Question

A 25-year-old athlete has episodes of sudden palpitations with a regular, narrow-complex tachycardia at 180 bpm. Valsalva manoeuvres terminate these episodes. What is the most likely underlying mechanism?

Accepted Answer

AV nodal reentrant tachycardia (AVNRT)

Answer

Atrial fibrillation

Answer

Ventricular tachycardia

Answer

Wolff-Parkinson-White syndrome with antidromic AVRT

Answer

Sinus tachycardia

Practice question

A 25-year-old athlete has episodes of sudden palpitations with a regular, narrow-complex tachycardia at 180 bpm. Valsalva manoeuvres terminate these episodes. What is the most likely underlying mechanism?