Abstract

AZOCAR, Damián et al. Radiofrequency Ablation of Frequent Ventricular Arrhythmia Guided by Multielectrode Array Catheter. Rev. argent. cardiol. [online]. 2014, vol.82, n.5, pp.416-420. ISSN 1850-3748.

Introduction and objective: The non-contact mapping system with expandable balloon catheter allows ventricular arrhythmia mapping with few ectopic beats. The aim of this study was to analyze ablation results with this system. Methods: Patients with ventricular arrhythmia were prospectively and consecutively studied with the non-contact mapping system. Results: The study included 10 patients, 8 women, with mean age of 45 years (range: 27 to 65). Arrhythmia origin was right ventricular outflow tract in 8 patients, right ventricular inflow tract in 1 and left ventricular outflow tract in 1. Acute success was obtained in 9/10 patients (90%). Mean follow-up was 6 months (range 1 to 16); 8 patients continued with obliterated arrhythmia without medication and 1 patient required pharmacologic treatment. The only complication was femoral arteriovenous fistula. Conclusions: The non-contact mapping system allows a highly efficient and safe approach of right ventricular arrhythmias. Future studies with more patients and comparing with other methods may confirm these results.

Keywords : Tachycardia; Ventricular; Ventricular Premature Complexes; Catheter Ablation.

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