Effect of radiofrequency on epicardial myocardium after ablation of ventricular arrhythmias from within coronary sinus

• DOI: 10.1111/pace.13429
• Publication Date: 2018-06-23T09:25:07Z
• Authors: Basar Candemir; Elif Ozyurek; Kutay Vurgun; Nazli Turan; Veysel Duzen; Huseyin Goksuluk; Nil Ozyuncu; Seda Kurklu; Timucin Altin; Omer Akyurek; Cetin Erol
• Keywords: Ventricular outflow tract; Great cardiac vein

Abstract Background Radiofrequency (RF) ablation of idiopathic ventricular arrhythmias (IVA) from the coronary venous system (CVS) has been increasingly performed, but real effect lesions CVS on epicardial myocardium not studied. Objective To compare effects RF delivered inside distal during IVAs originating left summit (LVS) with ablated right outflow tract (RVOT) using cardiac magnetic resonance imaging (CMRI). Methods Twenty consecutive patients who underwent acutely successful at initial appropriate sites, i.e., (Group 1, n = 10) or RVOT 2; were enrolled. Detailed contrast‐enhanced CMRI each patient was performed 3 months later. Presence and location scars, distance to measured analyzed. Results Group 1 consisted 10 2 patients. Three after ablation, only three in had detectable late gadolinium enhancement (LGE) while nine out evident LGE (P: 0.02). The mean anterobasal be 8.8 ± 1.6 mm 1. In cases that scar superior LV epicardium, 7.4 1.1 mm. Conclusions delivery is less likely produce compared RVOT. This may partially explain than ideal long‐term results LVS within great vein/anterior interventricular vein.