ECG Challenge: What Triggered This AF Patient's Shortness of Breath?

Philip J. Podrid, MD


April 22, 2021

A 76-year-old man with a history of atrial fibrillation (treated with a beta-blocker and diltiazem for rate control) presents to the emergency department with lightheadedness and shortness of breath. His blood pressure is normal, but his heart rate is slow. A 12-lead ECG is obtained.

Figure 1. Courtesy of Dr Podrid.


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