Application of ventricular mapping electrode catheter in radiofrequency catheter ablation for idiopathic premature ventricular beats originating in the right outflow tract

Objective To study the role of ventricularm aping electrode catheter in the radiofrequency catheter ablation for idiopathic ventricular amhythmia.Methods Ninety-nine patients with idiopathic ventricular tachycardia and frequent ventricular premature contractions originating in the right outflow tract were enrolled.The patients were randomly assigned to two groups: pace mapping group(n=50) and pace map-ping plus ventricularm aping electrode catheter mapping group(n=49).Ablation was performed in all patients.The success rate,power,temperature,discharge time,frenquency and impedance were compared between the two groups.Results The immediate success rate of RFCA was 96%(48/50) and 93.8%(46/49),with no significant difference between the two groups while in the group using ventricular mapping electrocle catheter,the mapping time,discharging time,fluoroscopy time and operating time were significantly decreased(P0.05).Conclusion Setting the ventricular mapping electrocle catheter in the radio frequency catheter ablation of idiopathic ventricular arrhythmia can facilitate operations by consuming less power,requiring a low temperature,saving time and improving efficiency.