CT; false if any criterion is present), along with the individual flag values passed in and a summary of the rule applied. Does not include a CT recommendation or diagnosis.
Example use cases
Triaging child after playground fall
“I have a 6-year-old who fell off playground equipment and hit their head. There's no skull fracture, no scalp hematoma, no neuro deficit, alertness and behavior are normal, no vomiting, and no coagulopathy — run the Pediatric NEXUS II rule and tell me if they're low risk.”
Automated EMR triage integration
“For a 14-year-old head trauma patient: skull fracture is false, scalp hematoma is false, neurologic deficit is false, altered alertness is true, abnormal behavior is false, persistent vomiting is false, coagulopathy is false — apply the Gupta 2018 NEXUS II pediatric decision rule and return the low-risk determination.”
Second-check before CT ordering workflow
“Before we order a CT, can you run the Pediatric NEXUS II criteria for this 3-year-old? The clinician has noted: no skull fracture, a scalp hematoma is present, no neurologic deficit, alertness is normal, behavior is normal, no vomiting, no coagulopathy.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/pediatric_nexus_iiWhen to prefer
Use this endpoint when you need to apply the specific Gupta 2018 Pediatric NEXUS II clinical decision rule for children aged 0–17 presenting with head trauma. Choose this over PECARN, CATCH, or CHALICE when your workflow specifically requires NEXUS II pediatric criteria. Do not use for adults, for C-spine clearance (Hoffman 2000 NEXUS), or when a diagnosis or CT order is required — this is purely a rule-based risk classification tool.
Side effects
- Age outside 0–17 range returns a rejection error (age 18 is explicitly rejected)
- Missing any of the seven required boolean query parameters returns a validation error
- Misclassification risk if caller-assigned clinical flags are inaccurate — the API does not examine the patient
- Rule does not apply to adults; adult NEXUS Head CT (age ≥65 criterion) is not supported here
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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