ICD shocks and complications in patients with inherited arrhythmia syndromes

Background: There is limited information on the long-term outcomes of ICDs in patients with inherited arrhythmia syndromes. Methods: Prospective registry study of inherited arrhythmia patients with an ICD. Incidence of therapies and complications were measured as 5-year cumulative incidence proportions and analyzed with the Kaplan-Meier method. Incidence was compared by device indication, diagnosis type and device type. Cox-regression analysis was used to identify predictors of appropriate shock and device complication. Results: 123 patients with a mean follow up of 6.4 ± 4.8 years were included. The incidence of first appropriate shock was 56.52% vs 24.44%, p