Table 1 Baseline characteristics of the patients and implanted devices
Group A (n = 94) | Group B (n = 61) | P value | |
|---|---|---|---|
Age (year) | 52.9 ± 15.5 | 56.3 ± 14.1 | 0.16 |
Sex | |||
Male (%) | 75 (79.8) | 52 (85.2) | 0.52 |
Degree of prevention (%) | 0.77 | ||
Primary prevention | 29 (30.9) | 21 (34.4) | |
Secondary prevention | 65 (69.1) | 40 (65.6) | |
Type of arrhythmia (%) | 0.75 | ||
Ventricular tachycardia | 35 (37.2) | 20 (32.8) | |
Ventricular fibrillation | 36 (38.3) | 23 (37.7) | |
Type of device (no. of secondary prevention) | 0.11 | ||
Single-chamber ICD | 31 (24) | 22 (19) | |
Dual-chamber ICD | 48 (38) | 22 (18) | |
CRT-D | 15 (3) | 17 (3) | |
Underlying cardiac disease (no. of patients) | 0.21 | ||
Structurally normal | 45 (47.9) | 24 (39.3) | |
Structurally abnormal but normal LV systolic function | 19 (20.2) | 9 (14.8) | |
Structurally abnormal and reduced LV systolic function | 30 (31.9) | 28 (45.9) | |
NYHA class (%) | 0.26 | ||
NYHA I | 49 (52.1) | 24 (39.3) | |
NYHA II | 28 (29.8) | 21 (34.4) | |
NYHA III/IV | 17 (18.1) | 16 (26.2) | |
Hypertension (%) | 46 (48.9) | 30 (49.2) | 1 |
Diabetes mellitus (%) | 16 (17.0) | 16 (26.2) | 0.24 |
Chronic kidney disease (%) | 5 (5.3) | 12 (19.7) | 0.01 |
Cerebrovascular attack (%) | 9 (9.6) | 7 (11.5) | 0.91 |