Catheter ablation of premature ventricular contraction arising from right ventricular outflow tract with noncontact mapping and electrocardiogram useful value
AIM: To assess the clinical value of noncontact mapping( NCM) system in guiding radiofrequency ablation of premature ventricular contraction( PVC) arising from right ventricular outflow tract and the electrocardiogram characteristics. METHODS: A total of 58 PVC patients received radiofrequency catheter ablation( RFCA) and the origin of PVC was inferred from 12-lead surface electrocardiogram before RFCA. Conventional mapping( CM) was performed in 26 patients and guidance of noncontact mapping in 32 patients....