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Comparison between novel and standard high-density 3D electro-anatomical mapping systems for ablation of atrial tachycardia

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Abstract

Ultra-high-density mapping allows very accurate characterization of circuits/mechanisms in atrial tachycardia (AT). Whether these advantages will translate into a better procedural or long-term clinical outcome is unknown. Sixty consecutive AT ablation procedures using ultra-high-density mapping (Rhythmia™, group 1) were retrospectively compared to 60 consecutive procedures using standard high-density mapping (Carto/NavX™, group 2) (total 209 AT, 79% left AT). A higher number of maps were performed in group 1 (4.8 ± 2.5 vs 3.2 ± 1.7, p = 0.0001) with similar acquisition duration (12 ± 5 vs 13 ± 6 min per map, p = ns), although with a greater number of activation points (10,543 ± 5854 vs 689 ± 1827 per map, p < 0.0001). AT location remained undetermined in 5 AT in group 1 vs 10 (p = 0.1). Mechanism remained undetermined in 5 AT from group 1 vs 11 (p = 0.06). Acute complete success was achieved in 77%, in both groups. At 1-year follow-up, AT recurred in 37% in group 1 vs 50% in group 2 (p = 0.046). There are less long-term recurrences after AT ablation using ultra-high-density mapping system compared to standard high-density 3D mapping, possibly because of a better comprehensive approach of AT mechanisms.

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Authors and Affiliations

  1. Cardiology, University Hospital Rangueil, 31059, Toulouse Cedex 09, France

    Philippe Maury, Anne Rollin, Pierre Mondoly, Vanina Bongard, Michel Galinier, Didier Carrié & Lilian Marty

  2. Unité Inserm U 1048, Toulouse, France

    Philippe Maury

  3. University Hospital Caen, Caen, France

    Laure Champ-Rigot, Emilie Marminia & Paul Milliez

  4. Boston Scientific, Paris, France

    Stefano Capellino

Authors
  1. Philippe Maury
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  2. Laure Champ-Rigot
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  3. Anne Rollin
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  4. Pierre Mondoly
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  5. Vanina Bongard
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  6. Michel Galinier
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  7. Didier Carrié
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  10. Lilian Marty
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Correspondence to Philippe Maury.

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None except for SC who is employed by Boston Scientific.

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Philippe Maury and Laure Champ-Rigot share first authorship.

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Maury, P., Champ-Rigot, L., Rollin, A. et al. Comparison between novel and standard high-density 3D electro-anatomical mapping systems for ablation of atrial tachycardia. Heart Vessels 34, 801–808 (2019). https://doi.org/10.1007/s00380-018-1307-1

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  • DOI: https://doi.org/10.1007/s00380-018-1307-1

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