Table 1.
Patient characteristics
| All patients (N = 230) | Patients with CIED (n = 100) | Patients without CIED (n = 130) | p value | |
|---|---|---|---|---|
| Age, years | 56 ± 17 | 60 ± 17 | 54 ± 17 | 0.014 |
| Female | 68 (30%) | 17 (17%) | 51 (39%) | 0.004 |
| Body surface area, m2 | 1.9 ± 0.2 | 1.9 ± 0.2 | 1.9 ± 0.2 | 0.167 |
| Cardiac rhythm | ||||
| Sinus rhythm | 211 (92%) | 85 (85%) | 126 (97%) | 0.146 |
| Atrial fibrillation | 19 (8%) | 15 (15%) | 4 (3%) | |
| Main clinical indication for CIED implantation | ||||
| AV block or symptomatic bradycardic | 6 (3%) | 6 (6%) | 0 (0%) | – |
| Cardiac arrest or sustained ventricular tachycardiac | 76 (33%) | 76 (76%) | 0 (0%) | – |
| LVEF ≤ 35% | 23 (10%) | 23 (23%) | 0 (0%) | – |
| Main clinical indication for CMR | ||||
| Coronary artery disease | 72 (31%) | 25 (25%) | 47 (36%) | 0.515 |
| Ventricular arrhythmia | 75 (33%) | 35 (35%) | 40 (31%) | |
| Dilated cardiomyopathy | 41 (18%) | 21 (21%) | 20 (15%) | |
| Hypertrophic cardiomyopathy | 18 (8%) | 8 (8%) | 10 (8%) | |
| Acute myocardial infarction | 24 (10%) | 11 (11%) | 13 (10%) | |
| LVEDV index (mL/m2) | 90 (73–108) | 101 (81–124) | 85 (71–100) | < 0.001 |
| LVESV index (mL/m2) | 42 (31–59) | 50 (41–86) | 38 (28–50) | < 0.001 |
| LVEF (%) | 51 ± 9 | 45 ± 14 | 54 ± 11 | < 0.001 |
| RVEDV index (mL/m2) | 76 (66–91) | 79 (67–93) | 75 (64–88) | 0.203 |
| RVESV index (mL/m2) | 34 (26–42) | 37 (27–49) | 33 (25–40) | 0.006 |
| RVEF (%) | 55 ± 9 | 52 ± 10 | 57 ± 7 | < 0.001 |
| Permanent pacemaker | 16 (7%) | 16 (16%) | – | – |
| ICDs | 84 (37%) | 84 (84%) | – | – |
Values are mean ± SD, median (interquartile range), or n (%)
CIED cardiac implanted electronic devices, AV atrioventricular, LV left ventricular, RV right ventricular, EDV end diastolic volume, ESV end systolic volume, EF ejection fraction, ICDs implanted cardioverter-defibrillators