Posterior wall isolation using the cryoballoon in conjunction with pulmonary vein ablation is superior to pulmonary vein isolation alone in patients with persistent atrial fibrillation: A multicenter experience

Arash Aryana, James H. Baker, Martin A. Espinosa Ginic, Deep K. Pujara, Mark R. Bowers, P. Gearoid O'Neill, Kenneth A. Ellenbogen, Luigi Di Biase, André d'Avila, Andrea Natale

Research output: Contribution to journalArticle

42 Scopus citations

Abstract

Background: Pulmonary vein isolation (PVI) in conjunction with isolation of the posterior left atrial wall (PVI+PWI) is associated with improved clinical outcomes in certain patients with atrial fibrillation (AF). Objective: The purpose of this multicenter study was to evaluate the acute and long-term outcomes of PVI+PWI vs PVI alone performed using cryoballoon ablation in patients with persistent AF (persAF). Methods: We examined the procedural safety and efficacy and short- and long-term outcomes in 390 consecutive patients with persAF who underwent a first-time cryoballoon ablation procedure using PVI+PWI (n = 222 [56.9%]) vs PVI alone (n = 168 [43.1%]). Results: Acute isolation was achieved in 99.7% of all pulmonary veins (PVI+PWI = 99.8% vs PVI alone = 99.3%; P =.23) using 6.3 ± 1.4 applications and 17 ± 2 minutes of cryoablation. PWI was achieved using 13.7 ± 3.2 applications and 34 ± 10 minutes of cryoablation. Adjunct radiofrequency ablation was required in 1.8% of patients to complete PVI (4 ± 2 minutes) and in 32.4% to complete PWI (5 ± 2 minutes). PVI+PWI yielded significantly greater posterior wall (77.2% ± 6.4% vs 40.6% ± 4.9%; P <.001) and total left atrial (53.3% ± 4.2% vs 36.3% ± 3.8%; P <.001) isolation. In addition, PVI+PWI was associated with greater AF termination (19.8% vs 8.9%; P =.003) and conversion to atrial flutters (12.2% vs 5.4%; P =.02). Adverse events were similar in both groups, whereas recurrence of AF and all atrial arrhythmias was lower with PVI+PWI at 12 months of follow-up. Moreover, in a Cox regression analysis, PVI+PWI emerged as a significant predictor of freedom from recurrent atrial arrhythmias (hazard ratio: 2.04; 95% confidence interval: 1.15–3.61; P =.015). Conclusion: PVI+PWI can be achieved safely and effectively using the cryoballoon. This approach appears superior to PVI alone in patients with persAF.

Original languageEnglish (US)
Pages (from-to)1121-1129
Number of pages9
JournalHeart Rhythm
Volume15
Issue number8
DOIs
StatePublished - Aug 1 2018

Keywords

  • Catheter ablation
  • Cryoablation
  • Cryoballoon
  • Persistent atrial fibrillation
  • Posterior wall isolation
  • Pulmonary vein isolation

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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