Table 1. Demographics of the 55 Spanish BrS patients included in the study.
The table shows the demographic characteristics of all the patients included in the study. Numbers in parentheses represent the relative percentages for each condition. T1 ECG refers to Type 1 BrS diagnostic electrocardiogram (ECG), obtained either spontaneously, or after drug challenge. The information regarding both the electrophysiological studies (EPS) and the treatment was not available for all the patients. Two of the patients that didn’t receive any treatment died, and were not taken into account for the calculations of percentages (+2 dead). ICD, intracardiac cardioverter defibrillator.
| Characteristic/Clinical presentation | Overall | Symptomatic Patients | Asymptomatic Patients |
|---|---|---|---|
| Number of Probands | 55 | 26 (47.3%) | 29 (52.7%) |
| Age at diagnosis, years | 41.9±13.3; range 5–68 | 37.7±14.3; range 5–63 | 45.7±11.4; range 24–68 |
| Males | 41 (74.5%) | 19/26 (73.1%) | 22/29 (75.9%) |
| Females | 14 (25.5%) | 7/26 (26.9%) | 7/29 (24.1%) |
| T1 ECG—spontaneous | 37 (67.3%) | 20/26 (76.9%) | 17/29 (58.6%) |
| T1 ECG—drug challenge | 18 (32.7%) | 6/26 (23.1%) | 12/29 (41.4%) |
| Family history of BrS | 25 (45.5%) | 11/26 (42.3%) | 14/29 (48.3%) |
| Positive EPS | 18/45 (40%) | 8/18 (44.4%) | 10/27 (37%) |
| Negative EPS | 27/45 (60%) | 10/18 (55.6%) | 17/27 (63%) |
| ICD | 32/46 (69.6%) | 20/23 (87%) | 12/23 (52.2%) |
| No treatment | 12/46 (26.1%); +2 dead | 1/23 (4.3%); +2 dead | 11/23 (47.8%) |