Baseline characteristics of patients with ICD
| Characteristic | No. (%) of patients* n = 100 |
|---|---|
| Age, yr, mean ± SD | 62.5 ± 11.8 |
| Time since implant, yr, mean ± SD | 2.0 ± 2.3 |
| Sex, female | 29 (29) |
| Cardiovascular history | |
| Ischemic heart disease | 55 (55) |
| Nonischemic heart disease | 27 (27) |
| Hypertrophic obstructive cardiomyopathy | 5 (5) |
| Arrhythmogenic right ventricular cardiomyopathy | 1 (1) |
| Atrial fibrillation or flutter | 14 (14) |
| Stroke or transient ischemic attack | 3 (3) |
| Valvular disease | 2 (2) |
| Primary electrical disease | 4 (4) |
| Medications | |
| ACE inhibitor/ARB | 51 (51) |
| Diuretic | 47 (47) |
| Antiarrhythmic | 11 (11) |
| Antiplatelet | 68 (68) |
| Nitrates | 20 (20) |
| Oral anticoagulant | 25 (25) |
| Statin | 68 (68) |
| β-Blocker | 88 (88) |
| Calcium-channel blocker | 11 (11) |
| Digoxin | 4 (4) |
| Indication for ICD | |
| Primary prevention | 55 (55) |
| Secondary prevention | 45 (45) |
| Cardiac resynchronization therapy device | 13 (13) |
| No. of implanted leads (active and inactive) | |
| 1 | 52 (52) |
| 2 | 31 (31) |
| 3 | 15 (15) |
| 4 | 2 (2) |
Note: ACE = angiotensin-converting enzyme, ARB = angiotensin II receptor blocker, ICD = implantable cardioverter defibrillator, SD = standard deviation.
↵* Except where indicated otherwise.