Key Points: ST depression is a pattern, not a diagnosis. It can represent ischemia, reciprocal change, baseline repolarization abnormalities, or noncardiac physiology. First considerations: regional (territorial) ST depression vs diffuse…
Key Points: Posterior OMI can hide on the standard 12-lead. Acute posterior coronary occlusion may produce no diagnostic ST elevation in the conventional leads. Instead, posterior ST elevation is seen…
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…