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Modified Sgarbossa Criteria Calculator (Smith 2012)
x402
Modified Sgarbossa Criteria Calculator (Smith 2012) 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).
Computes the unweighted Smith 2012 modified Sgarbossa criteria to identify STEMI equivalent in left bundle branch block (LBBB) based on three caller-assigned ECG flags.
Price / call$0.005
Success—
StatusUnknown
How this service works
Smith 2012 unweighted modified Sgarbossa for STEMI equivalent in LBBB. Positive if ANY of three caller-assigned flags is true: concordant ST elevation ≥1 mm in a lead with positive QRS, concordant ST depression ≥1 mm in V1–V3, or ≥1 mm discordant STE with ST/S ratio ≤ −0.25 (STE ≥25% of the preceding S-wave). Not the original Sgarbossa 1996 5/3/2 points score. Not a 5 mm discordant rule. magent does not measure the ECG. Not a diagnosis.
Output
Returns a boolean or structured result indicating whether the modified Sgarbossa criteria (Smith 2012) are met — positive if ANY of the three caller-supplied flags is true (concordant STE ≥1 mm, concordant ST depression in V1–V3, or discordant STE with ST/S ≤ −0.25), negative if all three are false. Not a diagnosis.
Example use cases
ED triage LBBB STEMI screening
“I'm evaluating an ED patient with LBBB. There's concordant ST elevation of 1 mm in one lead, no concordant ST depression in V1–V3, and no excessive discordant STE meeting the 25% S-wave ratio. Run the Smith 2012 modified Sgarbossa and tell me if it's positive.”
Cardiology cath lab activation decision support
“Before calling a cath lab activation for this LBBB patient, check the modified Sgarbossa criteria: concordant STE ≥1 mm is false, concordant ST depression in V1–V3 is true, and the discordant STE ST/S ratio criterion is false. What does Smith 2012 say?”
Clinical case teaching review
“For a cardiology teaching case, apply the unweighted modified Sgarbossa rule where all three criteria — concordant ST elevation, concordant ST depression in V1–V3, and excessive discordant STE with ST/S ≤ −0.25 — are all false. Is the result positive or negative?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/modified_sgarbossaWhen to prefer
Choose this endpoint when you need the unweighted Smith 2012 modified Sgarbossa criteria specifically — which uses a ST/S ratio ≤ −0.25 for discordant leads rather than the original 5 mm threshold, and treats any positive flag as a positive result rather than accumulating weighted points. Do not use this if you need the original Sgarbossa 1996 5/3/2 scoring system or if you need automated ECG measurement — the caller must supply the three boolean findings directly.
Side effects
- Missing required boolean flags will result in a validation error
- Passing non-boolean values for flag parameters may cause a bad request error
- Conflating this with the original Sgarbossa 1996 5/3/2 weighted point score may produce unexpected interpretation
- Conflating this with the 5 mm discordant rule (original Sgarbossa) rather than the 25% S-wave ratio (Smith 2012) represents a caller input error
- Network or payment (x402) failures may prevent the call from completing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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