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NCT00000252 · ClinicalTrials.gov registry record · Phase 2
Lack of Acute Tolerance Development to Effects of Nitrous Oxide - 4
A Phase 2 study, sponsored by University of Chicago.
- Completed
- Registry status
- Phase 2
- Development phase
- 11
- Enrollment target
NCT00000252: Completed Phase 2 study, sponsored by University of Chicago.
NCT00000252 is a Phase 2 study that has completed, run by University of Chicago. The registered enrollment target is 11 participants, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (92% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00000252, a Phase 2 study, has completed, sponsored by University of Chicago.
- COMPLETED
- Registry status
- Phase 2
- Development phase
- 11 participants
- Enrollment target
Study Summary
The purpose of this study is to conduct experiments to examine subjective and reinforcing effects of nitrous oxide. Mood altering and psychomotor effects will be tested on non-drug abusers and preference procedures will be used to assess reinforcing effects. To examine the lack of acute tolerance development to the subjective, cognitive, and psychomotor effects of nitrous oxide in healthy volunteers.
Primary Outcome
Subjects will undergo psychomotor testing during 120 min inhalation session of each intervention
Interventions
- DRUG 0% N2O
- DRUG 40% N2O
- DRUG 20% N2O
- DRUG 10% N2O
- DRUG 30% N2O
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 11 participants |
| Start Date | 1994-06 |
| Est. Completion | 1996-06 |
| Phase | Phase 2 |
What the finished NCT00000252 record still lists
NCT00000252 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 11 participants, a relatively small participant target, below the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (92% lower).
The record links to 0 conditions, and to 5 interventions - of which 0% N2O is the first listed.
NCT00000252 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00000252 about?
NCT00000252 is a clinical study titled "Lack of Acute Tolerance Development to Effects of Nitrous Oxide - 4". The purpose of this study is to conduct experiments to examine subjective and reinforcing effects of nitrous oxide. Mood altering and psychomotor effects will be tested on non-drug abusers and preference procedures will be used to assess reinforcing effects. To examine the lack of acute tolerance de...
What is the current status of trial NCT00000252?
This trial is currently completed. It is a Phase 2 study. The enrollment target is 11 participants. The study started on 1994-06. Estimated completion is 1996-06.
What interventions are being tested in trial NCT00000252?
The interventions under investigation include: 0% N2O (DRUG), 40% N2O (DRUG), 20% N2O (DRUG), 10% N2O (DRUG), 30% N2O (DRUG).
Who is sponsoring clinical trial NCT00000252?
This trial is sponsored by University of Chicago, which has 796 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00000252's enrollment target sits among peer trials
11 1967th of 2000 higher than 33 of 2,000 other Phase 2 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 2 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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