Keywords: Abl, ablation catheter; BiVAD, biventricular assist device; Biventricular assist device; CS, coronary sinus catheter; Catheter ablation; LVAD, left ventricular assist device; LVIC, left ventricular inlet cannula; RV, right ventricular; RVAD, right ventricular assist device; RVIC, right ventricular inlet cannula; VT, Ventricular tachycardia; Ventricular assist device; Ventricular tachycardia.