Epilepsy and Sleep-Related Breathing Disturbances

Area of Science:

• Neurology
• Sleep Medicine
• Pulmonology

Background:

• Epilepsy affects over 2.2 million Americans, presenting significant comorbidities and economic burdens.
• Obstructive sleep apnea (OSA) is twice as common in adults with epilepsy compared to controls, with incidence rising with age.
• Daytime sleepiness is an unreliable predictor of OSA in epilepsy patients.

Purpose of the Study:

• To review the established and emerging clinical, neurobiological, electrophysiological, and polysomnographic links between sleep-disordered breathing and epilepsy.
• To explore the potential impact of sleep therapies on seizure reduction.
• To examine the relationship between respiratory disturbances during seizures and sudden unexpected death in epilepsy (SUDEP).

Main Methods:

• Review of existing literature on sleep-disordered breathing in epilepsy.
• Analysis of studies on positive airway pressure therapy for epilepsy and OSA.
• Examination of polysomnographic data and neurophysiologic findings related to sleep and seizures.

Main Results:

• Positive airway pressure therapy has shown significant seizure reduction in epilepsy patients with OSA.
• Respiratory disturbances, including central apneas and oxygen desaturations, occur during ictal and postictal periods, potentially linked to SUDEP.
• Vagus nerve stimulation can induce respiratory changes during sleep, mimicking sleep apnea syndromes.

Conclusions:

• Sleep-disordered breathing is a significant concern in epilepsy management.
• Sleep therapies offer a potential avenue for improving seizure control and mitigating risks associated with epilepsy.
• Further research is needed to fully elucidate the role of OSA in SUDEP and optimize sleep interventions for epilepsy patients.