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Showing 1–24 of 74 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Nitrogen Gas for Inhalation Clear all
Completed Phase 2Phase 3 Interventional Results available

Study to Evaluate if Inhaled Nitric Oxide Improves Liver Function After Transplantation

NCT00582010
View directory record Official record
Conditions
Reperfusion Injury, Liver Injury
Interventions
inhaled nitric oxide, nitrogen gas
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 80 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
2
States / cities
Birmingham, Alabama • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 5, 2014 · Synced Sep 7, 2026, 6:30 AM EDT
Withdrawn Phase 2 Interventional

Effects of Nitric Oxide on the Endothelium During Hemolysis.

NCT03748082
View directory record Official record
Conditions
Endothelial Dysfunction, Hemolysis Intravascular, Cardiovascular Diseases, Cardiovascular Risk Factor
Interventions
Nitric Oxide, Reactive Hyperemia Index, Endothelial Cells Collection
Drug · Diagnostic Test · Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Sep 7, 2026, 6:30 AM EDT
Not listed Phase 1Phase 2 Interventional

Prevention of Transfusion Related Acute Gut Injury (TRAGI) in Extremely Low Gestational Age Neonates (ELGANs) Using iNO

NCT02851472
View directory record Official record
Conditions
Anemia
Interventions
Inhaled Nitric Oxide, Placebo
Drug
Lead sponsor
New York Medical College
Other
Eligibility
2 Weeks and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
4
States / cities
Springfield, Massachusetts • Stony Brook, New York • Valhalla, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Sep 7, 2026, 6:30 AM EDT
Recruiting Phase 3 Interventional

Nitric Oxide for Reduced Intensive Support in Cardiac Surgery With Cardiopulmonary Bypass

NCT06702553
View directory record Official record
Conditions
Nitric Oxide, Cardiac Surgery, Cardiopulmonary Bypass, Adult Patients Undergoing Cardiovascular Surgery With Cardiopulmonary Bypass
Interventions
Nitric Oxide Gas, Standard Care Arm
Drug
Lead sponsor
Xijing Hospital
Other
Eligibility
18 Years and older
Enrollment
3,650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Sep 7, 2026, 6:30 AM EDT
Terminated Not applicable Interventional

Hyperbaric Oxygen for Wagner II Diabetic Lower Extremity Ulcers

NCT01954901
View directory record Official record
Conditions
Wagner Grade 2 Lower Extremity Ulcers
Interventions
Hyperbaric oxygen therapy, Hyperbaric room air
Device
Lead sponsor
David Grant U.S. Air Force Medical Center
Federal
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Travis Air Force Base, California
Source: ClinicalTrials.gov public record
Updated Apr 16, 2020 · Synced Sep 7, 2026, 6:30 AM EDT
Withdrawn Phase 2 Interventional

Use of Inhaled Nitric Oxide to Prevent Pulmonary Hypertension Associated to Stored Blood Transfusion

NCT02217683
View directory record Official record
Conditions
Hypertension, Pulmonary, Hemolysis
Interventions
Nitric Oxide
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 17, 2016 · Synced Sep 7, 2026, 6:30 AM EDT
Terminated Not applicable Interventional

Functional Magnetic Resonance Imaging (fMRI) Vascular Reactivity in Cerebral Cavernous Malformations (CCM)

NCT05298709
View directory record Official record
Conditions
Cerebral Cavernous Malformation
Interventions
Hyperventilation and CO2 challenge
Other
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Jun 10, 2025 · Synced Sep 7, 2026, 6:30 AM EDT
Completed Phase 2 Interventional

Nitric Oxide Inhalation Therapy to Relieve Chest Pain in Patients With Coronary Artery Disease

NCT00014040
View directory record Official record
Conditions
Coronary Disease, Myocardial Ischemia
Interventions
Nitric Oxide and INOpulse Delivery System
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 7, 2026, 6:30 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Nitric Oxide Administration During Pediatric Cardiopulmonary Bypass Surgery to Prevent Platelet Activation

NCT03455218
View directory record Official record
Conditions
Inflammation, Platelet Dysfunction
Interventions
Nitric Oxide, Placebo, INOmax
Drug · Device
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
Up to 1 Year
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 12, 2020 · Synced Sep 7, 2026, 6:30 AM EDT
Completed Phase 2 Interventional Results available

Examining the Use of Non-Invasive Inhaled Nitric Oxide to Reduce Chronic Lung Disease in Premature Newborns

NCT00955487
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Sep 7, 2026, 6:30 AM EDT
Terminated Phase 2 Interventional

Efficacy and Safety of Inhaled Nitric Oxide (NO) in Cystic Fibrosis (CF) Patients

