ECG of the Month: A 67-Year-Old Man Presents for Evaluation of Left Foot Ulcer and Intermittent Light-Headedness

A 67-year-old man with a history of hypertension, peripheral vascular disease, status post femoral artery bypass procedure, tobacco use, and moderately disabling rheumatoid arthritis presents for evaluation of a left foot ulcer. He has had intermittent light-headedness. The following electrocardiogram (ECG) is obtained (Figure 1).

Figure 1

Figure 1

The ECG shows which of the following?

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