Intraoperative radiofrequency ablation for permanent atrial fibrillation during concomitant cardiac surgery
Cao Wei
Shi Kaihu
Xu Shengsong
Sha Jiming
Abstract：Objective To summarize the clinical outcomes of modified maze procedure using bipolar radiofrequency ablation accompanied with valve replacement for the surgical treatment of persistent atrial fibrillation (AF) and heart valve diseases.Methods A total of 70 patients with persistent AF and heart valves diseases had surgical treatment from April 2010 to August 2013 in the Second Affiliated Hospital of Anhui Medical University,including 42 males and 28 females with age 38-76,average (50 ± 11) years old.Rheumatic heart disease was in 65 cases and 5 cases of them suffered degenerative disease of the heart valves.The Medtronic Cardioblate 68000 flush bipolar radiofrequency ablation system was applied to all patients.Ring RF ablation procedures consisted bilateral pulmonary vein isolation,left atrial appendage resection,left and right atrial ablation (modified Cox-maze Ⅲ surgical path) and Marshall ligament resection.All patients had amiodarone therapy after surgery for 3 to 6 months.Results The surgery of 70 patients was successfully completed.The mean atrial fibrillation duration was (14 ±6) min.All patients took amiodarone hydrochloride after surgery.The day after surgery,62 cases atrial fibrillation rhythm turned into sinus rhythm.Paroxysmal atrial fibrillation occurred in 6 cases two weeks after surgery and 5 cases turned into sinus rhythm after intravenous amiodarone.In all patients,2 of them suffered from Ⅲ° atrioventricular block after surgery and permanent pacemakers were applicated.There were no cardiac perforation and non-hospital mortality.The average hospitalization was (12.3 ± 2.1) d.The mean follow-up was (9 ± 5) months.82.8％ (58/70) of patients had sinus rhythm,14.3％ (10/70) were in AF rhythm and 2.9％ (2/70) in paced rhythm 6 months after operation.Conclusion Modified maze procedure using bipolar radiofrequency ablation is a simple,safe and effective surgical procedure for the treatment of persistent atrial fibrillation.
Keywords：Persistent atrial fibrillationBipolar radiofrequency ablationHeart valve replacement
Publication Date：2014-07-30
Online Publishing Date：2026-09-14(First online date of this platform, not the publication date of the document)
Pages：3( 957-959 )