URGENT CATHETER ABLATION OF THE ELECTRICAL STORM IN PATIENTS WITH IMPLANTED CARDIOVERTER-DEFIBRILLATOR

Aim. The main goal of this study was to assess the early and delayed efficacies of urgent catheter ablation (CA) in patients with coronarogenic ventricular tachyarrhythmia (VTA) and electrical storms (ES).Material and methods. Procedures EFI and CA with the use of navigation charting system were done for 12 patients with ES. Mean time from implantation of ICD to ES was 3,4±3,2 y., quantity of adequate shocks of ICD per day in ES was 12,2±14,1. In most patients (67%) underwent CA, CHF of higher grade was diagnosed, LV EF was 32±12%.Results. Within primary approach of RFA the acute effect of clinical VTs was 58% (7 patients). During the first year of observation four patients developed VT returns (33%). During the whole observation time ES returns were not registered. Total mortality reached 25%Conclusion. Application of CA is able to suppress ES by 100% not only in acute period but in long-term too. Nevertheless, the additional CA application is necessary due to paroxysms of VT and interventions of ICD in 33% cases.