Journal
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY
Volume 45, Issue 5, Pages 605-611Publisher
WILEY
DOI: 10.1111/pace.14495
Keywords
cryoballoon; left atrial posterior wall ablation; persistent atrial fibrillation; POLARx; pulmonary vein isolation
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This study evaluated the feasibility and safety of a new cryoballoon ablation system in achieving pulmonary vein isolation (PVI) and left atrial posterior wall isolation (LAPWI). The results showed that the novel system was comparable to the established system in terms of efficacy and safety.
Background Left atrial posterior wall isolation (LAPWI) is often performed in addition to pulmonary vein isolation (PVI) in the setting of persistent atrial fibrillation (AF) ablation. The aim of this study was to evaluate the feasibility and safety of a new cryoballoon ablation system in achieving PVI + LAPWI isolation. Methods The study was a prospective, non-randomized, single center study. Forty consecutive patients, undergoing PVI + LAPWI with the novel POLARx (TM), were compared to 40 consecutive patients who underwent the same procedure with the established Arctic Front Advance PRO (TM). Results Acute isolation was achieved in all PVs in both groups and left posterior wall isolation (LAPWI) was achieved in 38 patients (95%) in the POLARx group and in 36 patients (90%) in Arctic Front group. Procedural outcomes were similar between both groups, except for lower temperatures during cryoenergy in the POLARx group, for both pulmonary vein isolation (PVI) and LAPWI. Conclusion LAPWI + PVI with the novel POLARx (TM) Cryoballoon is feasible and safe; the results are comparable with the Arctic Front Advance PRO (TM) system.
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