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Showing 1–24 of 42 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Inspired oxygen (40%) Clear all
Completed Phase 1Phase 2 Interventional Results available

Safety and Tolerability of Inhaled Nitric Oxide in Patients With Cystic Fibrosis

NCT00570349
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Nitric Oxide for Inhalation, Nitrogen
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
12 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 12, 2019 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Not applicable Interventional

Hyperoxia on Ventilation During Recovery From General Anesthesia

NCT05922020
View directory record Official record
Conditions
Ventilatory Depression, Postoperative Respiratory Failure
Interventions
Oxygen gas
Other
Lead sponsor
Stanford University
Other
Eligibility
20 Years to 90 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2024 · Synced Sep 26, 2026, 5:34 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

The Synergistic Effects of AIH and FES in Persons With MS

NCT06413602
View directory record Official record
Conditions
Multiple Sclerosis, Multiple Sclerosis, Relapsing-Remitting, Multiple Sclerosis, Secondary Progressive
Interventions
Acute Intermittent Hypoxia, Neuromuscular Electrical Stimulation
Other
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 1 Interventional

Treatment of U.S. Veterans With Mild Traumatic Brain Injury With Hyperbaric Oxygen Therapy

NCT06665633
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Aug 25, 2025 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Early Phase 1 Interventional

Dynamic Assessment of Right Ventricular Function With Inhaled Nitric Oxide During Cardiac MRI

NCT02220023
View directory record Official record
Conditions
Pulmonary Vascular Disorder
Interventions
INOmax Inhalation
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 12, 2017 · Synced Sep 26, 2026, 5:34 PM EDT
Completed No phase listed Observational

Prematurity-Related Ventilatory Control

NCT03464396
View directory record Official record
Conditions
Respiratory Control in Premature Infants
Interventions
Bedside Physiology study, Carotid Body Function Test, Room Air Challenge, Hypoxia Challenge Test, Effects of Nasal Cannula Flow, Magnetic Resonance Imaging, Echocardiogram, Blood Sample
Other · Diagnostic Test
Lead sponsor
Washington University School of Medicine
Other
Eligibility
1 Day to 28 Days
Enrollment
177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 30, 2023 · Synced Sep 26, 2026, 5:34 PM EDT
Active, not recruiting Phase 2 Interventional

I-SPY COVID-19 TRIAL: An Adaptive Platform Trial for Critically Ill Patients

NCT04488081
View directory record Official record
Conditions
COVID-19
Interventions
Remdesivir, Imatinib Mesylate, Dexamethasone, Cenicriviroc, Icatibant, Apremilast, dornase alfa, Celecoxib, Famotidine, IC14, Aviptadil, narsoplimab, Cyproheptadine, Cyclosporine
Drug · Biological
Lead sponsor
QuantumLeap Healthcare Collaborative
Other
Eligibility
18 Years and older
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
36
States / cities
Birmingham, Alabama • Davis, California • Irvine, California + 30 more
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Carbon Monoxide Breathing on Blood Vessel Function

NCT03067701
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Mar 31, 2019 · Synced Sep 26, 2026, 5:34 PM EDT
Withdrawn Early Phase 1 Interventional

S-Nitrosylation Therapy of COVID-19

NCT04528771
View directory record Official record
Conditions
SARS-CoV2 Infection, Covid19
Interventions
SNO, Nitrogen gas
Drug
Lead sponsor
James Reynolds
Other
Eligibility
18 Years to 89 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 6, 2025 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Role of Instructions in Nitrous Oxide Effects and Choice - 10

NCT00000258
View directory record Official record
Conditions
Opioid-Related Disorders, Substance-Related Disorders
Interventions
Nitrous oxide 10% & placebo, Nitrous oxide 20% & placebo, Nitrous oxide 30% & placebo, Nitrous oxide 40% and placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
21 Years to 32 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 1997
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 27, 2015 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Not applicable Interventional

Brief Cognitive Behavioral Therapy for Anxiety

NCT03820973
View directory record Official record
Conditions
Anxiety
Interventions
Brief CBT for Anxiety
Behavioral
Lead sponsor
Michael E. DeBakey VA Medical Center
Federal
Eligibility
18 Years to 99 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 21, 2022 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 2 Interventional

Hyperbaric Oxygen for Traumatic and Non-traumatic Brain Injury

NCT01986205
View directory record Official record
Conditions
Brain Injury, Chronic
Interventions
Hyperbaric Oxygen, Minimal pressure air
Combination Product
Lead sponsor
Lindell Weaver
Other
Eligibility
18 Years to 70 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
2
States / cities
Murray, Utah • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 3, 2022 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 2 Interventional

Hyperbaric Oxygen Effects on Persistent Post-concussive Symptoms

NCT05173818
View directory record Official record
Conditions
Persistent Post-concussive Syndrome, Concussion Post Syndrome
Interventions
Hyperbaric oxygen at 1.5 ATA, Sham treatment
Drug
Lead sponsor
Essentia Health
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Dec 23, 2025 · Synced Sep 26, 2026, 5:34 PM EDT
Completed No phase listed Observational

