PMC4767133_01
Patient Electrocardiograms (ECG). (A) Presenting ECG demonstrating sinus rhythm and no ischemic changes. (B) ECG during episode of prolonged chest pain showing loss of precordial forces and anterolateral ST depressions. (C) ECG after resolution of symptoms showing loss of anterior forces.
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This event was associated with loss of anterior forces on the electrocardiogram (Fig. 1A-C) and elevated biomarkers (peak troponin I of of 9.4 ng/mL).