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Europace Advance Access originally published online on December 22, 2008
Europace 2009 11(4):445-449; doi:10.1093/europace/eun352
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Published on behalf of the European Society of Cardiology. All rights reserved. © The Author 2008. For permissions please email: journals.permissions@oxfordjournals.org

Ablation for Atrial Fibrillation

Early recovery of pulmonary vein conduction after cryoballoon ablation for paroxysmal atrial fibrillation: a prospective study

Gian Battista Chierchia1,*, Carlo de Asmundis1, Stephan-Andreas Müller-Burri1, Andrea Sarkozy1, Lucio Capulzini1, Gaetano Paparella1, Sergio Chierchia2, Markus Roos1 and Pedro Brugada1

1 Heart Rhythm Management Center, UZ Brussel-VUB, Laarbeeklaan 101, 1090 Brussels, Belgium; 2 Villa Azzurra Hospital, GVM, Rapallo (GE), Italy

Aims: To assess the incidence of early pulmonary vein (PV) reconnection, characterize the anatomic features of the reconducting veins, and analyse the time course of their recovery in a series of consecutive patients with paroxysmal atrial fibrillation (AF) undergoing ablation with the Arctic Front Cryoballoon.

Methods and results: We prospectively enrolled 26 patients (20 males; age 55.4 ± 4.1) for circumferential PV cryoballoon isolation for highly symptomatic paroxysmal AF. Following isolation of all veins, we analysed PV potentials in each vein after 30 and 60 min with a circular mapping catheter. After successful electrical isolation of all 104 PV’s, recurrence was observed only in three veins (2.8%) after 30 min. Two further cryoballoon applications in each of these veins lead to their isolation. These veins were still electrically disconnected at 60 min. No PV reconnection was observed in any of the other 101 veins (97.1%) at 30 and 60 min.

Conclusion: Cryoballoon ablation of the PV’s ostia is a very effective technique to achieve electrical isolation, with a very low rate of early reconnection.

* Corresponding author. Tel: +32 2 4763038, Fax: +32 2 4776840, Email: jeanbaptiste.chierchia{at}uzbrussel.be

Manuscript submitted 8 October 2008. Accepted after revision 24 November 2008.


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