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cardiology emergency-medicine

Lead aVR Sign for Left Main / Proximal LAD Occlusion

ST elevation in lead aVR (especially ≥1 mm) with diffuse ST depression in ≥6 leads is a high-risk ECG pattern suggesting left main coronary artery or proximal LAD occlusion. Associated with high mortality.

References

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Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.