Age of First Arrhythmic Event in Brugada Syndrome Data From the SABRUS (Survey on Arrhythmic Events in Brugada Syndrome) in 678 Patients

Background: Data on the age at first arrhythmic event (AE) in Brugada syndrome are from limited patient cohorts. The aim of this study is 2-fold: (1) to define the age at first AE in a large cohort of patients with Brugada syndrome, and (2) to assess the influence of the mode of AE documentation, sex, and ethnicity on the age at first AE. Methods and Results: A survey of 23 centers from 10 Western and 4 Asian countries gathered data from 678 patients with Brugada syndrome (91.3% men) with first AE documented at time of aborted cardiac arrest (group A, n=426) or after prophylactic implantable cardioverter-defibrillator implantation (group B, n=252). The vast majority (94.2%) of the patients were 16 to 70 years old at the time of AE, whereas pediatric ( 70 years) comprised 4.3% and 1.5%, respectively. Peak AE rate occurred between 38 and 48 years (mean, 41.9 +/- 14.8; range, 0.27-84 years). Group A patients were younger than in Group B by a mean of 6.7 years (46.1 +/- 13.2 versus 39.4 +/- 15.0 years; P