Sudden unexplained death in epilepsy (SUDEP) is defined as the sudden, unexpected death of an otherwise healthy person with epilepsy without apparent cause. Death occurs during normal activities and under benign circumstances; it does not arise from trauma, aspiration, or intractable status epilepticus.
SUDEP is most commonly attributed to one of three mechanisms: seizure-induced central apnea, cardiac arrhythmia, and neurogenic pulmonary edema. This review will focus on the potential cardiac causes of SUDEP after providing a brief overview of SUDEP and its other proposed mechanisms.