Key result
Radiofrequency ablation successfully treats coexisting WPW and AVNRT in a single session.
Case Report (n=1)
No
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This case highlights the rare coexistence of WPW syndrome and AVNRT, demonstrating the clinical importance of investigating and ablating a second inducible tachycardia during the same electrophysiology session.
Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common type of reentrant paroxysmal supraventricular tachycardia that occurs in the presence of dual AV nodal physiology. Wolff-Parkinson-White (WPW) syndrome is another type of supraventricular tachycardia characterized by short PR intervals, delta waves and wide QRS complexes on the surface electrocardiogram (ECG), reflecting atrioventricular pre-excitation. Uncommonly, AV nodal reentry and accessory pathways can coexist. In this case report, we present a patient who had frequent episodes of palpitation and syncope and recently presented to the emergency department (ED) with the complaint of dizziness. We performed successful radiofrequency (RF) catheter ablation of mitral annulus posterolateral accessory pathway and AVNRT which was the cause of the second tachycardia induced during the same session.
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Elitok et al. (2018) conducted a case report in Wolff-Parkinson-White syndrome and atrioventricular nodal reentrant tachycardia (n=1). Radiofrequency (RF) catheter ablation was evaluated on Successful ablation of accessory pathway and slow pathway (elimination of delta wave and non-inducibility of tachycardia). Radiofrequency catheter ablation successfully treated a patient with coexisting Wolff-Parkinson-White syndrome and atrioventricular nodal reentrant tachycardia in a single session.
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