Completed
Effects of Subanesthetic Concentrations of Nitrous Oxide - 1
0 criteria met from your profileSee at a glance how your profile meets each eligibility criteria.
What is being tested
20% N2O
+ 30% N2O
+ 40% N2O
Drug
Who is being recruted
Opioid-Related Disorders
+ Substance-Related Disorders
From 21 to 37 Years
See all eligibility criteria
How is the trial designed
Treatment Study
Phase 2
Interventional
Study Start: September 1993
See protocol details
Summary
Principal SponsorUniversity of Chicago
Last updated: May 28, 2015
Sourced from a government-validated database.Claim as a partner
Study start date: September 1, 1993Actual date on which the first participant was enrolled.
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 effects of subanesthetic concentrations of nitrous oxide on cold-pressor pain in humans.
Principal SponsorUniversity of Chicago
Last updated: May 28, 2015
Sourced from a government-validated database.Claim as a partner
Protocol
This section provides details of the study plan, including how the study is designed and what the study is measuring.Design Details
10 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
Treatment Study
These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.
How participants are assigned to different groups/arms
In this clinical study, participants are assigned to groups based on specific criteria, such as their medical history or a doctor's recommendation. This approach ensures that treatments are given to those who may benefit the most, based on known factors.
Other Ways to Assign Participants
Randomized allocation: Participants are assigned randomly, like flipping a coin, to ensure fairness and reduce bias.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.
In this clinical study, participants are assigned to groups based on specific criteria, such as their medical history or a doctor's recommendation. This approach ensures that treatments are given to those who may benefit the most, based on known factors.
Other Ways to Assign Participants
Randomized allocation: Participants are assigned randomly, like flipping a coin, to ensure fairness and reduce bias.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.
How treatments are given to participants
Participants receive different treatments one after the other, switching from one to another during the study. This helps researchers understand how individuals respond to multiple treatments.
Other Ways to Assign Treatments
Single-group assignment: Everyone gets the same treatment.
Parallel assignment: Participants are split into separate groups, each receiving a different treatment.
Factorial assignment: Participants receive different combinations of treatments.
Sequential assignment: Participants receive treatments one after another in a specific order, possibly based on individual responses.
Other assignment: Treatment assignment does not follow a standard or predefined design.
Participants receive different treatments one after the other, switching from one to another during the study. This helps researchers understand how individuals respond to multiple treatments.
Other Ways to Assign Treatments
Single-group assignment: Everyone gets the same treatment.
Parallel assignment: Participants are split into separate groups, each receiving a different treatment.
Factorial assignment: Participants receive different combinations of treatments.
Sequential assignment: Participants receive treatments one after another in a specific order, possibly based on individual responses.
Other assignment: Treatment assignment does not follow a standard or predefined design.
How the effectiveness of the treatment is controlled
In a non placebo-controlled study, no participants receive an inert substance (placebo) to compare outcomes. Instead, all participants receive either the experimental treatment or an alternative treatment (often the Standard of Care). This method allows researchers to compare the effects of the experimental treatment with those of a different active intervention, rather than a placebo.
Other Options
Placebo-Controlled: A placebo is used to compare the effects of the experimental treatment with those of an inert substance, isolating the true treatment effect.
In a non placebo-controlled study, no participants receive an inert substance (placebo) to compare outcomes. Instead, all participants receive either the experimental treatment or an alternative treatment (often the Standard of Care). This method allows researchers to compare the effects of the experimental treatment with those of a different active intervention, rather than a placebo.
Other Options
Placebo-Controlled: A placebo is used to compare the effects of the experimental treatment with those of an inert substance, isolating the true treatment effect.
How the interventions assigned to participants is kept confidential
Neither participants nor researchers know who is receiving which treatment. This is the most rigorous way to reduce bias, ensuring that expectations do not influence the results.
Other Ways to Mask Information
Open-label: Everyone knows which treatment is being given.
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Triple-blind: Participants, researchers, and outcome assessors do not know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.
Neither participants nor researchers know who is receiving which treatment. This is the most rigorous way to reduce bias, ensuring that expectations do not influence the results.
Other Ways to Mask Information
Open-label: Everyone knows which treatment is being given.
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Triple-blind: Participants, researchers, and outcome assessors do not know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.
Eligibility
Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
From 21 to 37 YearsRange of ages for which participants are eligible to join.
Healthy volunteers allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Opioid-Related Disorders
Substance-Related Disorders
Criteria
Ensure optimum compatibilityAdd your profile to know your probability eligibility score.
Study Plan
Find out more about all the medication administered in this study, their detailed description and what they involve.Treatment Groups
Study Objectives
4 intervention groups
are designated in this study
This study does not include a placebo group
Treatment Groups
Group I
No Intervention
Subject inhaled 0% N2O for 40 minutes with cold immersion at 10 and 30 minutes
Group II
Active Comparator
Subject inhaled 20% N2O for 40 minutes with cold immersion at 10 \& 30 minutes
Group III
Active Comparator
Subject inhaled 30% N2O for 40 minutes with cold immersion at 10 and 30 minutes
Group IV
Active Comparator
Subject inhaled 40% N2O for 40 minutes with cold immersion at 10 and 30 minutes
Study Objectives
Primary Objectives
Subjects immersed non-dominant arm for 3 minutes twice in 2-3 degree C water while inhaling 0 (placebo), 20, 30, or 40% N2O for a total of 40 minutes
Study Centers
These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.This study has 1 location
Suspended
CompletedOne Study Center