- Conditions
- Hypoxia
- Interventions
- Mixtures of nitrogen, air, and carbon dioxide
- Combination Product
- Lead sponsor
- Gabi SmartCare
- Industry
- Eligibility
- 21 Years to 50 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023
- U.S. locations
- 1
- States / cities
- San Francisco, California
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 1–24
of 24
matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
- 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
- Conditions
- Chronic Obstructive Pulmonary Disease (COPD)
- Interventions
- Air cleaner, Sham air cleaner
- Device
- Lead sponsor
- JHSPH Center for Clinical Trials
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 770 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2029
- U.S. locations
- 11
- States / cities
- Birmingham, Alabama • Los Angeles, California • Iowa City, Iowa + 7 more
- Conditions
- Asthma in Children, Pollution; Exposure
- Interventions
- Cooking Ventilation Intervention
- Behavioral
- Lead sponsor
- University of California, Berkeley
- Other
- Eligibility
- 6 Years to 12 Years
- Enrollment
- 19 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2022
- U.S. locations
- 1
- States / cities
- Berkeley, California
- Conditions
- Air Pollution Exposure, Oxidative Stress, Airway Inflammation
- Interventions
- Antioxidant- and Nutrient-Rich Food-Based Nutrition Intervention
- Other
- Lead sponsor
- Georgia Southern University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2027
- U.S. locations
- 1
- States / cities
- Savannah, Georgia
- Conditions
- Stroke
- Interventions
- Inspired oxygen fraction / end tidal carbon dioxide
- Other
- Lead sponsor
- University of Michigan
- Other
- Eligibility
- 18 Years to 85 Years
- Enrollment
- 67 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2014
- U.S. locations
- 1
- States / cities
- Ann Arbor, Michigan
- Conditions
- Asthma
- Interventions
- NO2 Scrubber, HEPA filter, Control
- Other
- Lead sponsor
- Yale University
- Other
- Eligibility
- 5 Years to 11 Years
- Enrollment
- 116 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Obstructive Sleep Apnea
- Interventions
- Mild Intermittent Hypoxia, Sham MIH
- Other
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- 30 Years to 60 Years
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2027
- U.S. locations
- 1
- States / cities
- Detroit, Michigan
- Conditions
- Esophageal Adenocarcinoma
- Interventions
- Cryotherapy, Esophagogastroduodenoscopy (EGD), Endoscopic ultrasound (EUS)
- Procedure
- Lead sponsor
- Hunter Holmes Mcguire Veteran Affairs Medical Center
- Federal
- Eligibility
- 18 Years and older
- Enrollment
- 15 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2022
- U.S. locations
- 1
- States / cities
- St Louis, Missouri
- Conditions
- Indoor Air Quality
- Interventions
- Home Health Report
- Behavioral
- Lead sponsor
- Colorado State University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 250 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2026
- U.S. locations
- 2
- States / cities
- Aurora, Colorado • Fort Collins, Colorado
- Conditions
- Hypercapnia
- Interventions
- Graded hypercapnia, Caffeine, Placebo
- Other · Drug
- Lead sponsor
- United States Army Research Institute of Environmental Medicine
- Federal
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 29 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023 – 2024
- U.S. locations
- 1
- States / cities
- Natick, Massachusetts
- Conditions
- Fabry Disease
- Interventions
- Measures of arterial stiffness and endothelial function, Ambulatory blood pressure monitoring, Cardiopulmonary exercise testing (CPET), Serum and urine biomarkers
- Diagnostic Test
- Lead sponsor
- Children's Hospital Medical Center, Cincinnati
- Other
- Eligibility
- 8 Years and older
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2025
- U.S. locations
- 1
- States / cities
- Cincinnati, Ohio
- Conditions
- Epilepsy, SUDEP
- Interventions
- 6% Carbon dioxide/50% oxygen/balance nitrogen mixture
- Other
- Lead sponsor
- University of Iowa
- Other
- Eligibility
- 18 Years to 99 Years
- Enrollment
- 335 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2029
- U.S. locations
- 1
- States / cities
- Iowa City, Iowa
- Conditions
- Respiratory Depression
- Interventions
- Ozone, Nitrogen dioxide
- Other
- Lead sponsor
- Environmental Protection Agency (EPA)
- Federal
- Eligibility
- 18 Years to 40 Years
- Enrollment
- 54 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- Chapel Hill, North Carolina
- Conditions
- Healthy Subjects
- Interventions
- Inhaled Nitric Oxide
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023 – 2027
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Exercise-Induced Vocal Cord Dysfunction, Paradoxical Vocal Fold Motion, Vocal Cord Dysfunction
- Interventions
- Carbon Dioxide, Mechano-acoustic device
- Drug · Device
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 18 Years to 26 Years
- Enrollment
- 130 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2032
- U.S. locations
- 1
- States / cities
- Bloomington, Indiana
- Conditions
- Hypoxia
- Interventions
- Pulse Oximeter, Induced hypoxia through breathing nitrogen-air-carbon dioxide mixture
- Device · Procedure
- Lead sponsor
- Nihon Kohden
- Industry
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 48 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2027
- U.S. locations
- 1
- States / cities
- San Francisco, California
- Conditions
- Fibromyalgia, Central Neuropathic Pain
- Interventions
- Nitrous oxide gas for inhalation, Placebo
- Drug
- Lead sponsor
- University of Chicago
- Other
- Eligibility
- 18 Years to 75 Years
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021 – 2026
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Pulmonary Disease
- Interventions
- Spray cryotherapy, Ballon Dilation, Radial Incision
- Device
- Lead sponsor
- Vanderbilt University Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2027
- U.S. locations
- 3
- States / cities
- Jackson, Mississippi • Nashville, Tennessee • Richmond, Virginia
- Conditions
- Traumatic Brain Injury, Aging Disorder, Magnetic Resonance Imaging (MRI)
- Interventions
- Hypercapnia task performed during fMRI
- Other
- Lead sponsor
- Andrew Mayer
- Other
- Eligibility
- 18 Years to 82 Years
- Enrollment
- 200 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2032
- U.S. locations
- 1
- States / cities
- Albuquerque, New Mexico
- Conditions
- Hypercapnia, Exercise, Nitrogen Narcosis, Diving, Immersion
- Interventions
- NO exercise at depth, exercise at depth
- Other
- Lead sponsor
- Duke University
- Other
- Eligibility
- 18 Years to 50 Years · Male only
- Enrollment
- 58 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2016
- U.S. locations
- 1
- States / cities
- Durham, North Carolina
- Conditions
- Major Depressive Disorder, Treatment Resistant Depression
- Interventions
- Nitrous oxide gas for inhalation, Placebo
- Drug
- Lead sponsor
- University of Chicago
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021 – 2026
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Stenosis Trachea
- Interventions
- The truFreeze Spray Cryotherapy, Ballon dilation, Radial Incision
- Device
- Lead sponsor
- Virginia Commonwealth University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2026
- U.S. locations
- 1
- States / cities
- Richmond, Virginia
- Conditions
- Suicidal Ideation, Major Depressive Disorder, Treatment Resistant Depression
- Interventions
- Nitrous oxide gas for inhalation, Placebo
- Drug
- Lead sponsor
- University of Chicago
- Other
- Eligibility
- 18 Years to 65 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026
- U.S. locations
- 1
- States / cities
- Chicago, Illinois