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| Formato: | Artículo Open Access |
| Publicado: |
Wiley
2026
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| Acceso en línea: | https://onlinelibrary.wiley.com/doi/10.1111/pace.70174 |
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- SLL‐Type CCTGA With Dual AV Conduction System: Anterior AV Node‐Origin Atrial Tachycardia From RVOT Xuesong Shi Mingyu Sun Zulu Wang Pacing and Clinical Electrophysiology ABSTRACT Background Congenitally corrected transposition of the great arteries (ccTGA) involves atrio‐ventricular/ventriculo‐arterial discordance, leading to AV node‐His bundle variations that complicate RVOT anterior AV node‐origin atrial tachycardia (AT). Case Summary A 16‐year‐old male with 3‐year paroxysmal palpitations (worsened 6 months) had narrow QRS tachycardia. Echocardiography/CTA confirmed SLL‐type ccTGA. Electrophysiologic study revealed dual AV conduction system (RVOT His potentials) and RVOT as the earliest activation site. Radiofrequency ablation succeeded, with no recurrence/AV block at 12‐month follow‐up. Conclusion In ccTGA, pulmonary artery/RVOT is adjacent to the anteroseptum (aortic sinuses distant); redefining localization/ablation strategies ensures safety and success. 10.1111/pace.70174 http://onlinelibrary.wiley.com/termsAndConditions#vor