Catheter ablation of epicardial accessory pathway associated with coronary sinus musculature

VernacularTitle:与冠状静脉窦肌袖相关的左侧心外膜旁道的射频消融
Keywords: Tachycardia,paroxysmal; Tachycardia,supraventricular; Catheter ablation
From: Chinese Journal of Cardiology 2013;41(5):377-381
CountryChina
Language:Chinese
Abstract: Objective To report the single-center clinical experience of catheter ablation of epicardial accessory pathway associated with coronary sinus musculature.Methods The data of 721 cases of left sided accessory pathway ablation were retrospectively analyzed.Ablation in the coronary sinus was performed in 17 (2.4 ％) cases [11 males,mean age(37 ± 11) years].Results Among the 17 cases,the accessory pathway was successfully ablated in middle cardiac vein and posterior lateral coronary sinus in 11 and 6 cases,respectively.Deverticulum of middle cardiac vein was seen in 2 cases.Mean time required to block the accessory pathway was (4.7 ± 2.7) s.An accessory pathway potential could be recorded at the target site in 10 out of 17 patients (59％).During a mean (21 ± 16) months follow up,only one patient experienced recurrence who was successfully cured by a second ablation session.No procedure related complication was reported.Conclusion About 2.4％ of left accessory pathway may have epicardial connection locating at middle cardiac vein or lateral part of the coronary sinus and require epicardial ablation.The epicardial ablation is safe and effective,warrants an excellent long-term results.