Fig. 4From: Successful catheter ablation of ventricular tachycardia in a patient with congenitally corrected transposition of great arteries after double switch operation a–c Catheter ablation near VSD patch from the left ventricle. Ablation site (white arrow) with fractionated diastolic potentials (Va, Vb, Vc) near the VSD patch from the left ventricle by an ablation catheter via the aorta [anteroposterior (AP) view (a), lateral view (b)], VT is terminated during catheter ablation by a conduction block between Va and Vb (c). * VSD ventricular septal defect, VT ventricular tachycardiaBack to article page