Electrophysiological features and radiofrequency catheter ablation of accessory pathways associated with atrioventricular discordance.

APs in patients with AV discordance are usually associated with the anatomical TV annulus. CA of an AP in AV discordance is highly effective and recommended to reduce the risk of SVT. The coexistence of twin AVNs and other SVTs should be considered during CA of an AP in AV discordance.