USMLE Step 2 Quiz
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CARDIOVASCULAR
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A 67-year-old man with a history of coronary artery disease and a prior myocardial infarction presents with palpitations and dizziness. His blood pressure is 110/70 mm Hg, and his pulse is 150/min. An ECG shows a regular, wide-complex tachycardia with a QRS duration of 160 ms. He is awake and alert.
What is the most likely diagnosis?
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