Characterization of Electrograms Associated With Termination of Chronic Atrial Fibrillation by Catheter Ablation
Yoshihide Takahashi, MD*,*,
Mark D. O’Neill, MB, BCh, DPhil*,
Mélèze Hocini, MD*,
Rémi Dubois, PhD ,
Seiichiro Matsuo, MD*,
Sébastien Knecht, MD*,
Srijoy Mahapatra, MD*,
Kang-Teng Lim, MD*,
Pierre Jaïs, MD*,
Anders Jonsson, MD*,
Frédéric Sacher, MD*,
Prashanthan Sanders, MBBS, PhD*,
Thomas Rostock, MD*,
Pierre Bordachar, MD*,
Jacques Clémenty, MD*,
George J. Klein, MD* and
Michel Haïssaguerre, MD*
* Service de Rythmologie, Hôpital Cardiologique du Haut-Lévêque, Université Victor Segalen Bordeaux 2, Bordeaux, France
Laboratoire d’Electronique, ESPCI, Paris, France.
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Figure 1 Evaluation of Continuous Activity Percentage
Continuous activities with duration of 450 ms, 100 ms, and 900 ms are interrupted by an isoelectric line of >50 ms. Duration of continuous activity in this observation window is 90%.
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Figure 4 Activation Gradient
(A) A temporal gradient of at least 70 ms between the distal and proximal bipoles on the map electrode is observed. (B) Possible mechanism underlying activation gradient between the distal and proximal bipoles. A mapping catheter lies across a small re-entry circuit, which plays a driving role.
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