Background The risk of sudden death from cardiac causes in the general population peaks from 6 a.m. to noon and has a nadir from midnight to 6 a.m. Obstructive sleep apnea is highly prevalent and associated with neurohormonal and electrophysiological abnormalities that may increase the risk of sudden death from cardiac causes, . Abusive head trauma, which includes head injuries from child abuse such as Shaken Baby Syndrome, is the leading cause of death in . What is SUDEP? SUDEP is the sudden, unexpected death of someone with epilepsy, who was otherwise healthy. In SUDEP cases, no other cause of death is found when an autopsy is done. Each year, about 1 in 1, adults and 1 in 4, children with epilepsy die from SUDEP. This is the leading cause of death in people with uncontrolled seizures.