Epilepsy, Generalized
Conditions
Brief summary
By bringing together the fields of seizure detection and that of Sudden Unexpected Death in Epilepsy (SUDEP), the current project aims at delineating which set of biosensors and related biomarkers would optimally characterize the severity of GTCS and the associated risk of SUDEP.
Detailed description
The main objective is to to evaluate which of the five biosignals considered, being, electrodermal activity (EDA), heart rate (HR), accelerometry (AC), arm-measurement of skin electromyography (EMG), and bed sensing of body movement (BM), or any of their combinations, offers the most accurate detection and quantification of our primary indicator of GTCS-severity, i.e. postictal EEG suppression (PGES).
Interventions
None listed
Sponsors
Centre Hospitalier Universitaire Vaudois
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
12 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Male or female aged 12 years or older, suffering from epilepsy * Patient undergoing Video-EEG recording * Patient at risk of presenting a GTCS during Video-EEG monitoring according to one of the following criteria (i) known to suffer from GTCS, or (ii) considered for Antiepileptic drugs (AED) tapering during Video-EEG (GTCS often occur during Video-EEG as a result of AED tapering for promoting the occurrence of seizures). * Patient willing to participate in the study and signed informed consent, by patient or legal representative when required.
Exclusion criteria
* Patients aged less than 12 years old * Patient not willing to participate in the study, and where informed consent from the patient or the legal representative, when required, cannot be obtained - Patient considered not at risk of presenting a GTCS during Video-EEG because they are not known to suffer GTCS and not candidate to AED tapering during Video-EEG.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| duration of PGES | Through study completion, an average of 4 years | The primary endpoint of the study is the duration of PGES, as defined by a postictal EEG flattening \<10microvolt over all scalp-EEG leads (time in seconds). When no PGES is observed, the duration will be coded as 0. This will be used as a dependent variable in the primary analysis. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| GTCS tonic phase duration on video-EEG recording | Through study completion, an average of 4 years | In seconds |
| GTCS clonic phase duration on video-EEG recording | Through study completion, an average of 4 years | In seconds |
| Postictal upper limb immobility duration on video-EEG recording | Through study completion, an average of 4 years | In seconds |
| Postictal whole-body immobility duration on video-EEG recording | Through study completion, an average of 4 years | In seconds |
| Postictal confusion duration on video-EEG recording | Through study completion, an average of 4 years | In seconds |
| Postictal bradycardia presence on Electrocardiogram (EKG) | Through study completion, an average of 4 years | Yes or No |
| Postictal bradycardia duration on EKG | Through study completion, an average of 4 years | In seconds |
| Type of GTCS | Through study completion, an average of 4 years | According to our previously published classification. |
| Postictal hypoxemia presence on pulse oxymetry | Through study completion, an average of 4 years | Yes or No |
| Postictal hypoxemia duration on pulse oxymetry | Through study completion, an average of 4 years | In seconds |
| Postictal hypoxemia nadir | Through study completion, an average of 4 years | Spo2 value in % |
| Peri-ictal tachycardia or bradycardia presence | Through study completion, an average of 4 years | Yes or No |
| Peri-ictal tachycardia or bradycardia duration | Through study completion, an average of 4 years | In seconds |
| Peri-ictal tachycardia or bradycardia intensity | Through study completion, an average of 4 years | Heart rate per minute |
| Abnormal heart-rate variability during the interictal period | Through study completion, an average of 4 years | Inter bits per millisecond |
| Postictal bradycardia nadir on EKG | Through study completion, an average of 4 years | Heart rate per minute |
Countries
Switzerland
Outcome results
None listed