Clinical trial • Phase IV • Psychiatry
nitrous oxide, oxygen for Suicidal ideation
Phase IV trial of nitrous oxide, oxygen for Suicidal ideation.
Overview
- Trial Therapeutic Area
- Psychiatry
- Trial Disease
- Suicidal ideation
- Trial Stage
- Phase IV
- Drug Modality
- Small molecule
Key dates
- Initial CTIS Submission Date
- 22-01-2024
- First CTIS Authorization Date
- 23-04-2024
Trial design
Randomised, medical air (compressed gas composed of nitrogen and oxygen) inhalation for 1 hour; procedure and monitoring same as experimental arm. experimental arm: kalinox (50% nitrous oxide / 50% oxygen) inhalation for 1 hour (administration using high-concentration face mask; n2o flow approximately 6–9 l/min; oxygen given after exposure for 15 minutes).-controlled Phase IV trial in France.
- Randomised
- Yes
- Comparator
- Medical Air (compressed gas composed of nitrogen and oxygen) inhalation for 1 hour; procedure and monitoring same as experimental arm. Experimental arm: KALINOX (50% nitrous oxide / 50% oxygen) inhalation for 1 hour (administration using high-concentration face mask; N2O flow approximately 6–9 L/min; oxygen given after exposure for 15 minutes).
- Target Sample Size
- 30
- Trial Duration For Participant
- 30
Eligibility
Recruits 30 Vulnerable populations not selected. Participants must provide signed informed consent ("Ayant signé le consentement éclairé"). Legal incapacity is an exclusion ("Incapacité légale"); patients under coercive care are excluded ("Patient faisant l’objet d’une mesure de soins sous contrainte"). No minors are eligible (age 18–50)..
- Pregnancy Exclusion
- Grossesse et/ou allaitement
- Vulnerable Population
- Vulnerable populations not selected. Participants must provide signed informed consent ("Ayant signé le consentement éclairé"). Legal incapacity is an exclusion ("Incapacité légale"); patients under coercive care are excluded ("Patient faisant l’objet d’une mesure de soins sous contrainte"). No minors are eligible (age 18–50).
Inclusion criteria
- {"criterion_text":"- Age : 18 à 50 ans (la limite d’âge est fixée à 50 ans afin de limiter les comorbidités somatiques et les troubles cognitifs mineurs qui peuvent être plus retrouvés au-delà de cette limite d’âge)\n- Sujet ayant des idées de suicide actives lors de l’évaluation psychiatrique aux urgences\n- Sujet ayant un score sur l’échelle d’idéation suicidaire de Beck (SSI) supérieur ou égal à 8\n- Francophone\n- Sujet admis aux urgences psychiatriques du CHRU de Tours\n- Pouvant se soumettre au port d’un masque facial\n- Ayant signé le consentement éclairé\n- Affilié(e) à la sécurité sociale"}
Exclusion criteria
- {"criterion_text":"- Présence d’un trouble psychotique, d’une maladie neurodégénérative, d’un trouble connu d’usage de substances (à l’exception du tabac ou de la caféine), d’une intoxication à une substance, d’une pathologique somatique instable\n- Grossesse et/ou allaitement\n- Contre-indication à l’utilisation du N2O\n- Incapacité légale\n- Participation à une autre étude clinique médicamenteuse\n- Patient faisant l’objet d’une mesure de soins sous contrainte"}
Endpoints
Primary endpoints
- {"endpoint_text":"- Intensité/sévérité des idées suicidaires évaluées par l’échelle d’Idéation suicidaire de Beck (SSI).","definition_or_measurement_approach":"Measured using the Beck Scale for Suicide Ideation (SSI); main objective specifies assessment 4 hours after inhalation (post 1-hour administration)."}
Secondary endpoints
- {"endpoint_text":"- Idées suicidaires évaluées par : Échelle SSI administrée également à 24h, 48h, J7 et J30 Échelle Columbia d’évaluation de la gravité du Risque suicidaire (C-SSRS) administrée à J0 et J7","definition_or_measurement_approach":"SSI administered at 24h, 48h, Day 7 and Day 30; C-SSRS administered at Day 0 and Day 7."}
- {"endpoint_text":"- Symptômes dépressifs mesurés par : Hétéro-évaluation par la « Montogomery-Asberg Depression Rating Scale » (MADRS) administrée à J0 et J7","definition_or_measurement_approach":"MADRS clinician-rated at Day 0 and Day 7."}
