ECG of the Month: A 75-Year-Old Man Presents After Recent Therapy for Esophageal Cancer
A 75-year-old man with recent therapy for esophageal squamous cell carcinoma presents to the the emergency department with palpitations, weakness, and dysphagia. He is initially in atrial fibrillation, and has history of hypertension. The following ECG is obtained (Figure 1).
The ECG shows which of the following?