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A 68-year-old female presents to urgent care with dyspnea for 2 days. She has a medical history of heart failure. An ECG is obtained.

View the ECG captured above and consider what your diagnosis and next steps would be. Resolution of the case is described on the next page.

68-Year-Old With Dyspnea
Figure 1. Initial ECG
Case presented by Benjamin Cooper, MD, McGovern Medical School, The University of Texas Health Science Center at Houston, Department of Emergency Medicine.
68-Year-Old With Dyspnea