- {"endpoint_text":"- Symptômes dépressif mesurés par : Auto-questionnaire « Patient Health Questionnaire » PHQ-9 administré à J0, 4h, 24h, 48h et J7.","definition_or_measurement_approach":"PHQ-9 self-report at Day 0, 4 hours, 24 hours, 48 hours and Day 7."}
- {"endpoint_text":"- Intensité de l’anxiété mesurée par l’échelle « State and Trait Anxiety Inventory » (STAI) passée entre J0, 4h, 24h, 48h et J7.","definition_or_measurement_approach":"STAI administered at Day 0, 4 hours, 24 hours, 48 hours and Day 7."}
- {"endpoint_text":"- Amélioration globale mesurée par le changement du score de l’échelle « Clinical Global Impression - Improvement » (CGI) entre J0 et 4h, 24h, 48h et J7.","definition_or_measurement_approach":"CGI-Improvement change from baseline at 4 hours, 24 hours, 48 hours and Day 7."}
- {"endpoint_text":"- Passage à l’acte suicidaire dans le mois qui suit l’inclusion","definition_or_measurement_approach":"Occurrence of suicidal act within 1 month post-inclusion assessed by follow-up (telephone at ~30 days) and clinical records."}
- {"endpoint_text":"- Consommation de psychotrope à visée anxiolytique ou sédative entre H0 et H4.","definition_or_measurement_approach":"Recording of anxiolytic or sedative psychotropic medication consumption between time 0 and 4 hours post-administration."}
Recruitment
- Planned Sample Size
- 30
- Recruitment Window Months
- 19
- Consent Approach
- Informed consent obtained directly from the participant (requirement: "Ayant signé le consentement éclairé"). Women of childbearing potential receive a pregnancy test prior to randomisation. Participants must be Francophone. Legal incapacity is an exclusion; no assent process for minors (min age 18).
Methods
- In-person recruitment at the psychiatric emergency department of CHRU de Tours (France): patients admitted to psychiatric emergencies for suicidal ideation are approached, the study is presented, eligibility checked and informed consent obtained on-site.
Geography
- Total Number Of Sites
- 1
- Total Number Of Participants
- 30
France
- Earliest CTIS Part Ii Submission Date
- 22-04-2024
- Latest Decision Or Authorization Date
- 23-04-2024
- Processing Time Days
- 1
- Number Of Sites
- 1
- Number Of Participants
- 30
Sites
- Site Name
- Centre Hospitalier Regional Universitaire De Tours
- Department Name
- Psychiatric emergencies
- Principal Investigator Name
- Anaïs VANDEVELDE
- Principal Investigator Email
- anais.vandevelde@chu-tours.fr
- Contact Person Name
- Anaïs VANDEVELDE
- Contact Person Email
- anais.vandevelde@chu-tours.fr
- Number Of Participants
- 30
Sponsor
Primary sponsor
- Full Name
- Centre Hospitalier Regional Universitaire De Tours
- Organisation Type
- Hospital/Clinic/Other health care facility
- Country Of Registered Address
- France
Third parties
- {"country":"","full_name":"Fondation Avenir","duties_or_roles":"Monetary support","organisation_type":""}
Investigational products
- Investigational Product Name
- KALINOX 50%/50%, gaz medicinal comprime
- Active Substance
- nitrous oxide, oxygen
- Modality
- Small molecule
- Routes Of Administration
- INHALATION GAS
- Route
- Inhalation (gas)
- Authorisation Status
- Authorised (marketing authorisation present)
- Starting Dose
- 50% N2O / 50% O2 administered for 60 minutes (flow approximately 6–9 L/min)
- Dose Levels
- 50% N2O / 50% O2 for 60 minutes
- Frequency
- Single administration (1 hour)
- Maximum Dose
- 60 minutes per administration
- Investigational Product Name
- Medical Air
- Active Substance
- nitrogen, oxygen
- Modality
- Small molecule
- Routes Of Administration
- INHALATION GAS
- Route
- Inhalation (gas)
- Authorisation Status
- Authorised (marketing authorisation present)
- Starting Dose
- Medical air inhalation for 60 minutes (procedure mirrors experimental arm)
- Dose Levels
- Medical air for 60 minutes
- Frequency
- Single administration (1 hour)
- Maximum Dose
- 60 minutes per administration
- Combination Treatment
- Yes
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