Key result
Radiofrequency ablation at the superoanterior right atrium adjacent to the tricuspid annulus successfully terminated atypical fast-slow AVNRT and eliminated its inducibility.
Case Report (n=1)
Radiofrequency ablation at the superoanterior right atrium can successfully treat atypical fast-slow AVNRT utilizing a slow pathway variant extending to this region.
Alerts to superoanterior RA sites in atypical AVNRT; leaves open variant-specific ablation strategies.
We report a case of atypical fast-slow atrioventricular nodal reentrant tachycardia (AVNRT) using a slow pathway variant extending to the superoanterior right atrium. The AVNRT diagnosis was confirmed by using standard electrophysiological criteria that exclude a diagnosis of atrial tachycardia and atrioventricular reentrant tachycardia. The earliest atrial activation during tachycardia was found in the superoanterior right atrium adjacent to the tricuspid annulus, where the first delivery of radiofrequency energy terminated and eliminated the inducibility of the tachycardia.
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Kaneko et al. (2019) conducted a case report in Atypical fast-slow atrioventricular nodal reentrant tachycardia (n=1). Radiofrequency catheter ablation was evaluated on Termination of tachycardia and elimination of inducibility. Radiofrequency ablation at the superoanterior right atrium adjacent to the tricuspid annulus successfully terminated atypical fast-slow AVNRT and eliminated its inducibility.
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