Predictors of recurrence in patients without non‐inducibility of ventricular tachycardia at the end of ablation

Abstract

Abstract Background Ventricular tachycardia (VT) non‐inducibility at the end of ablation is associated with a less likely VT recurrence. However, it is not clear whether we should use VT non‐inducibility as a routine end point of VT ablation. The aim of this study was to evaluate VT recurrence in patients in whom VT non‐inducibility was not achieved at the end of the radiofrequency (RF) ablation and the factors attributing to the VT recurrence. Methods We analyzed that 62 patients in whom VT non‐inducibility was not achieved at the end of the RF ablation were studied. Results Over 2 years, 22 (35%) of the cases had VT recurrences. A multivariate analysis showed that an LVEF ≥35% (HR: 0.19; 95% CI: 0.06–0.49; p < .01) and elimination of the clinical VT as an acute ablation efficacy (HR: 0.23; 95% CI: 0.04–0.81; p = .02) were independent predictors of fewer VT recurrences. RF ablation was associated with a 91.1% reduction in VT episodes. Conclusion Even if VT non‐inducibility was not achieved, patients with an LVEF ≥35% or in whom the clinical VT could be eliminated might be prevented from having VT recurrences. The validity of the VT non‐inducibility of any VT should be evaluated considering each patient's background and the results of the procedure.

Keywords

• catheter ablation
• ventricular tachycardia
• ventricular tachycardia non‐inducibility