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DISCUSSION: The 12-lead EKG EMS initially obtained for this patient showed severe ischemia, with profound "infero-lateral" ST depression and reciprocal ST elevation in lead aVR. Author continued : STE in aVR is often due to left main coronaryartery obstruction (OR 4.72), and is associated with in-hospital cardiovascular mortality (OR 5.58).
The patient was started on heparin for possible NSTEMI vs demand ischemia. increasing stenosis, ischemia, volume changes, increased blood pressure, atrial fibrillation, etc.) The EKGs from the ED presentation were felt by cardiology to represent "subendocardial ischemia." Smith : these ECGs do NOT show subendocardial ischemia.
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