Depression Clinical Trial
Official title:
Nitrous Oxide as Treatment for Major Depression - a Pilot Study
NCT number | NCT02139540 |
Other study ID # | 201204023 |
Secondary ID | |
Status | Completed |
Phase | Phase 2 |
First received | |
Last updated | |
Start date | November 2012 |
Est. completion date | April 2015 |
Verified date | January 2020 |
Source | Washington University School of Medicine |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Major depressive disorder (MDD) is a global medical problem with significant shortcomings in current therapy. Chief among these is the delay between initiation of pharmacologic therapy and clinical improvement in symptoms. Recently ketamine, an NDMA-receptor antagonist has been shown to rapidly and effectively reverse the symptoms of MDD. Nitrous oxide, another NMDA-receptor antagonist, may produce the same effect with a cleaner side-effect profile and perhaps without the need for intravenous access and anesthesia personnel. Therefore, we propose conducting a pilot randomized placebo controlled double-blind crossover study in which patients will receive up to 50% nitrous oxide in oxygen or up to 50% oxygen in air for a period of one hour in addition to standard medical therapy. Depression severity will be assessed by a blinded observer pre-treatment, 30 minutes and 2 hours post treatment using the Hamilton depression rating scale.
Status | Completed |
Enrollment | 21 |
Est. completion date | April 2015 |
Est. primary completion date | April 2015 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 65 Years |
Eligibility |
Inclusion Criteria: 1. Adults 18-65 years of age 2. Major depressive disorder without psychosis with as determined by structured interview using the Mini-International Neuropsychiatric Interview (MINI). (baseline ) 3. HDRS-21 score of >18 4. Good command of the English language Exclusion Criteria: History of: 1. Bipolar disorder 2. Schizoprenia 3. Schizoaffective disorder 4. Obsessive-compulsive disorder, panic disorder 5. Substance abuse or dependence (except for remote substance abuse or dependence with remission at least 1 year prior to the study and except for nicotine use disorders) 6. Axis II diagnoses that may interfere with the patient's ability to improve on nitrous oxide 7. Acute medical illness that may pose subject at risk during nitrous oxide administration 8. Active suicidal intention (inability to contract for safety) 9. Active psychotic symptoms 10. Patients with significant pulmonary disease and/or requiring supplemental oxygen 11. Contraindication against the use of nitrous oxide: 1. Pneumothorax 2. Bowel obstruction 3. Middle ear occlusion 4. Elevated intracranial pressure 5. Chronic cobalamin and/or folate deficiency treated with folic acid or vitamin B12 6. Pregnant patients 7. Breastfeeding women 12. Previous administration of NMDA-receptor antagonists (e.g., ketamine) within the last 3 months 13. Current electro-convulsive therapy treatment 14. Any active suicidal ideation, intention, or planning (clinical assessment of suicidality will be used) |
Country | Name | City | State |
---|---|---|---|
United States | Barnes-Jewish Hospital | Saint Louis | Missouri |
Lead Sponsor | Collaborator |
---|---|
Washington University School of Medicine |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in Hamilton Depression Rating Scale HDRS-21 | (21-point Hamilton Depression Rating Scale) Scoring is based on the first 17 items on the 21 point scale. Eight items are scored on a 5-point scale, ranging form 0=not present to 4= severe. Nine are scored from 0-2. | baseline and 24 hours | |
Secondary | Change in Quick Inventory of Depressive Symptomatology - Self Report - QIDS -SR | [Quick Inventory of Depressive Symptomatology - Self Report] An item-by-item severity scale of 0 to 3, with possible total scores ranging from 0 to 84. The items on the scale are added together for a total score. Higher scores mean worse outcome. | baseline and 24 hours |
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