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Course: A Paradoxical ST-Segment Elevation Distribution Rendering a Challenging Prediction of the Culprit Vessel in Acute Myocardial Infarction

CME Credits: 1.00

Released: 2023-01-23

A patient in their 50s, a current cigarette smoker with a history of hypertension but no known cardiac disease, presented with sudden-onset chest pain via emergency medical services (EMS). The patient was hypertensive with a systolic blood pressure of 220 mm Hg by EMS. On arrival at the emergency department, the patient was in acute distress due to ongoing chest pain. The patient was afebrile, heart rate was 72 bpm, respiration rate was 16 breaths per minute, and blood pressure was 153/97 mm Hg. The cardiopulmonary examination was overall unremarkable. The electrocardiograms (ECGs) obtained by EMS and in the emergency department showed ST-segment elevation (STE), up to 5 mm in amplitude, in leads V1 through V3 and horizontal/down sloping ST depression (STD) in leads V4 through V6. The diagnosis was STE myocardial infarction (STEMI). The patient was subsequently brought to the cardiac catheterization laboratory for emergency cardiac catheterization and coronary angiography as a code STEMI.


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