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 Â± 12Â 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 Â± 194Â s in group 1 vs. 542 Â± 104Â s in group 2 (p < 0.001); right PVs: 410 Â± 270Â s in group 1 vs. 550 Â± 156Â s in group 2 (p = 0.05)]. Fluoroscopy time (23 Â± 9Â min vs. 28 Â± 5Â min; p = 0.05), procedural time (83 Â± 23Â min vs. 160 Â± 42Â min; p < 0.001), and radiation dose (109 Â± 20Â Gy/cm2 vs. 127 Â± 29Â 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.
Usefulness of intracardiac echocardiography during pulmonary vein isolation with the novel multipolar irrigated ablation catheter (nMARQ(TM) / A. Dello Russo, G. Fassini, M. Casella, A. Di Monaco, S. Riva, V. Romano, M. Moltrasio, F. Tundo, G. De Martino, B. Majocchi, V. Marino, E. Russo, F. Pizzamiglio, G. Del Giorno, G. Pelargonio, L. Di Biase, A. Natale, C. Tondo. - In: JOURNAL OF INTERVENTIONAL CARDIAC ELECTROPHYSIOLOGY. - ISSN 1383-875X. - 44:1(2015), pp. 39-45.
|Titolo:||Usefulness of intracardiac echocardiography during pulmonary vein isolation with the novel multipolar irrigated ablation catheter (nMARQ(TM)|
NATALE, ANDREA PRISCO LORENZO (Penultimo)
TONDO, CLAUDIO (Ultimo)
|Parole Chiave:||Atrial fibrillation ablation; Intracardiac echocardiography; nMARQTM ablation catheter; Atrial Fibrillation; Catheter Ablation; Echocardiography; Electrocardiography; Female; Fluoroscopy; Humans; Male; Middle Aged; Pulmonary Veins; Treatment Outcome; Ultrasonography, Interventional; Cardiology and Cardiovascular Medicine; Physiology (medical); Medicine (all)|
|Settore Scientifico Disciplinare:||Settore MED/11 - Malattie dell'Apparato Cardiovascolare|
|Data di pubblicazione:||2015|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/s10840-015-0026-0|
|Appare nelle tipologie:||01 - Articolo su periodico|
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