Radiofrequency Ablation of Frequent Ventricular Arrhythmia Guided by Multielectrode Array Catheter

pp. 393-397

Abstract

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.