Table 1.
Baseline characteristics. SD, standard deviation; CAD, coronary artery disease; HCM, hypertrophic cardiomyopathy; BrS, Brugada syndrome; LQTS, long QT syndrome; ARVD, arrhythmogenic right ventricular dysplasia; LVEF, left ventricular ejection fraction; ICD, implantable cardioverter-defibrillator.
| Variables at baseline | All (n = 50) |
|---|---|
| Sex, male, n (%) | 43 (86) |
| Age at implantation, years, mean ± SD | 59 ± 14 |
| Underlying cardiac disease | |
| CAD, n (%) | 27 (54) |
| Non-ischemic cardiomyopathy, n (%) | 10 (20) |
| HCM, n (%) | 6 (12) |
| BrS, n (%) | 4 (8) |
| LQTS, n (%) | 2 (4) |
| ARVD, n (%) | 1 (2) |
| LVEF, mean ± SD | 41 ± 16 |
| Atrial fibrillation, n (%) | 4 (8) |
| Secondary prevention | 28 (56) |
| Type of ICDs | |
| Single-chamber | 35 (70) |
| Dual-chamber | 9 (18) |
| Biventricular | 6 (12) |
| Pacemaker dependency, n (%) | 2 (4) |
| Left-sided implant, n (%) | 49 (98) |
| Follow-up time, years, mean ± SD | 10.2 ± 2.9 |