Clinical analysis on patients with tachycardia who underwent radiofrequecy catheter ablation

Objective To analyze the outcomes of patients with tachycardia who underwent radiofrequecy catheter ablation and provide guidelines for further clinical works.Methods Clinical outcomes of 418 subjects with tachycardia who had undergone radiofrequecy catheter ablation were retrospectively analyzed.130 cases of atrioventricular nodal reentrant tachycardia(AVNRT),275 cases of accessory pathways(230 left accessory pathways,45 right accessory pathways),10 cases of ventricular tachycardia(VT),3 cases of artrial tachycardia(AT) were included,normal methods were used to carry out electrophysiological test and radiofrequency catheter ablation.Results The overall success rate was(97.9%,)in which radiofrequency catheter ablation of supraventricular tachycardias mediated by dual artriovetricular nodes and left-sided accessory pathway had a higher success rate(above 98.0%).The recurrence rate was 2.9% after radiofrequency catheter ablation,three of them were AVNRT,eight of them were AVRT and one of them were AT.Complete atrioventricular block took place in three patients during procedure,and pacemakers were implants in two patient.One patient complicated with injured aorta valve and regurgitation.Two patient had vonous and pulmonary embolism.None patient died.Conclusion Radiofrequency catheter ablation can be performed effectively and safely in different population,especially in patients with AVRT and AVNRT.