Comparison of Parameters in 39 Patients with Organic Heart Diseases from Groups A and B
| Parameter | Group A (n = 16) | Group B (n = 23) | P |
|---|---|---|---|
| Age (y) | 57.6 ± 12.7 | 52.4 ± 10.9 | 0.1790 |
| Sex of the patient | 1.0000 | ||
| Male (n) | 12 | 18 | |
| Female (n) | 4 | 5 | |
| LVEF (%) | 37 ± 16 | 46 ± 14 | 0.0857 |
| LVDd (mm) | 60 ± 11 | 55 ± 10 | 0.1288 |
| Early HMR of MIBG activity | 1.93 ± 0.33 | 2.07 ± 0.33 | 0.2060 |
| Late HMR of MIBG activity | 1.60 ± 0.32 | 1.87 ± 0.35 | 0.0184 |
| Washout rate (%) | 40 ± 11 | 31 ± 14 | 0.0409 |
| Follow-up (mo) | 10 ± 11 | 18 ± 11 | 0.0475 |
| SAECG filtered QRS | 143.4 ± 34.3 | 126.6 ± 17.3 | 0.1220 |
| Root mean square | 23.8 ± 18.0 | 40.7 ± 93.8 | 0.6225 |
| Low-amplitude signal | 39.9 ± 17.8 | 39.3 ± 15.0 | 0.9323 |
| ANP | 73 ± 56 | 47 ± 30 | 0.0676 |
| BNP | 243 ± 186 | 101 ± 92 | 0.0032 |
| Concomitant medication | |||
| β-blocker | 68.8% (11/16) | 60.9% (14/23) | 0.8873 |
| I-antiarrhythmic drug | 43.8% (7/16) | 34.8% (8/23) | 0.8168 |
| Amiodarone | 56.3% (9/16) | 47.8% (11/23) | 0.8477 |
| ACEI/ARB | 75.0% (12/16) | 52.2% (12/23) | 0.1923 |
| Diuretic | 56.3% (9/16) | 34.8% (8/23) | 0.3165 |
| Congestive heart failure | 75.0% (12/16) | 56.5% (13/23) | 0.3171 |
| Positive SAECG (n = 28) | 70.0% (7/10) | 61.1% (11/18) | 0.7029 |
| Electrophysiologic study (n = 29) | |||
| Induction of VT/fibrillation | |||
| Sustained or nonsustained | 100% (12/12) | 100% (17/17) | 1.0000 |
| Sustained | 83.3% (10/12) | 52.9% (9/17) | 0.1261 |
| Clinical VT | |||
| Sustained or nonsustained | 100% (16/16) | 91.3% (21/23) | 0.5034 |
| Sustained | 87.5% (14/16) | 78.3% (18/23) | 0.6776 |
LVDd = left ventricular diameter; SAECG = signal-averaged electrocardiographic findings; ACEI = angiotensin-converting enzyme inhibitor; ARB = angiotensin receptor blocker.