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Driver 2017 Subtle LAD Occlusion vs Early Repolarization Calculator (4-Variable Formula)
x402
Driver 2017 Subtle LAD Occlusion vs Early Repolarization Calculator (4-Variable Formula) 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 Driver 2017 4-variable formula score to distinguish subtle LAD occlusion from early repolarization (normal-variant STE) in leads V2-V4, flagging likely occlusion when score ≥18.2
Price / call$0.005
Success—
StatusUnknown
How this service works
Driver 2017 4-variable formula for normal-variant STE in V2-V4 (early repolarization) versus subtle LAD occlusion: formula_value = 0.052*QTc_ms - 0.151*QRS_V2_mm - 0.268*R_V4_mm + 1.062*STE60_V3_mm, 3 decimals. lad_occlusion_suggested is true iff the value is ≥18.2 (derivation highest-accuracy cutpoint). Intended only when ≥1 mm STE in V2-V4 without obvious occlusion features. magent does not read the ECG. Not a STEMI diagnosis, cath-lab order, or 3-variable formula. Not a medical device.
Output
Returns a numeric formula value rounded to 3 decimal places (computed as 0.052×QTc_ms − 0.151×QRS_V2_mm − 0.268×R_V4_mm + 1.062×STE60_V3_mm), and a boolean flag lad_occlusion_suggested that is true when the value is ≥18.2 (the derivation highest-accuracy cutpoint), and false otherwise. This is a clinical decision-support calculation only — not a diagnosis, STEMI declaration, or cath-lab order.
Example use cases
ED physician ruling out subtle anterior STEMI
“I have a patient with 1.5 mm STE in V2-V4 and no obvious occlusion features — run the Driver 2017 4-variable formula with QTc 410 ms, QRS amplitude in V2 14 mm, R-wave in V4 3 mm, and STE60 in V3 2.0 mm so I can see if LAD occlusion is suggested.”
Clinical audit pipeline scoring ECG batch
“For this ECG record: QTc 460 ms, QRS amplitude in V2 22 mm, R-wave in V4 7 mm, ST elevation 60ms past the J-point in V3 is 1.8 mm — compute the Driver 2017 subtle STEMI score and tell me whether it crosses the 18.2 cutpoint.”
Medical education tool demonstrating formula sensitivity
“Show me the Driver 2017 formula result when I change only the STE60 in V3 from 1.0 to 3.5 mm, keeping QTc at 390 ms, QRS in V2 at 16 mm, and R-wave in V4 at 4 mm — does the classification flip to LAD occlusion suggested?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/subtle_stemiWhen to prefer
Use this endpoint when you have explicit numeric ECG measurements (QTc, QRS amplitude in V2, R-wave in V4, STE60 in V3) and need to apply the validated Driver 2017 4-variable formula to distinguish subtle anterior LAD occlusion from benign early repolarization. Prefer this over general ECG interpretation services when the clinical question is specifically this differential, the STE is ≥1 mm in V2-V4, and no obvious occlusion pattern (e.g. tombstoning) is present. Do not use for the 3-variable formula, for obvious STEMIs, or as a substitute for physician ECG reading.
Side effects
- Missing required query parameter (qtc_ms, qrs_v2_mm, r_v4_mm, or ste60_v3_mm) returns a 400-level error
- Out-of-range values (e.g. QTc outside 200-800 ms or STE60 >10 mm) may return a validation error or undefined behavior
- Payment failure (x402) if USDC balance is insufficient or payment header is missing
- Misapplication: formula not valid for patients with obvious occlusion features, LBBB, LVH, or <1 mm STE in V2-V4
- Network timeout on the api.magentlab.com host
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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