P954Who does not need a cardioverter-defibrillator anymore? Lessons from a generator replacement cohort of patients with cardioverter-defibrillators implanted in primary prevention. (20th June 2017) - Madeira, M.; Antonio, N.; Costa, M.; Ventura, M.; Cristovao, J.; Nascimento, J.; Elvas, L.; Goncalves, L.; Pego, M.