An 8–month–old female child presented to emergency with a heart rate of 220/minute and features of congestive heart failure. Her heart rate comes down to normal after administering intravenous adenosine. What is the most likely diagnosis ?
Adenosine is the DOS for PSVT.
Atrial fibrillation
Atrial flutter
Paroxysmal supraventricular tachycardia
Ventricular tachycardia