Epicardial mapping and ablation of ventricular tachycardia from the coronary venous system in post-coronary bypass patients

被引:9
作者
Karimianpour, Ahmadreza [1 ]
Badertscher, Patrick [1 ]
Payne, Joshua [1 ]
Field, Michael [1 ]
Gold, Michael R. [1 ]
Winterfield, Jeffrey R. [1 ]
机构
[1] Med Univ South Carolina, Dept Med, Div Cardiol, Sect Clin Cardiac Electrophysiol, 171 Ashley Ave, Charleston, SC 29425 USA
关键词
Ventricular tachycardia; Catheter ablation; Coronary venous system; Epicardial ablation; CATHETER ABLATION; CARDIAC-SURGERY; SCAR; ACCESS; GUIDE;
D O I
10.1007/s10840-022-01250-9
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background Ventricular tachycardia (VT) ablation of mid- or epicardial substrate is difficult and requires a creative approach in patients with a history of coronary bypass that precludes percutaneous epicardial catheter manipulation. The coronary venous system (CVS) provides limited access to the epicardial surface of the heart. The objective of this study is to assess the feasibility, safety, and efficacy of epicardial mapping and ablation of VT substrates from the CVS in patients with history of coronary bypass. Methods Patients undergoing VT ablation at our institution were retrospectively reviewed. Those who had basal to mid ventricular substrate based on computed tomography imaging and history of coronary bypass were included. Endocardial and CVS mapping and ablation was performed in standard fashion using 3D electroanatomic mapping. The primary endpoint was defined as VT circuit elimination, termination, non-inducibility, or perturbation of the circuit. Results Of 192 consecutive VT ablations from 2017 to 2020, 35 (18%) had a history of coronary bypass and basal to the mid-ventricular substrate by imaging. There were no significant characteristic differences between the endocardial only (n = 19) vs endocardial + CVS (n = 16) groups. In 14 (88%) of patients undergoing CVS mapping, the VT circuit was identified to be within access from the epicardial surface. Ablation was attempted in 8 (57%) of these patients, and the primary endpoint was reached in 88% of those undergoing CVS ablation. There were no complications related to CVS ablation. Conclusion Mapping and ablation of mid- or epicardial VT circuits from the CVS branches are feasible and safe and may be helpful in the treatment of VT in patients who are otherwise not candidates for percutaneous epicardial ablation.
引用
收藏
页码:145 / 151
页数:7
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