Effect of bipolar radiofrequency ablation during coronary artery bypass grafting on prognosis of ventricular arrhythmia associated with ventricular aneurysm after myocardial infarction
Wang Pengcheng
Qi Danni
Gao Mingxin
Yu Wenyuan
Tang Tian
Hu Hui
Yu Yang
Abstract：Objective To observe whether bipolar radiofrequency ablation during coronary artery bypass grafting can improve the prognosis of patients with ventricular aneurysm-related ventricular arrhythmia after myocardial infarction.Methods A total of 75 patients with ventricular aneurysm-related ventricular arrhythmia after myocardial infarction were enrolled in Beijing Anzhen Hospital,Capital Medical University between January 2015 and December 2017.Twenty-four hours ambulatory electrocardiogram suggested frequent ventricular premature contraction ＞ 100 times/h.All patients accepted bipolar radiofrequency ablation combined with coronary artery bypass grafting under general anesthesia with endotracheal intubation.Vital signs were monitored during operation.Twenty-four hours ambulatory electrocardiogram and echocardiogram were reexamined during in-hospital recovery after surgery.Results There was no death during operation.There was 1 case (1.3％) of secondary thoracotomy due to hemorrhage,2 cases(2.7％) of wound infection,1 case(1.3％) of cerebral infarction and 11 cases(14.7％)of supraventricular tachycardia after surgery.Average number of bypass vessels was (3.6 ± 0.8) and average stay was (15 ±4)d.Before discharge,echocardiography showed that there was no significant improvement of left ventricular ejection fraction compared to that before surgery [(48 ± 4) ％ vs (48 ± 6) ％] (t =1.293,P =0.200);ambulatory electrocardiogram showed that the number of 24 h premature ventricular contraction significantly decreased than that before surgery[(2 931 ± 1 315)beats vs (4 905 ± 1 855)beats] (t =7.522,P =0.014).Conclusion Bipolar radiofrequency ablation during coronary artery bypass grafting can effectively improve the perioperative prognosis of patients with ventricular arrhythmia caused by myocardial ischemia and scar reentry.
Keywords：Myocardial infarctionVentricular arrhythmiaBipolar radiofrequency ablationCoronary artery bypass grafting
Publication Date：2019-01-01
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：4( 493-496 )