A 76-year-old man with a history of hypertension, diastolic dysfunction on echocardiogram, and hyperlipidemia presents to his primary care physician with complaints of occasional fatigue and lightheadedness. He denies syncope or other cardiac symptoms. While in the office he notes lightheadedness, and a 12-lead ECG is obtained (Figure 1).
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Cite this: ECG Challenge: Feeling Tired and Lightheaded - Medscape - Mar 16, 2020.