Success predictors of radiofrequency ablation of ventricular premature beats

Abstract

Objective – to determine the optimal parameters of stimulation and activation mapping during radiofrequency ablation (RFA) of ventricular premature beats (VPB). Materials and methods. We have analyzed 134 consecutive cases of patients with RFA of monomorphic VPB. The mean age of patients was (37.2 ± 12.1) years. 87 (64.9 %) of patients were female. All patients with VPB were treated by the RFA according to standard procedure protocol. As part of this technique following application parameters of successful application area of interest were analyzed: outrunning of local endogram, compared with surface ECG and percent of matching of stimulated QRS-complex with VPB using function «match». The criterion for the efficiency of procedure was assumed number of VPB 30 ms during activation mapping and «match» > 95 % during stimulation mapping (p < 0.001). RFA is safe procedure. The risk of non-fatal complications was 1.5 % (p < 0.05).

Keywords

• radiofrequency ablation, ventricular premature beats, activation mapping, stimulation mapping.