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ClinicalTrials.gov public records Last synced Oct 22, 2026, 10:49 PM EDT

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 4,017 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Breathing Clear all
Completed No phase listed Observational Results available

Effect of Alveolar Minute Ventilation on Respiratory Gas Heat Content

NCT01943227
View directory record Official record
Conditions
Ventilation Perfusion Mismatch
Interventions
controlled positive pressure ventilation 9ml/kg tidal volume, controlled positive pressure ventilation 6ml/kg tidal volume
Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Oct 28, 2019 · Synced Oct 22, 2026, 10:49 PM EDT
Not listed Not applicable Interventional

ROX Index for the Timing of Intubation in Nasal High Flow

NCT04707729
View directory record Official record
Conditions
Acute Hypoxemic Respiratory Failure
Interventions
ROX index algorithm
Diagnostic Test
Lead sponsor
Hospital Universitari Vall d'Hebron Research Institute
Other
Eligibility
18 Years to 120 Years
Enrollment
630 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 15, 2024 · Synced Oct 22, 2026, 10:49 PM EDT
Terminated Not applicable Interventional

Assessment of Sleep Apnea and Its Causes Before and After Weight Loss Surgery

NCT01712269
View directory record Official record
Conditions
Sleep Apnea, Obstructive
Interventions
Weight-loss (bariatric) surgery
Procedure
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 3, 2017 · Synced Oct 22, 2026, 10:49 PM EDT
Terminated Phase 3 Interventional Results available

A Study of Lebrikizumab in Adolescent Participants With Uncontrolled Asthma Who Are on Inhaled Corticosteroids and a Second Controller Medication

NCT01875003
View directory record Official record
Conditions
Asthma
Interventions
Lebrikizumab, Placebo, Standard of Care
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
12 Years to 17 Years
Enrollment
346 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
16
States / cities
Mission Viejo, California • Stockton, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Oct 22, 2026, 10:49 PM EDT
Terminated Not applicable Interventional

Randomized Controlled Trial of Surfactant Administration by Laryngeal Mask Airway (LMA)

NCT00599651
View directory record Official record
Conditions
Respiratory Distress Syndrome, Newborn
Interventions
Surfactant administered via Laryngeal Mask Airway (LMA), standard of care (nasal CPAP and supplemental oxygen)
Device · Other
Lead sponsor
University of Virginia
Other
Eligibility
Up to 72 Hours
Enrollment
380 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 7, 2010 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Phase 2 Interventional Results available

Comparison of Therapeutic Regimens for Scleroderma Interstitial Lung Disease (The Scleroderma Lung Study II)

NCT00883129
View directory record Official record
Conditions
Scleroderma, Interstitial Lung Disease
Interventions
Mycophenolate mofetil, Cyclophosphamide, Placebo
Drug
Lead sponsor
Michael Roth
Other
Eligibility
18 Years and older
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
14
States / cities
Los Angeles, California • San Francisco, California • Denver, Colorado + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 10, 2017 · Synced Oct 22, 2026, 10:49 PM EDT
Recruiting Not applicable Interventional

Echography-guided Surfactant THERapy (ESTHER) For Preterm Infants With Respiratory Failure

NCT06446453
View directory record Official record
Conditions
Respiratory Distress Syndrome, Newborn, Pulmonary Surfactants, Intensive Care Units, Neonatal
Interventions
Echography-guided Surfactant THERapy (ESTHER)
Diagnostic Test
Lead sponsor
Connecticut Children's Medical Center
Other
Eligibility
0 Hours to 2 Hours
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Oct 22, 2026, 10:49 PM EDT
Recruiting Not applicable Interventional

Behavioral Economic & Staffing Strategies in the ICU

NCT06184945
View directory record Official record
Conditions
Implementation Science, Delirium, Critical Illness, Mechanical Ventilation Complication, ICU Acquired Weakness, Pain
Interventions
Realtime audit and feedback, RN Implementation Facilitator
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
16,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
3
States / cities
Iowa City, Iowa • Omaha, Nebraska • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Impact of Exogenous Ketones on Breathing in Healthy Volunteers

NCT07220122
View directory record Official record
Conditions
Healthy Volunteer
Interventions
1,3 butanediol, Placebo
Dietary Supplement
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Not applicable Interventional Results available

Pediatric Nasal Mask Usability Study

NCT01154322
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Pixi pediatric mask
Device
Lead sponsor
ResMed
Industry
Eligibility
2 Years to 7 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
3
States / cities
Redwood City, California • Aurora, Colorado • Wallingford, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 24, 2013 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Phase 3 Interventional Results available

Tiotropium / Respimat One-Year Study

NCT00168831
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Tiotropium Inhalation Solution, Placebo
Drug · Other
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
40 Years and older
Enrollment
1,007 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
12
States / cities
Birmingham, Alabama • La Jolla, California • Long Beach, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 20, 2014 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Phase 2 Interventional

