Initial experience and follow up on the PolarX cryoablation system compared to the established Arctic Front cryoablation system in PVI ablations

Autor: Elena Pesch, S Kochhaeuser, S R Popal, L Riesinger, Johannes Siebermair, Tienush Rassaf, J E Bohnen, Reza Wakili
Rok vydání: 2021
Předmět:
Zdroj: European Heart Journal. 42
ISSN: 1522-9645
0195-668X
DOI: 10.1093/eurheartj/ehab724.0382
Popis: Introduction Pulmonary vein isolation (PVI) with cryoablation was shown to be comparable to radiofrequency ablation (RF) in terms of safety and outcome for patients with atrial fibrillation (AF), so that both techniques are recommended equally by the current guidelines. A new cryoablation system PolarX® was introduced in 2020. We analysed the first patients, who underwent ablation with the new system with respect to procedural and safety outcome and evaluated the freedom from arrhythmia occurrence in the first 6 months compared to patients treated with the established Arctic Front Advance® cryoablation system. Methods We included the consecutive 44 patients who underwent cryoablation with the new PolarX® cryoablation system (28mm) and 24 patients who underwent cryoablation with the established Arctic Front Advance® cryoablation system (28mm) for paroxysmal AF. We retrospectively analysed baseline characteristics, procedural- and safety data. In 5 patients of each group an additional high-density 3D-mapping was performed, evaluating the scar-area after cryoablation in both groups (figure 1A+B). After 6 months the freedom of AF (by 7d-Holter-ECG) was evaluated in both groups. Results Baseline, procedural characteristics and results are listed in table 1. Mean total procedure duration (“door-to-door-time”) was significantly shorter in the PolarX group compared to the Arctic-Front group (136±34min vs. 163±43min; p Conclusion Based on these initial results, cryoablation with the PolarX cryoballoon seems to be comparably effective and safe, with a significantly shorter procedure time and significantly lower achieved temperatures. Nevertheless, future controlled trials with a longer follow-up period will be necessary to evaluate long-term effectiveness. Funding Acknowledgement Type of funding sources: None.
Databáze: OpenAIRE
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