Efficacy and Safety of High-Power Short-Range Pulse Ablation Electrical Isolation for Superior Vena Cava
Objective To investigate the efficacy and safety of high-power short-range pulse ablation electrical isolation for superior vena cava(SVC).Methods A retrospective analysis was conducted on 108 patients with atrial fibrillation who underwent catheter radiofrequency ablation and SVC electrical isolation surgery in the Cardiovascular Department of the First Affiliated Hospital of Zhengzhou University and the Cardiovascular Department of Xuchang Central Hospital from January 2023 to October 2023.The preferred ablation strategy for the SVC was segmental ablation,starting with ablation of the septal side of the SVC,followed by ablation of the anterior and posterior walls,and finally ablation of the free wall side.The continuous discharge strategy was adopted for the ablation interval side,and high-power short-term pulse discharge was used for the ablation of the front wall,back wall and free wall.The effectiveness indicators were completion of SVC electrical isolation,while the safety indicators were cardiac tamponade,sinus node injury,and phrenic nerve injury.Results There were 107 cases(99.1％)of atrial fibrillation patients completed SVC electrical isolation.Among the patients who successfully completed SVC electrical isolation,all patients required septal ablation,89 patients(83.2％)underwent anterior wall ablation,63 patients(58.9％)underwent posterior wall ablation,and 101 patients(94.4％)underwent free wall ablation.When using high-power short-range pulse ablation,4(3,5)discharges per point were discharged to reach the ablation endpoint.The time from modeling the SVC to completing SVC electrical isolation was 7(6,8)minutes.After completing the SVC electrical isolation,the potential did not recover after 15 minutes of observation.All patients did not experience cardiac tamponade,sinus node injury or phrenic nerve injury.Conclusion The method of high-power short-range pulse ablation can efficiently and safely complete the electrical isolation of the SVC.
万方数据
维普