Combined Upper-airway and Breathing Control Therapies for Obstructive Sleep Apnea

NCT03189173
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Oral appliance, Oxygen, Oral appliance plus oxygen, No treatment
Device · Drug · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years to 79 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 4, 2025 · Synced Oct 22, 2026, 10:49 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers

A Clinical Trial Assessing the Impact of Inhaled Insulin on Glucose Disposition

NCT00287066
View directory record Official record
Conditions
Diabetes Mellitus
Interventions
Inhaled Human Insulin, Regular Human Insulin
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 50 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 21, 2008 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Not applicable Interventional

Treatment Study of Soft Palatal Implants in Obstructive Sleep Apnea

NCT00263770
View directory record Official record
Conditions
Sleep Apnea, Obstructive
Interventions
soft palate implant, Positive airway pressure (PAP)
Device · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 20, 2011 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of PEEP on TRJV in Mechanically Intubated Pediatric Patients

NCT06229886
View directory record Official record
Conditions
Tricuspid Regurgitation, Mechanical Ventilation Pressure High, Pediatric Respiratory Diseases
Interventions
Application of positive-end-expiratory pressure
Other
Lead sponsor
Northwell Health
Other
Eligibility
3 Months to 18 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated Sep 26, 2024 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Phase 2 Interventional Results available

Mesenchymal Stromal Cells For Acute Respiratory Distress Syndrome

NCT03818854
View directory record Official record
Conditions
Respiratory Distress Syndrome, Adult
Interventions
Human Mesenchymal Stromal Cells, Cell Reconstitution Media
Biological
Lead sponsor
Michael A. Matthay
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
7
States / cities
Sacramento, California • San Francisco, California • Portland, Oregon + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Not applicable Interventional

SleepWell24: An Innovative Smartphone Application to Improve PAP Adherence

NCT03156283
View directory record Official record
Conditions
Obstructive Sleep Apnea of Adult
Interventions
SleepWell24 Application, Usual Care Plus Activity Monitor
Behavioral · Other
Lead sponsor
Arizona State University
Other
Eligibility
21 Years and older
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 16, 2019 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Phase 1 Interventional Results available

Nasal High Frequency Ventilation in Preterm Infants: A Pilot Study

NCT00296231
View directory record Official record
Conditions
Infant Respiratory Distress Syndrome, Respiratory Insufficiency, Apnea of Prematurity
Interventions
Nasal high frequency ventilation
Other
Lead sponsor
Tarah T Colaizy
Other
Eligibility
7 Days to 3 Months
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 9, 2018 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Phase 1 Interventional

A Study of Inhaled AZD8630 in Adolescents With Asthma

NCT07065331
View directory record Official record
Conditions
Asthma
Interventions
AZD8630, Dry powder inhaler
Drug · Device
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years to 17 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
9
States / cities
Bakersfield, California • Miami Lakes, Florida • Lafayette, Louisiana + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Oct 22, 2026, 10:49 PM EDT
Terminated Not applicable Interventional

Phase 2 Study of Ex-vivo Perfusion and Ventilation of Lungs to Assess Transplant Suitability

NCT01241942
View directory record Official record
Conditions
Emphysema, Chronic Obstructive Pulmonary Disease (COPD), Cystic Fibrosis, Pulmonary Fibrosis, Bronchiectasis, Sarcoidosis, Pulmonary Hypertension, Alpha-1 Antitrypsin Deficiency
Interventions
Steen Solution™, Conventional Lung Transplant
Device · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 13, 2018 · Synced Oct 22, 2026, 10:49 PM 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 4, 2022 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Not applicable Interventional Results available

Effect of High Rebound Mattress Toppers on Sleep and Sleep-Related Symptoms

NCT03055156
View directory record Official record
Conditions
Sleep Disorders
Interventions
Low rebound mattress toppers, High rebound mattress toppers
Device
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
558 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 6, 2020 · Synced Oct 22, 2026, 10:49 PM EDT
Withdrawn No phase listed Observational

Outcomes of Partial Versus Complete Tonsillectomy for Obstructive Sleep Disordered Breathing

NCT00519402
View directory record Official record
Conditions
Obstructive Sleep Disordered Breathing
Interventions
tonsillar examination and questionnaire completion
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
5 Years to 28 Years
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 13, 2017 · Synced Oct 22, 2026, 10:49 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Safety, Tolerability and Pharmacokinetics of Orally Inhaled Aerosolized Hydroxychloroquine Sulfate in Healthy Adult Volunteers

NCT04461353
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome Coronavirus 2
Interventions
Aerolized Hydroxychloroquine Sulfate, Placebo
Drug · Other
Lead sponsor
Pulmoquine Therapeutics, Inc
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 22, 2026, 10:49 PM EDT