Usefulness of intracardiac echocardiography during pulmonary vein isolation with the novel multipolar irrigated ablation catheter (nMARQTM)

Antonio Dello Russo, Gaetano Fassini, Michela Casella, Antonio Di Monaco, Stefania Riva, Valentina Romano, Massimo Moltrasio, Fabrizio Tundo, Giuseppe De Martino, Benedetta Majocchi, Vittoria Marino, Eleonora Russo, Francesca Pizzamiglio, Giuseppe Del Giorno, Gemma Pelargonio, Luigi Di Biase, Andrea Natale, Claudio Tondo

Research output: Contribution to journalArticle

Abstract

Background: Previous studies reported the usefulness of an irrigated circular radiofrequency ablation catheter (nMARQTM, Biosense Webster) for pulmonary vein isolation (PVI). We evaluated the role of intracardiac echocardiography (ICE) to optimize the manipulation of nMARQTM catheter. Methods: Thirty-seven patients (pts), (mean age 55 ± 12 years; 28 males) were enrolled to perform PVI. All pts underwent PVI with the nMARQTM catheter. In 20 pts (group 1), we utilized ICE to guide nMARQTM catheter positioning at the PV ostia; in the other 17 pts (group 2), nMARQTM catheter was positioned at the PV ostia guided by fluoroscopy and TissueConnectTM technology. Results: Radiofrequency (RF) applications were significantly lower in group 1 compared to group 2 [left PVs: 6 (range 3 to 12) in group 1 and 12 (range 5 to 16) in group 2 (p <0.001); right PVs: 7 (range 4 to 14) in group 1 and 10 (range 5 to 16) in group 2 (p = 0.04)]; similarly regarding the time of RF delivery [left PVs: 318 ± 194 s in group 1 vs. 542 ± 104 s in group 2 (p <0.001); right PVs: 410 ± 270 s in group 1 vs. 550 ± 156 s in group 2 (p = 0.05)]. Fluoroscopy time (23 ± 9 min vs. 28 ± 5 min; p = 0.05), procedural time (83 ± 23 min vs. 160 ± 42 min; p <0.001), and radiation dose (109 ± 20 Gy/cm2 vs. 127 ± 29 Gy/cm2; p = 0.04) were significantly lower in group 1 compared to group 2. Conclusion: ICE might be a useful tool to guide nMARQTM catheter position in the left atrium during atrial fibrillation (AF) ablation procedures.

Original languageEnglish
Pages (from-to)39-45
Number of pages7
JournalJournal of Interventional Cardiac Electrophysiology
Volume44
Issue number1
DOIs
Publication statusPublished - Oct 14 2015

Keywords

  • Atrial fibrillation ablation
  • Intracardiac echocardiography
  • nMARQ<sup>TM</sup> ablation catheter

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

Fingerprint Dive into the research topics of 'Usefulness of intracardiac echocardiography during pulmonary vein isolation with the novel multipolar irrigated ablation catheter (nMARQ<sup>TM</sup>)'. Together they form a unique fingerprint.

  • Cite this