Neurological Impairment in a Young Population Exposed to Recreational Nitrous Oxide

NCT ID: NCT05469321

Last Updated: 2024-01-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

20 participants

Study Classification

OBSERVATIONAL

Study Start Date

2022-08-22

Study Completion Date

2024-12-31

Brief Summary

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Nitrous oxide (N2O) is a colorless, flammable, analgesic gas used in surgery and dentistry. The consumption of N2O has increased among young French people aiming to relax because of its short-lived neuropsychological effect (euphoria, depersonalization, analgesia) and its wide availability on the market.

It can be responsible in case of prolonged use and overdose of a vitamin B12 deficiency with possible neuropsychiatric complications: sensitivomotor neuropathy, myelopathy, behavioral and cognitive disorders of acute or sub-acute installation.

N2O inhibits the activitý of methionine synthase, decreases the activitý of methylmalonyl-CoA mutase leading to vitamin B12 deficiency but in addition to the interference with vitamin B12 metabolism there seems to be a direct toxicity of N20.

Myelin alteration was the typical electromyography finding but new axonal profiles were also described. Since myelopathy affects both the posterior and lateral cords, combined spinal cord sclerosis is the most common location of injury associated with N2O intoxication.

Detailed Description

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Conditions

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Neuropathy

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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Patients

patients presenting to the CHU of Nîmes for an acute or subacute neurological picture after having consumed N2O.

None, pure observationnal study

Intervention Type OTHER

None, pure observational study following the usual management of the patients

Interventions

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None, pure observationnal study

None, pure observational study following the usual management of the patients

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

patients presenting to the CHU of Nîmes with an acute or sub-acute neurological picture after having consumed N2O

\-
Minimum Eligible Age

15 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Centre Hospitalier Universitaire de Nīmes

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Anissa MEGZARI

Role: STUDY_DIRECTOR

Centre Hospitalier Universitaire de Nīmes

Locations

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CHU de Nîmes

Nîmes, , France

Site Status RECRUITING

Countries

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France

Central Contacts

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Ioana Maria ION

Role: CONTACT

06 22 920361

Facility Contacts

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Ioana ION

Role: primary

+33466683261

Other Identifiers

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Local/2022/II-03

Identifier Type: -

Identifier Source: org_study_id

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