NCT02498535
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Nitric Oxide 160 ppm
Drug
Lead sponsor
Novoteris, LLC
Industry
Eligibility
18 Years and older
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
6
States / cities
Garden Grove, California • Los Angeles, California • Columbus, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2021 · Synced Sep 7, 2026, 6:30 AM EDT
Terminated Early Phase 1 Interventional

19F MRI of Ventilation in Subjects With Cystic Fibrosis Undergoing Treatment for Pulmonary Exacerbation

NCT03497117
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Lung Clearance Index, MRI with PFP
Device · Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 99 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Sep 7, 2026, 6:30 AM EDT
Terminated Phase 3 Interventional

Inhaled Nitric Oxide in Prevention/Treatment of Ischemia-Reperfusion Lung Injury Related to Lung Transplantation

NCT00060450
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 8, 2016 · Synced Sep 7, 2026, 6:30 AM EDT
Withdrawn Phase 2 Interventional

Effects of Prolonged Delivery of Nitric Oxide Gas on Plasma Reduction-Oxidation Reactions in Cardiac Surgical Patients

NCT04022161
View directory record Official record
Conditions
Cardiovascular Diseases, Oxidative Stress, Endothelial Dysfunction
Interventions
Nitrogen Gas for Inhalation, Blood withdrawal, Nitric Oxide
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Sep 7, 2026, 6:30 AM EDT
Terminated Early Phase 1 Interventional Results available

Nitrous TRD Bipolar Depression

NCT02757521
View directory record Official record
Conditions
Treatment- Resistant Bipolar Disorder, Bipolar Disorder, Bipolar Depressive Disorder
Interventions
Nitrous Oxide, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 4, 2019 · Synced Sep 7, 2026, 6:30 AM 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 7, 2026, 6:30 AM EDT
Withdrawn Phase 2 Interventional

Safety and Tolerability Study of Inhaled Carbon Monoxide in Kidney Transplant Patients

NCT00531856
View directory record Official record
Conditions
Kidney Transplantation
Interventions
Inhaled Carbon Monoxide
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
3
States / cities
San Francisco, California • Chicago, Illinois • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Sep 7, 2026, 6:30 AM EDT
Active, not recruiting Early Phase 1 Interventional

Xenon Inhalation Therapy for Major Depressive Disorder and Bipolar Disorder

NCT03748446
View directory record Official record
Conditions
Major Depressive Disorder, Bipolar Depression
Interventions
Xenon, Nitrogen gas
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 7, 2026, 6:30 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Nitrous Oxide (N2O) on Intraocular Pressure in Healthy Volunteers

NCT00967694
View directory record Official record
Conditions
Glaucoma, Sedation
Interventions
Nitrous oxide
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 22, 2014 · Synced Sep 7, 2026, 6:30 AM EDT
Completed Phase 4 Interventional Results available

Dexmedetomidine and Propofol for Pediatric MRI Sedation

NCT03513757
View directory record Official record
Conditions
Headache, Tumor, Seizure Disorder, Neurofibromatoses, Hydrocephalus, Abdominal Neoplasm, Spine Deformity
Interventions
propofol, Dexmedetomidine, Glycopyrrolate, Lidocaine 1% Injectable Solution, Nitrous Oxide, Sevoflurane
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
12 Months to 60 Months
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 20, 2020 · Synced Sep 7, 2026, 6:30 AM EDT
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Functional Applications of Hyperpolarized 129Xe MRI

NCT01697332
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Hyperpolarized 129Xe gas
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
20 Years to 75 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 16, 2018 · Synced Sep 7, 2026, 6:30 AM EDT
Completed Phase 2 Interventional Results available

Inhaled Nitrous Oxide for Treatment-Resistant Depression: Optimizing Dosing Strategies

NCT03283670
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 3, 2022 · Synced Sep 7, 2026, 6:30 AM EDT
Not listed Phase 4 Interventional

Nitrous Oxide Prior to Intranasal Midazolam for Moderate Dental Sedation in Pediatric Patients

NCT04083105
View directory record Official record
Conditions
Dental Anxiety, Pain
Interventions
Nitrous Oxide, Midazolam
Drug
Lead sponsor
Children's Hospital Colorado
Other
Eligibility
3 Years to 8 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 9, 2019 · Synced Sep 7, 2026, 6:30 AM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Diffuse Optical Monitoring With Inhaled Nitric Oxide

NCT03023449
View directory record Official record
Conditions
Stroke
Interventions
Nitric Oxide
Drug
Lead sponsor
Steven Messe
Other
Eligibility
18 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 23, 2025 · Synced Sep 7, 2026, 6:30 AM EDT