Table 1.
Baseline patient characteristics and CMR LV functional parameters
| Patient characteristics | Total (n = 25) | With ICD therapy (N = 12) | Without ICD therapy (N = 13) | P value |
|---|---|---|---|---|
| Age, years old |
63.9 ± 10.0 |
63.7 ± 9.3 |
64.2 ± 10.9 |
0.91 |
| Male |
22 (88) |
10 (83.3) |
12 (92.3) |
0.55 |
| Primary prevention |
15 (60) |
6 (50) |
9 (69.2) |
0.44 |
| NYHA functional class |
1.48 ± 0.96 |
1.8 ± 1.0 |
1.2 ± 0.9 |
0.18 |
| Anti-arrhythmic |
5 (20) |
2 (16.7) |
3 (23.1) |
0.57 |
| Smoking |
14 (56) |
6 (50) |
8 (61.5) |
0.51 |
| Hypertension |
19 (76) |
10 (83.3) |
9 (69.2) |
0.50 |
| Diabetes |
5 (20) |
2 (16.7) |
3 (23.1) |
0.57 |
| Hyperlipidemia |
22 (88) |
11 (91.7) |
11 (84.6) |
0.67 |
| QRS duration (ms) |
114.9 ± 29.0 |
120.7 ± 36.4 |
109.6 ± 20.2 |
0.35 |
| Left bundle-branch block |
5 (20) |
3 (27.3) |
2 (15.4) |
0.50 |
|
CMR LV function |
|
|
|
|
| LV EF (%) |
26.2±10.4 |
22.1 ± 8.5 |
30.1 ± 10.9 |
0.054 |
| LV ESV (ml) |
179.6±81.1 |
203.5 ± 82.7 |
157.6 ± 76.2 |
0.16 |
| LV EDV (ml) |
236.6±82.2 |
256.2 ± 82.2 |
218.4 ± 81.2 |
0.26 |
| LV SV (ml) |
56.5±17.9 |
52.7 ± 18.9 |
60.1 ± 17.0 |
0.31 |
| LVM (g) | 106.1±29.9 | 110.9 ± 34.8 | 101.6 ± 25.2 | 0.45 |
Notes:
1. Continuous data are expressed as mean ± SD and categorical data as n (%).
2. CMR cardiovascular magnetic resonance, ICD Implantable cardioverter-defibrillator, NYHA New York Heart Association, LV left ventricular, EF ejection fraction, ESV end-systolic volume, SV stroke volume, EDV end-diastolic volume, LVM LV mass at end-diastolic phase.
3. P > 0.05 indicates no statistically significant difference between two groups.