cardiovascular system symptom ictal or post-ictal cardiac abnormality true https://www.ncbi.nlm.nih.gov/pubmed/26038597 Modified definition Seizure-related cardiac arrhythmias are frequently reported and have been implicated as potential pathomechanisms of Sudden Unexpected Death in Epilepsy (SUDEP). Sinus tachycardia is the most common cardiac consequence of epileptic seizures and may occur in up to 80% of seizures. It may be associated with palpitations, but not with clinical signs such as syncope. Of all clinically relevant ictal arrhythmias, ictal asystole has gained much attention as it may cause syncope and subsequent falls, fractures and traffic accidents. Seizure-related cardiac arrhythmias