Important factors in left atrial posterior wall isolation using 28‐mm cryoballoon ablation for persistent atrial fibrillation—Block line or isolation area?

2019 ◽  
Vol 31 (1) ◽  
pp. 119-127 ◽  
Author(s):  
Tadafumi Nanbu ◽  
Akihiko Yotsukura ◽  
George Suzuki ◽  
Yuki Ishidoya ◽  
Fumihiko Sano ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Persistent Atrial Fibrillation ◽  
Posterior Wall ◽  
Cryoballoon Ablation ◽  
Left Atrial Posterior

scholarly journals Feasibility and safety of left atrial posterior wall isolation with a new Cryoballoon technology in patients with persistent atrial fibrillation

2021 ◽  
Author(s):  
Antonio Bisignani ◽  
Luigi Pannone ◽  
Vincenzo Miraglia ◽  
Juan Sieira ◽  
Saverio Iacopino ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Persistent Atrial Fibrillation ◽  
Posterior Wall ◽  
The Arctic ◽  
Cryoballoon Ablation ◽  
The Novel ◽  
Front Advance ◽  
Arctic Front ◽  
Left Atrial Posterior

Introduction: Left atrial posterior wall isolation (LAPWI) is often performed in addition to pulmonary vein isolation (PVI) to improve outcome in patients with persistent atrial fibrillation (AF). In this setting, LAPWI + PVI using cryoballoon ablation had comparable results with radiofrequency ablation (RFA). The aim of the study is to evaluate the feasibility and safety of a new cryoballoon ablation system in PVI + LAPWI isolation, comparing it with the historical platform. Methods: The study was a prospective, non-randomized, single center study. Forty consecutive patients, undergoing PVI + LAPWI with the novel POLARx™, were compared to 40 consecutive patients who underwent the same procedure with the established Arctic Front Advance PRO™. Results: Acute isolation was achieved in all PVs in both groups and 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 the two groups, except for lower temperatures during cryoapplications in the POLARx group, for both PVI and LAPWI. The complication rate was low and similar between groups. Conclusion: LAPWI+PVI with the novel POLARx™ Cryoballoon is feasible and safe; the results are comparable with the Arctic Front Advance PRO™ system.

scholarly journals The Electrical Isolation of the Left Atrial Posterior Wall in Catheter Ablation of Persistent Atrial Fibrillation

2019 ◽  
Vol 5 (11) ◽  
pp. 1253-1261 ◽  
Author(s):  
Jung Myung Lee ◽  
Jaemin Shim ◽  
Junbeom Park ◽  
Hee Tae Yu ◽  
Tae-Hoon Kim ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Left Atrial ◽  
Persistent Atrial Fibrillation ◽  
Posterior Wall ◽  
Electrical Isolation ◽  
Left Atrial Posterior

Impact of Left Atrial Posterior Wall Isolation Technique on the Outcome of Ablation in Persistent Atrial Fibrillation

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Ahmed I Elbatran ◽  
Mervat Abou- Elmaaty Nabih ◽  
Magdi M Saba ◽  
Rania Samir ◽  
Mazen Tawfik ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Persistent Atrial Fibrillation ◽  
Posterior Wall ◽  
Atrial Tachyarrhythmia ◽  
Isolation Technique ◽  
Free Survival ◽  
Procedural Complications ◽  
One Year ◽  
Left Atrial Posterior

Abstract Background Left atrial posterior wall (LAPW) isolation is an adjunct to pulmonary vein isolation (PVI) for persistent atrial fibrillation (AF). Objective To compare the effect of LAPW box isolation with LAPW point-by-point ablation and PVI in persistent AF on 12-month arrhythmia-free survival and procedure complications. Methods 77 consecutive patients who underwent LAPW box isolation, 24 patients who underwent LAPW point-by-point ablation and 101 patients who underwent PVI for persistent AF were compared. All patients had undergone no prior ablation for AF and were followed up for one year. Results Mean time to atrial tachyarrhythmia recurrence was similar with LAPW box isolation (9.8 months, 95% CI = 9-10.7) and LAPW point-by-point ablation (10 months, 95% CI = 8.6-11.3), both were longer than PVI (8.2 months, 95% CI = 7.4-9.1, log-rank p = 0.003). There was no difference in peri-procedural complications (LAPW box isolation: 5/77, LAPW point-by-point ablation: 1/24, PVI: 6/101, p = 0.91). At 12 months, no difference in atrial tachyarrhythmia recurrence was observed between box isolation (23/77, 30%) and point-bypoint ablation (11/24, 46%, p = 0.15), but significantly higher recurrence occurred with PVI alone (58/101, 57%, p < 0.001). Procedure time was similar with both approaches, with longer fluoroscopy with point-by-point ablation (median: 38 min, IQR: 29-47.75) vs box isolation (median: 28 min, IQR: 7.5-39.5, p = 0.2). Conclusion In persistent AF, there was no difference between LAPW box isolation and point-by-point ablation in terms of mean arrhythmia-free survival, 12-month recurrence or procedure complications. Arrhythmia-free survival with either technique was longer than PVI alone, with no increase in complications.

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