Table 2 Device characteristics, indications and outcomes
Variable | Overall patient population no: 253 | Secondary prevention no: 190 | Primary prevention no: 63 | P value |
|---|---|---|---|---|
Arrhythmic indication for ICD | ||||
Ventricular Tachycardia | 155 (61.3) | 155 (81.6) | 0 | < 0.0001 |
Ventricular Fibrillation | 25 (9.9) | 25 (13.2) | 0 | 0.001 |
CPR, No documented arrhythmia | 10 (4.0) | 10 (5.3) | 0 | 0.146 |
Type of ICD implanted | ||||
Single Chamber ICD | 170 (67.2) | 158 (83.2) | 12 (19.0) | < 0.0001 |
Dual Chamber ICD | 31 (12.3) | 20 (10.5) | 11 (17.5) | 0.218 |
CRT-D | 52 (20.6) | 12 (6.3) | 40 (63.5) | < 0.0001 |
CRT D upgrade from single chamber ICD | 9 (3.6) | 8 (4.2) | 1 (1.6) | 0.561 |
Primary cardiac diagnoses | ||||
Ischemic Cardiomyopathy | 73 (28.9) | 61 (32.1) | 12 (19.0) | 0.068 |
Idiopathic Dilated Cardiomyopathy | 65 (25.7) | 30 (15.8) | 35 (55.6) | < 0.0001 |
Peripartum Cardiomyopathy | 7 (2.8) | 2 (1.1) | 5 (7.9) | 0.015 |
Hypertrophic Cardiomyopathy | 10 (4.0) | 7 (3.7) | 3 (4.8) | 0.994 |
ARVC | 32 (12.6) | 29 (15.3) | 3 (4.8) | 0.051 |
Cardiac Sarcoidosis | 10 (4.0) | 7 (3.7) | 3 (4.8) | 0.994 |
Long QT | 3 (1.2) | 3 (1.6) | 0 | 0.740 |
Brugada Syndrome | 2 (0.8) | 1 (05) | 1 (1.6) | 1.000 |
Surgically repaired CHD, No (%) | 11 (4.3) | 11 (5.8) | 0 | 0.117 |
No Primary diagnoses made | 44 (17.4) | 42 (22.1) | 2 (3.2) | 0.001 |
Appropriate ICD shock | 78 (30.8) | 64 (33.7) | 14 (22.2) | 0.121 |
Inappropriate ICD shock | 32 (12.6) | 28 (14.7) | 4 (6.3) | 0.129 |
Months of Follow up, Median (IQR) | 44 (25; 93) | 49 (15; 94) | 39 (14; 84) | 0.864 |
Mortality, No (%) | 41 (16.2) | 31 (16.3) | 10 (15.9) | 1.000 |