Key result
Catheter ablation successfully eliminated antegrade and retrograde accessory pathway conduction despite a residual accessory pathway potential, with selective block confirmed by parahisian pacing.
Case Report (n=1)
No
This case demonstrates that residual accessory pathway potential after ablation may be acceptable if bidirectional conduction block is confirmed, and parahisian pacing can verify selective block at the ventricular end.
Residual AP potential may be acceptable after confirmed bidirectional block; leaves open standardization of parahisian pacing in anteroseptal ablation.
During catheter ablation for Wolff-Parkinson-White (WPW) syndrome, an accessory pathway potential (APP) is sometimes observed at the optimal ablation site. Herein, we describe a case in which an APP remained after right-sided anteroseptal accessory pathway (AP) ablation. Moreover, selective block of the ventricular end (AP-ventricle junction) of the AP was confirmed by parahisian pacing (PHP).
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Yakabe et al. (2021) conducted a case report in Wolff-Parkinson-White syndrome (n=1). Catheter ablation was evaluated. Catheter ablation successfully eliminated antegrade and retrograde accessory pathway conduction despite a residual accessory pathway potential, with selective block confirmed by parahisian pacing.
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