Validation of a Novel Oxygen Consumption Measurement Technique in Neonates

NCT03154112
View directory record Official record
Conditions
Neonatal Respiratory Failure, Congenital Heart Defect
Interventions
Measurement of oxygen consumption and caloric expenditure
Device
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Up to 12 Months
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 11, 2020 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 2 Interventional Results available

Hyperbaric Oxygen Therapy (HBO2) for Persistent Post-concussive Symptoms After Mild Traumatic Brain Injury (mTBI)

NCT01306968
View directory record Official record
Conditions
Post-concussive Symptoms, Traumatic Brain Injury
Interventions
hyperbaric oxygen, sham hyperbaric air
Drug · Other
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
5
States / cities
Camp Pendleton, California • Fort Carson, Colorado • Fort Gordon, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2014 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Nitrous Oxide Treatment for Tinnitus

NCT03365011
View directory record Official record
Conditions
Tinnitus
Interventions
Nitrous oxide gas for inhalation, Placebo gas for inhalation
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 13, 2018 · Synced Sep 26, 2026, 5:34 PM EDT
Recruiting Phase 2 Interventional

Long-Term Outcomes Following HBOT

NCT07732374
View directory record Official record
Conditions
Traumatic Brain Injury, Post-Concussive Symptoms, Post-Traumatic Stress Disorder
Interventions
Hyperbaric Oxygen Therapy (HBOT)
Drug
Lead sponsor
Summit Hyperbarics and Wellness
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boise, Idaho
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 2 Interventional Results available

Nitric Oxide Inhalation to Treat Sickle Cell Pain Crises

NCT00094887
View directory record Official record
Conditions
Anemia, Sickle Cell
Interventions
Nitric Oxide, Placebo
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
10 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
11
States / cities
Birmingham, Alabama • Oakland, California • Aurora, Colorado + 7 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Mask Study: One-handed vs. Two Handed Technique in Children

NCT03215121
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
One handed mask airway, switch to two hands, Two handed mask airway + jaw thrust, Two handed mask airway, switch to one hand
Procedure
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
1 Year to 8 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated Jan 22, 2020 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 2 Interventional

Hyperbaric Oxygen Therapy (HBO2T) for Post-Concussive Symptoms (PSC) After Mild Traumatic Brain Injury (mTBI)

NCT01220713
View directory record Official record
Conditions
Mild Traumatic Brain Injury, Post-Concussive Syndrome
Interventions
Hyperbaric Oxygen Therapy
Procedure
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
19 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
3
States / cities
Portsmouth, Virginia • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 26, 2013 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Pre-oxygenation With Real Time End-tidal Oxygen Measurements Versus Single Breath Measurements

NCT03840486
View directory record Official record
Conditions
Rapid Sequence Intubation
Interventions
Non-rebreather mask (NRBM), Non-invasive ventilator mask (NIV), Nasal cannula EtO2 sensor, Oxygen (NRBM), Oxygen (NIV)
Device · Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 12, 2025 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 2 Interventional Results available

The Effects of Nitric Oxide for Inhalation During Left Ventricular Assists Device (LVAD) Implantation

NCT00060840
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Nitric Oxide, Nitrogen
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
8
States / cities
Newark, New Jersey • Durham, North Carolina • Cincinnati, Ohio + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2016 · Synced Sep 26, 2026, 5:34 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Treatment of Orthostatic Intolerance

NCT00262470
View directory record Official record
Conditions
Tachycardia, Chronic Orthostatic Intolerance
Interventions
Acetazolamide, Atomoxetine, NO Drug, Clonidine, Entacapone, Entacapone & Propranolol, Atomoxetine & Propranolol, Indomethacin, Mecamylamine, Isosorbide Dinitrate, Melatonin, Midodrine, Modafinil, Octreotide, Placebo, Propranolol, Modafinil & Propranolol, Sertraline, IV Saline, Drinking Water, Breathing Device, memantine, Abdominal binder
Drug · Other · Dietary Supplement + 3 more
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Sep 26, 2026, 5:34 PM EDT
Completed Phase 2 Interventional Results available

mTBI Mechanisms of Action of HBO2 for Persistent Post-Concussive Symptoms

NCT01611194
View directory record Official record
Conditions
Traumatic Brain Injury With Brief Loss of Consciousness, Post-Concussion Syndrome
Interventions
Hyperbaric oxygen (HBO2) at 1.5 atms, Sham control 1.2 atms
Drug
Lead sponsor
U.S. Army Medical Research and Development Command
Federal
Eligibility
18 Years to 65 Years
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
5
States / cities
Colorado Springs, Colorado • Fort Carson, Colorado • Jacksonville, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2018 · Synced Sep 26, 2026, 5:34 PM EDT