1 MCQs in Medicine for NEET PG
A 35-year-old woman with no structural heart disease presents to the emergency department with sudden-onset palpitations and a heart rate of 180 bpm. A 12-lead ECG shows a regular narrow-complex tachycardia with a rate of 180 bpm. The rhythm is suspected to be AVNRT. The structure marked **D** in the diagram indicates the acute management approach. Which of the following is the MOST appropriate first-line intervention for a hemodynamically stable patient with AVNRT?
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