A 64-year-old man with a history of a dilated cardiomyopathy presents to the emergency department with worsening shortness of breath. A chest radiograph shows changes consistent with congestive heart failure. He is treated with intravenous furosemide (Lasix) and oxygen. His pulse is noted to be rapid, and a 12-lead ECG is obtained.
Figure 1. Courtesy of Philip J. Podrid, MD
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Cite this: ECG Challenge: Heart Racing and Probable Heart Failure - Medscape - Jul 18, 2022.