Supraventricular arrhythmias Quiz: Ace Your Exams
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A 34-year-old male presents to the emergency department with palpitations. He states he drank his morning coffee, went out for a jog, but he suddenly became lightheaded and noted a fluttering sensation in his chest. He had a similar episode in the past, which self-resolved without intervention. Past medical history is noncontributory, and he does not take any medications. Temperature is 37.0°C (98.6°F), pulse is 175/min, respirations are 14/min, and blood pressure is 124/72 mmHg. Physical exam is otherwise unremarkable, and initial electrocardiogram is demonstrated below:

Image reproduced from Wikimedia Commons
Based on this patient's clinical presentation, which of the following is the most likely diagnosis?

Image reproduced from Wikimedia Commons
Based on this patient's clinical presentation, which of the following is the most likely diagnosis?
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