{"uid":"cap_b0DcXd9XhqaROPH-cVX0f","slug":"modified-sgarbossa-criteria-calculator-smith-2012-cd4c0f73","name":"Modified Sgarbossa Criteria Calculator (Smith 2012)","description":"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.","url":"https://api.magentlab.com/api/calc/modified_sgarbossa","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["concordant_st_elevation_1mm","concordant_st_depression_v1_v3","excessive_discordant_ste_st_s_ge_0_25"],"properties":{"concordant_st_elevation_1mm":{"type":"boolean","description":"Concordant ST elevation ≥1 mm in a lead with a positive QRS as assigned by the caller (Smith 2012). true or false. magent does not measure the ECG."},"concordant_st_depression_v1_v3":{"type":"boolean","description":"Concordant ST depression ≥1 mm in V1, V2, or V3 as assigned by the caller (Smith 2012). true or false. magent does not measure the ECG."},"excessive_discordant_ste_st_s_ge_0_25":{"type":"boolean","description":"≥1 mm discordant ST elevation with ST/S ratio ≤ −0.25 (STE ≥25% of the preceding S-wave depth) as assigned by the caller (Smith 2012). true or false. magent does not measure the ECG. Not the original Sgarbossa 1996 5 mm discordant rule."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_nef7LU6pGWvxDt46vbKNh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"Using the Smith 2012 modified Sgarbossa criteria, evaluate this LBBB ECG: concordant ST elevation ≥1 mm is present, concordant ST depression in V1–V3 is absent, and excessive discordant STE with ST/S ratio ≤ −0.25 is absent — is this a STEMI equivalent?","exampleUseCases":[{"title":"ED triage LBBB STEMI screening","prompt":"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."},{"title":"Cardiology cath lab activation decision support","prompt":"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?"},{"title":"Clinical case teaching review","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:08:52.021Z","isFirstParty":false}