Does intellectual disability increase sudden unexpected death in epilepsy (SUDEP) risk?

Area of Science:

• Neurology
• Public Health
• Disability Studies

Background:

• Intellectual disability (ID) affects 1.4 million in the UK, with a high prevalence of epilepsy (125,000 individuals).
• Epilepsy in individuals with severe ID (FSIQ < 50) has a high rate of treatment resistance.
• Sudden unexpected death in epilepsy (SUDEP) is a major cause of mortality in this population.

Purpose of the Study:

• To review the literature on risk factors for SUDEP.
• To assess the extent to which intellectual disability (ID) is considered as a risk factor for SUDEP.
• To examine the influence of healthcare system type on the consideration of ID in SUDEP research.

Main Methods:

• A comprehensive literature review was conducted.
• Studies exploring SUDEP risk factors were identified and analyzed.
• The consideration of ID as a risk factor and the healthcare system context were evaluated.

Main Results:

• Out of 49 studies on SUDEP risk factors, 23 (approx. 50%) considered ID.
• 14 of these studies (60%) identified ID as a significant risk factor for SUDEP.
• The majority of studies (60%) were from publicly funded healthcare systems.

Conclusions:

• Intellectual disability (ID) is an under-recognized risk factor for SUDEP.
• There is a need for improved reporting of ID definitions and mortality data in SUDEP research.
• Standardized reporting of mortality rates and the impact of institutionalization is crucial.