A 12-year-old boy with Wolff-Parkinson-White syndrome presents with palpitations for the past hour. His blood pressure is 110/62 mm Hg and pulse is 166 bpm. The ECG reveals a narrow-complex tachycardia. Vagal maneuvers are ineffective. Which of the following is the next most appropriate management?
a) Adenosine
b) Cardioversion
c) Procainamide
d) Radiofrequency ablation

A- Adenosine

Explanation: Wolff-Parkinson-White syndrome is regarded in comparison with prevalent heart condition that makes the human heart to beat rapidly in an unusual way for an interval of time. However, Adenosine is a drug or medicine that is introduced into the body with a syringe after vagal maneuvers we're ineffective to reduce the heart rate of the patient.

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