Clinical study of radiofrequency current catheter ablation in the treatment of supraventricular tachycardia

Objective To evaluate the efficacy of radiofrequency current catheter ablation for patients with supraventricular tachycardia.Method 350 patients with paroxysmal supraventricular tachycardia were examined by electrophysiology to diagnosis the type of tachycardia.Patients with left-side accessory atrioventricular pathways were ablated by aortic retrograde pathway or puncture atrial septal pathway.Patients with right-side accessory atrioventricular pathways were ablated by right femoral vein.Patients with atrioventricular nodal reentrant tachycardia were ablated by inferior ablation of the slow pathway.Results 350 patients with paroxysmal supraventricular tachycardia,201 were atrioventricular nodal reentrant tachycardia,and 149 were atrioventricular reentrant tachycardia.The Operation instant success rate was 99.4%(348 /350),and its relapse rate was 2.9%(10 /348).The total average operation time was(96.5 ± 23.3) min,among which the average operation time of was atrioventricular nodal reentrant tachycardia(AVNRT)(87.2 ± 21.9) min,and the average operation time of atrioventricular reentrant tachycardia(AVRT) was(98.4 ± 26.6) min.6 patients had mild operation complications,but no severe complication such as valve injury,pericardial tamponade,or death occurred.Conclusion Radiofrequency current catheter ablation for patients with supraventricular tachycardia is safe and effective.Surface ECG during tachycardia and careful electrophysiology examination are important for making diagnosis,improving therapeutic effect,and decreasing complication.