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ClinicalTrials.gov public records Last synced Sep 27, 2026, 11:01 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
Sickle Cell Disease, Cerebral Stroke
Interventions
Carbon Dioxide
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
6 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2032
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Pulmonary Vascular Disease
Interventions
Hyperpolarized 129Xenon gas
Drug
Lead sponsor
Bastiaan Driehuys
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nonin 4 Wavelength Cerebral Oximeter Study

NCT01762722
Conditions
Healthy
Interventions
Reduction of inspired oxygen
Device
Lead sponsor
Duke University
Other
Eligibility
21 Years to 35 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Cardiopulmonary Disease
Interventions
Echocardiography, Pulmonary Gas Exchange
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Withdrawn Not applicable Interventional Accepts healthy volunteers

Mechanisms of Pharyngeal Collapse in Sleep Apnea, Study C

NCT01738022
Conditions
Sleep Apnea
Interventions
Administration of gas mixtures
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Depressive Disorder, Major, Depressive Disorder, Treatment-Resistant
Interventions
Nitrous Oxide 25%, Nitrous Oxide 50%, Placebo Gas
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Asthma, Asthma in Children
Interventions
Vivatmo pro FeNO Test
Diagnostic Test
Lead sponsor
Bosch Healthcare Solutions GmbH
Industry
Eligibility
7 Years to 80 Years
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
6
States / cities
Birmingham, Alabama • Bakersfield, California • White Marsh, Maryland + 3 more
Recruiting Phase 2 Interventional Accepts healthy volunteers

Effect of Nitrous Oxide on Aggression.

NCT06118567
Conditions
Intermittent Explosive Disorder
Interventions
Nitrous oxide, Room Air
Drug
Lead sponsor
Ohio State University
Other
Eligibility
21 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Completed Phase 2 Interventional Results available

Normobaric Oxygen (NBO) Therapy in Acute Migraine

NCT01542307
Conditions
Migraine
Interventions
Oxygen, Room air
Biological
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Completed Not applicable Interventional Accepts healthy volunteers

Measuring the Neurological Benefits of Intermittent Hypoxia Therapy With MRI

NCT05183113
Conditions
Spinal Cord Injuries
Interventions
Acute Intermittent Hypoxia
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 60 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Completed No phase listed Observational Accepts healthy volunteers

Evaluation Inhaled Corticosteroids on Exhaled Nitric Oxide Gas Exchange

NCT00568347
Conditions
COPD
Interventions
fluticasone 100mcg/ salmeterol 50mcg, fluticasone 250/salmeterol 50, Salmeterol, salmeterol and fluticasone propionate
Drug
Lead sponsor
Arthur F Gelb MD
Individual
Eligibility
20 Years to 85 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2013
U.S. locations
1
States / cities
Lakewood, California
Conditions
Pulmonary Fibrosis, Pulmonary Hypertension
Interventions
INOpulse®, Placebo, Long Term Follow Up
Combination Product
Lead sponsor
Bellerophon
Industry
Eligibility
18 Years to 85 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
23
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 19 more
Conditions
Respiratory Insufficiency, Anoxemia
Interventions
Nitrogen gas, inhaled nitric oxide
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
Up to 16 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
16
States / cities
Orange, California • Stanford, California • Denver, Colorado + 13 more
Conditions
Post-Cardiac Arrest Syndrome
Interventions
Xenon
Combination Product
Lead sponsor
Invero Pharma, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,436 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
8
States / cities
Hartford, Connecticut • Gainesville, Florida • Gulfport, Mississippi + 5 more
Conditions
Respiratory Failure
Interventions
Heated humidification, Cool bland aerosol
Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Mild Traumatic Brain Injury, Hyperbaric Oxygen Therapy, Depression
Interventions
Oxygen 100 % Gas for Inhalation, Hyperbaric Oxygen Therapy Chamber
Drug · Device
Lead sponsor
Nova Southeastern University
Other
Eligibility
18 Years to 70 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Conditions
Complex Regional Pain Syndrome
Interventions
Nitrous Oxide, Oxygen
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Cleveland, Ohio
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Metabolic and Hemodynamic Reserve in Pediatric SCA

NCT04406818
Conditions
Child, Only, Brain Diseases, Sickle Cell Disease, Anemia, Sickle Cell
Interventions
Carbon Dioxide
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
4 Years to 21 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Terminated Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Filter During CPET on WOB and Aerosol Particle Concentrations

NCT04526925
Conditions
Transmission, Patient-Professional
Interventions
Respiratory filter in-line placed with the standard mouthpiece, Standard mouthpiece
Device · Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Bronchopulmonary Dysplasia
Interventions
Inhaled Nitric Oxide (iNO), Nitrogen (placebo)
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
Up to 72 Hours
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
6
States / cities
Birmingham, Alabama • San Diego, California • Aurora, Colorado + 3 more
Completed Not applicable Interventional Accepts healthy volunteers

Intermittent Hypoxia and Balance Control

NCT05463042
Conditions
Intermittent Hypoxia, Normoxia
Interventions
Intermittent Hypoxia, Normoxia (sham)
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 80 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Austin, Texas
Conditions
Obesity, Intra-Abdominal Hypertension
Interventions
Respiratory mechanics assessment
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Ischemia-Reperfusion Injury
Interventions
nitric oxide for inhalation, Placebo
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
1
States / cities
Durham, North Carolina
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Carbon Monoxide Breathing on Blood Vessel Function

NCT03067701
Conditions
Endothelial Dysfunction
Interventions
Carbon Monoxide
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 39 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California