Retrospective Analysis Of Radiofrequency Ablation For Arrhythmia

Objective:To analyze and discuss the effect of radiofrequency ablation on patients with arrhythmia treated in our hospital.We aim to be familiar with the age and gender of patients and other clinical characteristics in detail.The types and cases of arrhythmmias treated by radiofrequency ablation were also reviewed.Retrospective analysis of factors influencing recurrence of tachyarrhythmia after radiofrequency ablation in order to make some progress in the treatment of arrhythmia.Methods:The study selected patients treated in our department from July 2017 to July 2019.Those patients all underwent the treatment of radiofrequency ablation.The data such as gender and age,the specific cases and types of arrhythmia were analyzed.The success rate,complication rate and recurrence rate were also counted.Then analyze the related factors of recurrence after radiofrequency ablation.Results:From July 2017 to July 2019,570 cases of tachyarrhythmia were treated by radiofrequency ablation in our hospital.There were 286 males and 284 females.The age of those patients ranged from 7 to 93 with an average age of 55.3±14.8 years.The total success rate of radiofrequency ablation was 98.25%(560/570),and the recurrence rate of radiofrequency ablation was 7.86%(44/560).The total incidence of complications of arteriovenous fistula,conduction block and neck hematoma was 0.53%(3/570).In the left pathway patients,the recurrence group and non recurrence group have significant differences in different ablation energy and cumulative ablation time(P < 0.05).In the right pathway patients there was no significant difference in ablation energy and cumulative ablation time between recurrent group and non recurrent group.In patients with atrioventricular nodal reentrant tachycardia,the ablation energy and ablation cumulative time of recurrence group and non recurrence group had significant difference(P < 0.05).In the recurrence group and non recurrence group of atrial fibrillation,there are statistically significant differences in CRP,D-dimer LDH and so on between the recurrence group and the non recurrence group(P<0.05),logistic regression analysis showed that elevated D-dimer might be a risk factor for recurrence of atrial fibrillation.Conclusion:In AVNRT and left accessory pathway ablation,ablation energy ≥35W and cumulative ablation time ≥90s may reduce the recurrence rate after ablation;In the ablation of premature ventricular contractions,the target with QRS complex ≥ 35 ms ahead of the body surface may be helpful to reduce the recurrence rate after ablation;Elevated D-dimer may be a risk factor for recurrence of atrial fibrillation after radiofrequency ablation.