Table 1.
Basic characteristics of patients with implantable cardioverter-defibrillators implantation for primary and secondary prevention
| Variable | Group | Secondary prevention (n=93), n (%) | Primary prevention (n=136), n (%) | P* |
|---|---|---|---|---|
| Age (years) | 66.80±8.76 (47–86) | 62.54±11.61 (34–86) | 0.023 | |
| Gender | Male | 64 (68.8) | 84 (61.8) | 0.325 |
| Female | 29 (31.2) | 52 (38.2) | ||
| ICD installation period (months) | 22.11±11.29 (4–48) | 21.95±11.58 (3–48) | 0.918 | |
| Family history of sudden cardiac death | 21 (22.6) | 9 (6.6) | 0.001 | |
| LVEF (%) | 26.94±10.65 (10–55) | 26.07±7.13 (10–45) | 0.492 | |
| Antiarrhythmic drug at the time of ICD implantation | 50 (53.8) | 106 (77.9) | <0.0001 | |
| ICD embedding indication | ICMP | 54 (58.1) | 123 (90.4) | <0.0001 |
| DCM | 29 (31.2) | 12 (8.8) | ||
| HCM | 8 (8.6) | 0 (0) | ||
| ARVD | 2 (2.2) | 1 (0.7) |
*P<0.05 is significant. Data are presented as mean±SD (minimum–maximum) or frequency (%). ICD: Implantable cardioverter-defibrillator, LVEF: Left ventricular ejection fraction, ICMP: Ischemic cardiomyopathy, DCM: Dilated cardiomyopathy, HCM: Hypertrophic cardiomyopathy, ARVD/ARVC: Arrhythmogenic right ventricular dysplasia/cardiomyopathy, SD: Standard deviation