au-acem MCQ (SBA): Paroxysmal supraventricular tachycardia

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EasyCardiologyParoxysmal supraventricular tachycardiaau-acemau-amc

A 28-year-old woman presents with recurrent episodes of palpitations and has an ECG showing narrow-complex tachycardia at 180 beats/min consistent with AV nodal re-entrant tachycardia. She is haemodynamically stable. What is the FIRST-line acute treatment?

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