Objectives Radiofrequency catheter ablation of superior ventricular tachycardia (SVT) is unusual because of the anatomy. The aim of this study is to discuss the strategy of radiofrequency catheter ablation of SVT in patients with persistent left superior vena cava (PLSVC).
Methods From June 2008 to June 2011, 17 patients with PLSVC and SVT underwent one of the following RFCA: AV node modification (8 patients), left accessory pathway (6 patients), paroxysmal atrial fibrillation (3 patient).
Results Coronary sinus access through left subclavian vein in each patient. AV node modification was carried out in 8 patients. Four patients with left accessory pathway were ablated through aortic retrograde approach, and the other two patients with left side accessory pathway were accomplished through transseptal approach. Three patients with PAF were cured through circumferential pulmonary vein isolation after atrium septum puncture. The success rate was 100%, and complication was not occurred.
Conclusions Even though the success rate of RFCA with PLSVC and SVT was high and the complication rate was low, the recognisation of PLSVA, the skills of ablation and the precaution of complications should be payed attention.