Failure of arousal
The study results revealed that most SUDEP cases occurred during sleep without a witness. Dr. Whittemore believes that sleeping with one’s face in a pillow may prevent the reflex required to turn the head to breathe. “It’s sort of a failure of arousal that is potentially the underlying mechanism.”
In some cases, there are signs children had a seizure just prior to death, said Dr. Whittemore.
The researchers have now collected information for 2018 and 2019 and plan to add these data to the current 3-year results. “We will now expand our analysis to include these new numbers to make sure the trends we saw in those 3 years are continuing,” said Dr. Whittemore. The new results should help raise awareness that SUDEP is not as rare as previously believed.
Parents of children with epilepsy can take steps to help reduce the risk for SUDEP, she added. For example, they can use night monitors, and for the children at highest risk (e.g., those with Dravet syndrome), they can use an “alarm blanket” that alerts them when the child moves.
Much is still unknown
Commenting on the study, Daniel Goldenholz, MD, PhD, division of epilepsy, department of neurology, Beth Israel Deaconess Medical Center, New York, who has participated in SUDEP research, said it “raises important questions about SUDEP in children and about racial disparities in SUDEP.”
The understanding of SUDEP so far “leaves much to be desired,” said Dr. Goldenholz. “We don’t yet know why it happens, and we don’t yet know how to prevent it.” The current study “brings a couple of new data points to the table which need further validation, confirmation, and explanation.”
The Sudden Death in Young Case Registry is supported by the National Heart, Lung, and Blood Institute; the National Institute of Neurological Disorders and Stroke; and the CDC. The investigators and Dr. Goldenholz disclosed no relevant financial relationships.
A version of this article originally appeared on Medscape.com.