Key Points: Pattern, not a STEMI equivalent. ST elevation in aVR (≥1 mm), often with ST elevation in V1 and diffuse ST depression (≥1 mm in ≥6 leads), represents high-risk…
Key Points: Most missed occlusion MI. Isolated posterior occlusion MI is frequently missed because the standard 12-lead ECG often lacks ST elevation. Instead, posterior injury appears as reciprocal anterior ST…