Understanding breathing and arousal changes in patients with drug-resistant epilepsy

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the relationship between respiratory dysfunction and arousal states in patients suffering from drug-resistant epilepsy. It focuses on patients aged 18 to 55 who have experienced multiple focal to bilateral tonic-clonic seizures. The methodology includes video-EEG monitoring, respiratory monitoring, and polysomnography, along with hypercapnic challenges to assess respiratory responses during wakefulness and sleep. The goal is to better understand the interplay between seizures, sleep, and respiratory function, particularly in relation to the risk of Sudden Unexpected Death in Epilepsy (SUDEP).

Why it matters

Who can join: the full rules

Inclusion Criteria:

Patients :

1. Written informed consent obtained from study subject and ability for study subject to comply with the requirements of the study
2. Aged 18 to 55 years old
3. Diagnosis of focal epilepsy
4. Epilepsy is refractory to treatment, as defined by the International League Against Epilepsy
5. Patients with ≥3 focal to bilateral tonic-clonic seizure (FBTCS) during the past 18 months
6. Patients who had undergone long-term video-EEG (VEEG) monitoring for presurgical evaluation in the past ten years within the Department of Functional Neurology and Epileptology at Hospices Civils de Lyon, ensuring access to detailed information about:

   * occurrence of transient respiratory dysfunction during the focal seizures, transient hypoxemia during strictly focal seizures being observed in 40% of patients(39) and in 87% of patients with at least one FBTCS during the VEEG monitoring(46)
   * localization of the epileptogenic zone, the risk of peri-ictal respiratory dysfunction being greater in seizures of temporal lobe origin than in extra-temporal seizures, even after FBTCS

Healthy subjects

1. Written informed consent obtained from study subject and ability for study subject to comply with the requirements of the study
2. Aged 18 to 55 years old

Exclusion Criteria:

Patients

1. Ongoing or chronic respiratory and/or cardiac insufficiency
2. Obstructive sleep-apnea syndrome
3. Ongoing treatment with selective serotonin reuptake inhibitor
4. Patient treated with vagal nerve stimulation
5. Pregnant women or breastfeeding women, based on declarations at V0
6. Persons receiving psychiatric care
7. Persons deprived of their liberty by a judicial or administrative decision
8. Adults subject to a legal protection measure (guardianship, curatorship)
9. Persons not affiliated to a social security scheme or beneficiaries of a similar scheme
10. Positive urine pregnancy test at V1, if applicable

Healthy subjects

1. History of epilepsy
2. Ongoing or chronic respiratory and/or cardiac insufficiency
3. Obstructive sleep-apnea syndrome
4. Pregnant women, women in labor or breastfeeding women, based on declarations at V0
5. Persons receiving psychiatric care
6. Persons deprived of their liberty by a judicial or administrative decision
7. Adults subject to a legal protection measure (guardianship, curatorship)
8. Persons not affiliated to a social security scheme or beneficiaries of a similar scheme
9. Positive urine pregnancy test at V1, if applicable

Where it's running

• Hôpital Pierre Wertheimer
  Bron, Rhone, France Recruiting

Study contacts

• Study coordinator: Sylvain Pr Rheims
• Email: sylvain.rheims@chu-lyon.fr
• Phone: 0472357106

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.