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ORIGINAL RESEARCH article

Front. Cardiovasc. Med.
Sec. Cardiac Rhythmology
Volume 11 - 2024 | doi: 10.3389/fcvm.2024.1453273
This article is part of the Research Topic Personalized Care in Cardiac Arrhythmias: the Role of Digital Platforms in Cardiac Arrhythmia Management View all 3 articles

Charge density mapping demonstrates superiority in catheter ablation of post-surgical atrial tachycardias Short title: Charge density mapping in post-surgical AT ablation

Provisionally accepted
Rita B. Gagyi Rita B. Gagyi 1*Ioan A. Minciuna Ioan A. Minciuna 2Wim Bories Wim Bories 3Tamas Szili-Torok Tamas Szili-Torok 1
  • 1 Department of Internal Medicine, University of Szeged, Szeged, Hungary
  • 2 5th Department, Department of Internal Medicine, Faculty of Medicine, Luliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
  • 3 Other, Zaventem, Belgium

The final, formatted version of the article will be published soon.

    Introduction: Atrial tachycardia (AT) frequently occurs after cardiac surgery or surgical ablation procedures. The novel charge density-based mapping system (CDM) provides global chamber mapping and can detect crucial pathways of conduction; therefore, it has potential added value in catheter ablation (CA) of post-surgical ATs. We aimed to test the hypothesis that CDM-guided CA procedures are safe, feasible, and may improve outcome compared to conventional sequential 3D mapping (CARTO)-based CA.Consecutive patients undergoing CA for post-surgical AT guided by CDM or CARTO were enrolled. Procedural safety and efficiency were analyzed. Acute success, one-year outcome was assessed. A total of 35 patients (mean age 60.8±10.6 years, 42.9% female), underwent CA of AT using CDM (n=20) and CARTO (n=15). A total of 61 ATs were mapped (35 in CDM and 26 in CARTO group). Four patients had focal ATs, 22 macro re-entrant, and 8 patients had ATs with both mechanisms. No differences were found in procedural complication (CDM 3 vs. CARTO 1 patient, p=0.61). There were no differences in procedure duration (185.9 vs. 147.9 minutes, p=0.09), fluoroscopy dose (165.0 vs. 155.0 mGy, p=0.31), RF application number (28.0 vs. 18.0, p=0.17) or duration (1251.5 vs. 1060.0 s, p=0.54). Acute success was 95.0% in CDM and 73.3% in CARTO group (p=0.14). Cumulative AT recurrence rates were lower in CDM group compared to CARTO group (10.0% vs. 46.7%, p=0.02).The CDM system is feasible. Our data suggest that patients treated with CDMguided CA developed fewer AT recurrences as compared to CARTO-guided procedures.

    Keywords: atrial tachycardia, Cardiac mapping, global chamber mapping, Catheter Ablation, Mapping

    Received: 22 Jun 2024; Accepted: 13 Sep 2024.

    Copyright: © 2024 Gagyi, Minciuna, Bories and Szili-Torok. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Rita B. Gagyi, Department of Internal Medicine, University of Szeged, Szeged, 6720, Hungary

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.