Clin Res Cardiol (2021). 10.1007/s00392-021-01933-9 |
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The novel wide-band dielectric imaging system to guide radiofrequency-based catheter ablation: Feasibility and First Insights | ||
F. Moser1, L. Rottner1, J. Moser1, R. Schleberger1, M. Lemoine1, P. Münkler1, L. Dinshaw1, P. Kirchhof1, B. Reissmann1, F. Ouyang1, A. Metzner1, A. Rillig1 | ||
1Klinik für Kardiologie, Universitäres Herz- und Gefäßzentrum Hamburg GmbH, Hamburg; | ||
Background: Pulmonary vein isolation (PVI) is an established rhythm control therapy in patients with atrial fibrillation (AF). Recently, a novel wide-band dielectric imaging system (KODEX-EPD) was introduced into clinical practice. First clinical experience has shown promising results in cryoballoon-based PVI, however the feasibility in radiofrequency (RF)-based procedures as a stand-alone mapping system has not been reported yet. Aim: The aim of this study was to evaluate feasibility and acute efficacy of RF-based PVI using solely the novel wide-band dielectric imaging system without concomitant use of other mapping systems. Methods: Consecutive patients with AF who underwent PVI in combination with the KODEX-EPD system were analyzed. 3-dimensional maps were created with a circular mapping catheter, isolation of the ipsilateral pulmonary veins (PVs) was performed via point-by-point RF ablation. Results: A total of 10 patients (6 male (60%), 63 [52, 69], 5 persistent AF (50%)) underwent conventional RF-based PVI with KODEX EPD guidance. Total procedure time was 125 [112, 134] minutes, fluoroscopy time and dosage were 13 [11, 14] minutes and 511 [439, 581] cGycm, respectively. KODEX-EPD map of the left atrium was obtained with a mean of 1755 [1287, 2048] acquired mapping points. All 40 PVs (100%) were successfully isolated. In one patient, where cardioversion was not feasible after PVI only, a left atrial anterior line and posterior box ablation was successfully performed. No peri- or postprocedural complications occurred. Conclusion: The novel KODEX-EPD imaging system is feasible to guide RF-based isolation of the PVs. No periprocedural complications occurred in this study population. Further studies are needed to compare theKODEX-EPD system with established 3D-mapping systems for RF-based ablation.
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https://dgk.org/kongress_programme/ht2021/P910.htm |