Intracardiac 3D navigation as a tool to improve the efficiency of ablation of idiopathic ventricular arrhythmias

Abstract

Aim. Еvaluate the effect of 3D navigation on the effectiveness of ablation idiopathic ventricular arrhythmias. Materials and methods. The paper presents a retrospective postoperative analysis of 57 patients with idiopathic ventricular arrhythmias. Patients were divided into two groups. Group I included 30 (52.6 %) patients who used a 3D navigation system during mapping. Group II – 27 (47.4 %) patients in whom mapping was performed using classical methods. The effectiveness criteria were: frequency of acute suppression of arrhythmia, number of radiofrequency applications for suppression, and time of intervention. Results. Intraoperatively, complete suppression of the arrhythmia was successfully achieved in all cases in both groups. In group I average number of applications in patients with ventricular extrasystole was 5.5 (4.0; 8.0), while in group II – 6.5 (3,5; 9.0), without statistically significant difference (p = 0.414). A similar situation was observed with ventricular tachycardia. Іn group I number of applications was 3.2 (3.0; 4.3), and in group II – 5.0 (2.3; 11.0), which also had no statistically significant difference (р = 0.537). The duration of intervention for ventricular extrasystole in group I was 100.6 ± 26.6 min, while in group II – 136.4 ± 42.2 min, that has statistically significant difference (p = 0.007). During ablation of ventricular tachycardia in group I average duration was 89.3 ± 20.4 min, while in group II – 135.4 ± 55.5 min. The duration of intervention for ventricular tachycardia with the use of 3D navigation had a significantly shorter time compared to classical methods (p = 0.024). Conclusions. Based on the obtained data, we concluded that the use of 3D navigation significantly reduced the intervention time, regardless of the localization and type of arrhythmia. At the same time, no significant difference was found in the frequency of acute arrhythmia suppression and the number of applications to achieve the effect between the studied groups.