Viewing Study NCT03310697



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Last Modification Date: 2024-10-26 @ 12:33 PM
Study NCT ID: NCT03310697
Status: COMPLETED
Last Update Posted: 2021-10-28
First Post: 2017-07-20

Brief Title: Toxicological Screening by GC-MS Among Children Admitted for a First Afebrile Seizure
Sponsor: University Hospital Toulouse
Organization: University Hospital Toulouse

Study Overview

Official Title: Toxicological Screening by GC-MS Among Children Admitted for a First Afebrile Seizure CASTox a Pilot Study
Status: COMPLETED
Status Verified Date: 2021-10
Last Known Status: None
Delayed Posting: No
If Stopped, Why?: Not Stopped
Has Expanded Access: False
If Expanded Access, NCT#: N/A
Has Expanded Access, NCT# Status: N/A
Acronym: CASTox
Brief Summary: Before the age of 14 years 1 of the paediatric population will develop a seizure The only systematically required complementary examination is an electroencephalogram EEG Additional biological or radiological examinations depend on the circumstances the past medical history of the patient and other associated symptoms or clinical signs A seizure can be the first sign of acute intoxication and represents a severity criterion Failure to detect the toxic cause of a seizure can lead to a delay in the access or administration of an antidote if applicable This can lead to target organ toxicity due to the absence of specific treatment In the current French guidelines for a first seizure a toxicological analysis is recommended if there is a possibility of exposure to toxic medications or products However this screening is often missing unless a witness suggests that the child may have been exposed to a toxinThe recognition of a paediatric toxidrome is low among paediatricians paediatric neurologists or emergency physicians This is due to a lack of knowledge in clinical toxicology and the screening for toxic aetiology is not frequently or irrelevantly prescribed There is an increasing number of proconvulsive molecules on the market These molecules are not targeted in classic toxic screening As result a toxic cause of a seizure may be missed unless specific screening is performed For all these reasons little is known about the prevalence of toxic causes after a first episode of non-febrile seizure and probably under estimated in the paediatric population especially in young children New technologies for toxic detection like chromatography combined with mass spectrometry allow wide screening on different matrix Initially dedicated to forensic analysis they are more widely accessible for the exploration of the patients The CASTox study is based on this context

The first aim will be to evaluate the prevalence of a toxicological cause by a systematic blood and urine screening of children admitted to Toulouse paediatric emergency unit for a first afebrile seizure Moreover secondary aim will be to describe the effect of the systematic screening on the management of the children
Detailed Description: Before the age of 14 years 1 of the paediatric population will develop a seizure The only systematically required complementary examination is an electroencephalogram EEG Additional biological or radiological examinations depend on the circumstances the past medical history of the patient and other associated symptoms or clinical signs A seizure can be the first sign of acute intoxication and represents a severity criterion Failure to detect the toxic cause of a seizure can lead to a delay in the access or administration of an antidote if applicable This can lead to target organ toxicity due to the absence of specific treatment In the current French guidelines for a first seizure a toxicological analysis is recommended if there is a possibility of exposure to toxic medications or products However this screening is often missing unless a witness suggests that the child may have been exposed to a toxinThe recognition of a paediatric toxidrome is low among paediatricians paediatric neurologists or emergency physicians Since the end of the 90s the molecules usually incriminated with seizure onset after intoxication are with a high risk polycyclic antidepressant theophylline isoniazid intermediate risk fluoroquinolones tramadol lidocaine lithium anticonvulsive medications and low risk selective serotonin reuptake inhibitors Among infants the molecules are quite different mainly because of the unintentional or malicious aspect of the intoxication and are dominated by sympathomimetic agents antihistamine drugs anticholinergic molecules antidepressants and muscle relaxants New drugs have been associated with seizures in young intoxicated children like bupropion tramadol and venlafaxine These agents are not detected by usual toxic analysis

For each patient and after getting the signed consent form a toxicological analysis will be performed on blood and urine samples to extensively screen for proconvulsive molecules alcohols polycyclic antidepressants salicylates anticonvulsive medications carbamazepine phenytoin valproic acid drugs cocaine and its metabolites amphetamines methamphetamine ecstasy cannabis buprenorphine methadone mephedrone codeine pholcodine hydromorphone benzodiazepines caffeine theophylline lidocaine isoniazid mefenamic acid tramadol ephedrine

This analysis will be performed using classic approach immunoenzymatic detection and by chromatography GC associated to mass spectrometry MS Laboratory of Toxicology University Hospital of Toulouse - The other clinical data biological results or tests requested by the physician in charge will be reported from the computerized medical file of each patient

For each patient hospitalized a follow-up visit will be scheduled during hospitalization in order to report management of the children

Study Oversight

Has Oversight DMC: None
Is a FDA Regulated Drug?: False
Is a FDA Regulated Device?: False
Is an Unapproved Device?: None
Is a PPSD?: None
Is a US Export?: None
Is an FDA AA801 Violation?: None
Secondary IDs
Secondary ID Type Domain Link
2017-A01319-44 OTHER IDRCB None