Abstract 11777: Acute and Long-term Success After Idiopathic Ventricular Arrhythmia Ablation: Clinical Outcome of Manual and Robotic Catheter Ablation

Abstract

Introduction: The aim of this study was to compare the acute and long-term success of idiopathic ventricular arrhythmia ablation using manual catheter navigation (MAN) to the magnetic navigation system (MNS). Methods: Procedural data of 50 consecutive patients (20 MAN, 30 MNS) with idiopathic ventricular arrhythmia who underwent catheter ablation at our center were analyzed. Acute and cumulative success rates, procedure, fluoroscopy and ablation times and long-term follow-up data were recorded. Results: Patient age, gender and VT site were distributed equally. Acute success was achieved in 55% of the MAN group and 70% of the MNS group (P = 0,370), cumulative success in 55,0% versus 86,7% (P = 0,021). Procedure times were even (168,0 ± 68,3 vs 163,6 ± 64,7 minutes; P = 0,604). Median fluoroscopy time was significantly shorter in the MNS group (35 (15,0-46,1) vs 18 (9,9-28,0) minutes; P = 0,042). Overall, significantly more complications occurred in the MAN group (30,0% vs 6,7%; P = 0,047). There was no significant difference in major and minor complications (10% vs 0%; P = 0,155 and 20,0% vs 6,7%; P = 0,202, respectively). Median follow-up was 65.0 months (55.0 - 84.7 months) for the MAN group and 80.5 months (68.5 - 86.0 months) for the MNS group (P = 0,094). Long term significant symptom relief was equal in both groups (94,7% vs 100%; P = 0,404). Conclusion: MNS is a favorable technique for the ablation of IVA’s in the long-term due to higher cumulative success rates and a better procedural safety profile