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Ultra-high Density Atrio-Ventricular Dual Chamber Mapping, as a Next Generation Tool for the Ablation of Accessory Pathways
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  • Hitoshi Mori,
  • Daisuke Kawano,
  • Naokata Sumitomo,
  • Shota Muraji,
  • Taisuke Nabeshima,
  • Kenta Tsutsui,
  • Yoshifumi Ikeda,
  • Shiro Iwanaga,
  • Shintaro Nakano,
  • Toshihiro Muramatsu,
  • Toshiki Kobayashi,
  • Ritsushi Kato,
  • Kazuo Matsumoto
Hitoshi Mori
Saitama Medical University International Medical Center
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Daisuke Kawano
Saitama Medical University International Medical Center
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Naokata Sumitomo
Saitama Ika Daigaku Kokusai Iryo Center
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Shota Muraji
Saitama Medical University International Medical Center
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Taisuke Nabeshima
Saitama Medical University International Medical Center
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Kenta Tsutsui
Saitama Medical University International Medical Center
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Yoshifumi Ikeda
Saitama Medical University International Medical Center
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Shiro Iwanaga
Saitama Medical University International Medical Center
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Shintaro Nakano
Saitama Medical University International Medical Center
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Toshihiro Muramatsu
Saitama Medical University International Medical Center
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Toshiki Kobayashi
Saitama Medical University International Medical Center
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Ritsushi Kato
Saitama Medical University International Medical Center
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Kazuo Matsumoto
Saitama Medical University International Medical Center
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Abstract

Introduction Detail 3D mapping have been useful for effective radiofrequency catheter ablation. Rhythmia system can create the atrio-ventricular dual chamber mapping, which reveals the atrial and ventricular potentials all at once in the same map. The aim of this study was to investigate the utility of Rhythmia system for catheter ablation of accessory pathways (AP). Methods From July 2015 to August 2020, 111 patients underwent ablation of APs. The dual chamber mappings were created in 50 patients [median age 15 (10-54), 32 male(64.0%)], while 61 patients underwent the radiofrequency (RF) ablations with conventional single chamber 3D mappings. The background characteristics and procedure details were compared between the dual chamber mapping group and conventional single chamber mapping group. Results The number of RF application [1 (1-3) vs 3 (1-6), p=0.0023], RF time [9.2 (2.0-95.7) vs 95.6 (4.1-248.7), p=0.0023], RF energy [248.4 (58.7-3328.2) vs 2867.6 (134.2-7728.4), p=0.0115] were significantly lower in dual chamber group. Fluoroscopy time [19.9 (14.2-26.1) vs 26.5 (17.7-43.4), p=0.0025], and fluoroscopy dose [52.5 (31.3-146.0) vs 119.0 (43.7-213.5), p=0.0249] were also significantly lower than in single chamber mapping group. Conclusion The dual chamber mappings were useful for effective ablation with reducing the radiation exposure.

Peer review status:ACCEPTED

25 Jan 2021Submitted to Journal of Cardiovascular Electrophysiology
01 Feb 2021Submission Checks Completed
01 Feb 2021Assigned to Editor
01 Feb 2021Reviewer(s) Assigned
10 Feb 2021Review(s) Completed, Editorial Evaluation Pending
11 Feb 2021Editorial Decision: Revise Minor
26 Feb 20211st Revision Received
27 Feb 2021Assigned to Editor
27 Feb 2021Submission Checks Completed
27 Feb 2021Reviewer(s) Assigned
08 Mar 2021Review(s) Completed, Editorial Evaluation Pending
08 Mar 2021Editorial Decision: Revise Minor
25 Mar 20212nd Revision Received
26 Mar 2021Submission Checks Completed
26 Mar 2021Assigned to Editor
26 Mar 2021Reviewer(s) Assigned
30 Mar 2021Review(s) Completed, Editorial Evaluation Pending
01 Apr 2021Editorial Decision: Accept