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- Title
Mapping and ablation of ventricular arrhythmias with magnetic navigation: comparison between 4- and 8-mm catheter tips.
- Authors
Di Biase L; Burkhardt JD; Lakkireddy D; Pillarisetti J; Baryun EN; Biria M; Horton R; Sanchez J; Gallinghouse GJ; Bailey S; Beheiry S; Hongo R; Hao S; Tomassoni G; Natale A; Di Biase, Luigi; Burkhardt, J David; Lakkireddy, Dhanunjaya; Pillarisetti, Jayasree; Baryun, Esam Nuri
- Abstract
<bold>Introduction: </bold>Remote magnetic navigation (RMN) has been reported as an effective and safe tool to overcome the need for advanced operator skill in the treatment of complex arrhythmias. We report a series of patients undergoing radiofrequency catheter ablation of ventricular arrhythmias (VAs) using RMN with either a 4-mm catheter tip or an 8-mm catheter tip at four different centers.<bold>Methods: </bold>Sixty-five patients with clinical and symptomatic history of Vas were included. Two different magnetic catheters were used to deliver radiofrequency applications remotely. When ablation with the RMN catheters failed, a manual irrigated catheter was used to eliminate the VAs. Post-ablation pacing maneuvers were utilized to verify the inducibility of Vas.<bold>Results: </bold>Twenty-eight patients (43%) had ischemic cardiomyopathy [coronary artery disease (CAD)], 16 patients (25%) had non-ischemic cardiomyopathy [idiopathic dilated cardiomyopathy (IDC)], and 21 patients (32%) had structurally normal hearts (SNH) or right ventricle outflow tract tachycardia (RVOT). In patients with structural heart disease (CAD, IDC), success was achieved in 22% with the 4-mm catheter tip and in 59% with the 8-mm catheter tip (p = 0.014). In patients with SNH/RVOT, success was achieved in 85% with the 4-mm catheter tip and in 87% with the 8-mm catheter tip (p = 1.00).<bold>Conclusions: </bold>Our findings showed that, with RMN, there is an increased success related to the catheter tip utilized. However, in patients with right ventricular outflow origin, the standard 4-mm tip provided adequate lesions for successful ablation in most patients.
- Publication
Journal of Interventional Cardiac Electrophysiology, 2009, Vol 26, Issue 2, p133
- ISSN
1383-875X
- Publication type
journal article
- DOI
10.1007/s10840-009-9416-5