| Abnormality | Frequency (%) |
| Sinus tachycardia | 12 (57.1) |
| Non sustained VT | 1 (4.8) |
| Polymorphic PVC | 1 (4.8) |
| Prolonged QT | 3 (14.3) |
| LBBB | 4 (19.0) |
| LVH | 8 (38.1) |
| ST-depression | 8 (38.1) |
| ST-elevation | 3 (14.3) |
| Pathologic Q-waves | 2 (9.5) |
| AF | 3 (14.3) |