Fig. 4
Epicardial mapping scheme. 1 Left superior pulmonary vein; 2 right superior pulmonary vein; 3 left inferior pulmonary vein; 4 right inferior pulmonary vein; 5 inferior caval vein; 6 superior caval vein; 7 coronary sinus. The left and right atrium and Bachmann’s Bundle are mapped following a predefined epicardial mapping scheme along anatomical structures, by the use of an 192 polar electrode array (green)