Current application trend in the catheter ablation of arrhythmias in Hubei province from 2013 to 2015

Abstract

Objective To analyze the trend of catheter ablation of arrhythmias in Hubei province from 2013 to 2015. Methods The data of catheter ablation of arrhythmias in Hubei province from 2013 to 2015 was collected to analyze the application trend of arrhythmia catheter ablation, including paroxysmal supraventricular tachycardia(PSVT), atrial fibrillation(AF), ventricular premature beat(VPB)and ventricular tachycardia(VT). Results In 2013, 2014 and 2015, the increasing rate of the catheter ablation in Hubei province was 13.1%, 6.0% and 6.7% respectively.Except for the decrease of PSVT, the volume of other arrhythmias increased year by year(P<0.01). For the ablation of PSVT, the proportion of conventional mapping declined while the Carto and Ensite mapping applications increased year by year(P<0.01). Success rate of ablation maintained around 96% without statistical difference(P=0.16). AF ablation account for majority of radiofrequency ablation and the use of cryoablation rapidly increased to 17.4% in 2015.Carto mapping remained the main procedure, but the use of Ensite mapping increased every year with a significant difference(P<0.01). Immediate success rates of electrical isolation of circumferential pulmonary vein were over 98% without intergroup difference(P=0.34). The application of Carto and Ensite mapping was gradually increased in the ablation of VPB(P<0.01), and the success rates of catheter ablation were 92.6%, 94.9%, and 95.9% respectively(P=0.03)in 2013, 2014, and 2015.The use of conventional mapping for VT decreased while the application of Carto increased(P<0.05). Success rate in each year was 87.4%, 85.8%, and 89.2% respectively(P=0.71). Conclusions In the past 3 years, the development of catheter ablation of arrhythmias entered a stable period in Hubei province, and the quality of catheter ablation was gradually improved.However, the use of ablation on the treatment of VT and prevention of SCD still face to a challenge. Key words: Arrhythmias; Catheter ablation; Hubei province