Challenge

Urgent message: Identifying the most likely cause of a 73-year-old male’s sensation that his heart is “missing beats” — while being mindful of the most potentially serious sources—will guide decisions on the right course of action. The ECG you order will offer invaluable clues as to the appropriate steps to take. By John F. O’Brien, MD The patient is a 73-year-old male who presents with a primary complaint that it occasionally feels as if his heart is “missing …

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