Comparison of clinical features in cardiogenic syncope versus seizure disorders
| Clinical features | Cardiogenic syncope | Seizure disorders |
|---|---|---|
| *Except sinus tachycardia. | ||
| †Within a year. | ||
| AEDs, antiepileptic drugs. | ||
| Loss of consciousness | Typical | Common |
| Episode duration | Seconds | Minutes |
| Involuntary movements | Common | Typical |
| Amnesia | Yes | Yes |
| Arrhythmia | Common | Rare* |
| Electroencephalogram | Slow waves Flattening | Focal or general spike activity |
| Responsive to AEDs | No | Often |
| Short term mortality† | High | Low |