ECG Basics & Fundamentals: electrical alternans is present in less than 1/3 of patients with proven cardiac tamponade

HPI

A 56-year-old woman with history of breast cancer presents to the ED with chest pain and dyspnea. She is found to be afebrile, tachypneic, and tachycardic with a normal blood pressure. The following ECG is obtained:

Presenting ECG — ECG Basics & Fundamentals: electrical alternans is present in less than 1/3 of patients with proven cardiac tamponade

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