An 85-year-old man with a history of hypertension (being treated with an ACE inhibitor and calcium channel blocker) and coronary artery disease with previous bypass surgery presents to the emergency department with significant lightheadedness. When it began a day earlier, he initially thought it was because he didn't take all of his medications that day. However, he still felt lightheaded the next day and therefore came to the emergency department. Vital signs were stable but his pulse was slow. A 12-lead ECG was obtained.
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Cite this: ECG Challenge: Lightheadedness in the ED - Medscape - Sep 22, 2020.