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Lactic Acidosis During and After Seizures

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Mots clés

Abstrait

This project looks at the time course of lactic acid rise (if any) after seizures. Salivary and capillary lactic acid are tested. This type of measurement may be useful in signalling the occurrence or recent history of a seizure.

La description

Lactic acid is released from cells during seizures and elevates lactic acid levels in blood and saliva. The time course of this rise is unknown. If lactic acid rises within a few minutes of a seizure, than it might be feasible to develop lactic acid sensors to provide notification of a recent seizure. This could lead to better safety monitoring for people with epilepsy. This study was designed to utilize a commercially available lactic acid sensor (investigators have no connection with the sensor manufacturer and purchased the device at list price) to measure salivary lactic acid levels after a seizure during inpatient video-EEG epilepsy monitoring.

Rendez-vous

Dernière vérification: 04/30/2017
Première soumission: 03/27/2013
Inscription estimée soumise: 04/11/2013
Première publication: 04/15/2013
Dernière mise à jour soumise: 05/02/2017
Dernière mise à jour publiée: 05/04/2017
Date des premiers résultats soumis: 04/11/2016
Date de la première soumission des résultats du CQ: 05/02/2017
Date des premiers résultats publiés: 05/04/2017
Date de début réelle de l'étude: 06/30/2012
Date d'achèvement primaire estimée: 11/30/2014
Date estimée d'achèvement de l'étude: 11/30/2014

Condition ou maladie

Epilepsy

Phase

-

Groupes d'armes

BrasIntervention / traitement
Epilepsy inpatients
Patients with epilepsy recorded in an inpatient video-EEG monitoring unit after a seizure.

Critère d'éligibilité

Âges éligibles aux études 18 Years À 18 Years
Sexes éligibles à l'étudeAll
Méthode d'échantillonnageNon-Probability Sample
Accepte les bénévoles en santéOui
Critères

Inclusion Criteria:

1. Age 18-75 inclusive.

2. History of at least one generalized tonic-clonic (grand mal) seizure prior to enrollment in the study.

3. Undergoing monitoring in the Stanford Epilepsy Monitoring Unit.

Exclusion Criteria:

4. Not pregnant.

5. Inability to understand and sign the consent form.

6. No known history of mitochondrial disease or other metabolic disorders expected to affect blood lactate.

7. No known history of thrombophlebitis or excessive tendency to bleeding. Not on coumadin. Aspirin or anti-platelet agents are not an exclusion.

8. No known peripheral vascular disease affecting blood circulation to the fingers.

9. No painful peripheral neuropathy.

10. No Raynaud's disease or phenomenon.

Résultat

Mesures des résultats primaires

1. Salivary Lactic Acid Levels With Seizures [Within 10 minutes of end of the seizure]

The investigators will assess the salivary lactic acid within 10 minutes after end of a seizure. Values will consist of lactic acid measurements in saliva , immediately post-seizure. Units of measurement will be mM/L. A positive outcome will be a curve different from a straight line, with a rise and fall of lactate levels. Baseline lactate serum level is expected to be less than 2.2 mM/L.

2. Capillary Lactic Acid Levels With Seizures [Within 10 minutes of end of the seizure]

The investigators will assess the capillary lactic acid within 10 minutes after end of a seizure. Values will consist of lactic acid measurements in blood, within 10 minutes after the end of a seizure. Units of measurement will be mM/L. Baseline lactate serum level is expected to be less than 2.2 mM/L.

3. Intravenous Lactic Acid Levels With Seizures [Within 10 minutes of end of the seizure]

The investigators will assess the intravenous lactic acid within 10 minutes after end of a seizure. Values will consist of lactic acid measurements in serum collected by IV, immediately post-seizure. Units of measurement will be mM/L. A positive outcome will be a curve different from a straight line, with a rise and fall of lactate levels. Baseline lactate serum level is expected to be less than 2.2 mM/L.

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