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Ultra-high-density mapping and ablation strategy for multiple scar-related right atrial tachycardias in patients without previous cardiac surgery

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Abstract

Background

Catheter ablation of right atrial (RA) tachycardia in patients who have extensive spontaneous RA scarring is challenging due to the complex substrate and the potential for multiple inducible atrial tachycardias (ATs).

Methods

Eighteen patients with scar-related RA AT and no prior cardiac surgery were enrolled. A total of 52 different ATs (mean 3.2 ± 1.5 ATs per patient) were observed. We endeavored to complete activation maps for 45 ATs.

Results

By analyzing activation maps, we classified ATs into six categories. The discrepant location and extension of ESAs were associated with different AT mechanisms.

Conclusions

Multiple scar-related RA ATs were observed in patients without previous cardiac surgery. The detailed activation patterns of these ATs could be clearly demonstrated by using an ultra-high-density mapping system.

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Authors and Affiliations

  1. Department of Cardiology, Wuhan Asian Heart Hospital, Hubei Province, 753 Jing han Avenue, Wuhan City, 430022, NO, China

    Jinlin Zhang & Xi Su

  2. Department of Cardiology, The First Affiliated Hospital of Peking University, Beijing, China

    Kang Li & Yansheng Ding

  3. Boston Scientific China, Shanghai, China

    Anquan Zhao

Authors
  1. Jinlin Zhang
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  2. Kang Li
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  3. Anquan Zhao
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  4. Yansheng Ding
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  5. Xi Su
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Correspondence to Jinlin Zhang.

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Zhang, J., Li, K., Zhao, A. et al. Ultra-high-density mapping and ablation strategy for multiple scar-related right atrial tachycardias in patients without previous cardiac surgery. J Interv Card Electrophysiol 63, 669–678 (2022). https://doi.org/10.1007/s10840-021-01062-3

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  • DOI: https://doi.org/10.1007/s10840-021-01062-3

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