Figure 2

Figure 2 : 

Twin atrioventricular node location with three-dimensional navigation system in a patient with congenitally corrected transposition of the great arteries, large ventricular septal defect and pulmonary stenosis. Ventricular activation by each node produces a different ventricular electrocardiogram pattern of activation. CS: coronary sinus; LA: left atrium; RA: right atrium; SVC: superior vena cava.