P1503The first successful permanent pacemaker implantation via the left superior vena-cava to a collateral of the coronary sinus leading to the left ventricle in a lateral tunnel fontan patient. (20th June 2017) - Hadas, D.; Maschietto, N.; Ferretto, S.; Castaldi, B.; Quinto, L.; Milanesi, O.; Leoni, L.