Table 6.
Description of major arrhythmic events (MAEs). ICD: implantable cardioverter defibrillator, VT: ventricular tachycardia, VF: ventricular fibrillation.
| Major Arrhythmic Events | Acute Myocarditis (n = 11) | Myocarditis Sequelae (n = 24) | p |
|---|---|---|---|
| Time from ICD implantation to 1st MAE (days) | |||
| Median | 510 (240–804) | 111 (44–338) | 0.078 |
| ≤3 months | 2 (0.18) | 11 (0.46) | 0.150 |
| ≥1 year | 8 (0.73) | 7 (0.29) | 0.027 |
| Number of MAEs | |||
| Median number of MAEs | 4 (2–11) | 2 (1–6) | 0.114 |
| 1 | 2 (0.18) | 5 (0.23) | |
| 2 | 1 (0.09) | 9 (0.41) | |
| 3 | 2 (0.18) | 1 (0.04) | |
| ≥4 | 6 (0.54) | 7 (0.32) | |
| Number of patients presenting: | |||
| ≥1 VT | 10 (0.91) | 18 (0.75) | 0.223 |
| ≥1 VF | 3 (0.27) | 3 (0.12) | 0.352 |
| ≥1 Electrical storm | 6 (0.54) | 8 (0.33) | 0.283 |