The patient is a 75-year-old man with a history of hypertension (treated with an angiotensin-converting enzyme inhibitor and a calcium channel blocker) and diabetes (treated with oral medications). He presents to the emergency department with a 3-day history of lightheadedness and a sensation of presyncope. His physical examination is normal, but his pulse rate is very slow. A 12-lead ECG is obtained.
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Cite this: ECG Challenge: 'I Feel Like I'm Going to Pass Out' - Medscape - Mar 01, 2019.