Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
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 come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 30, 2026, 4:28 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 61 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Hypercapnia Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Hypercapnia: Cognitive Effects and Monitoring

NCT01782625
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 25, 2016 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Clinical Study to Investigate the Effect of the Combination of Psychotropic Drugs and an Opioid on Ventilation

NCT04310579
View directory record Official record
Conditions
Hypercapnia, Ventilatory Depression
Interventions
Oxycodone and Midazolam, Oxycodone, Paroxetine, and Quetiapine
Drug
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 50 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pulse Oximeter and Respiratory Rate Test

NCT03797300
View directory record Official record
Conditions
Hypoxia, Hypercapnia, Hypocapnia
Interventions
Spry Loop Band
Device
Lead sponsor
Spry Health
Industry
Eligibility
18 Years to 60 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 9, 2019 · Synced Oct 30, 2026, 4:28 PM EDT
Recruiting Not applicable Interventional

Effect of Hypercapnia Treatment on Respiratory Recovery After Spinal Cord Injury

NCT05536076
View directory record Official record
Conditions
Sleep Apnea, SCI/D, Hypercapnia
Interventions
Hypercapnia treatment
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 89 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Oct 30, 2026, 4:28 PM EDT
Completed No phase listed Observational

Trancutaneous Monitoring to Avoid Hypercapnea During Complex Catheter Ablations

NCT01815034
View directory record Official record
Conditions
Hypercapnia
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
Not listed
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 19, 2014 · Synced Oct 30, 2026, 4:28 PM EDT
Terminated Not applicable Interventional Results available

The Use of High Frequency Oscillations With NIV in Hypercapnic COPD Participants

NCT02680639
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
BiPAP Synchrony ventilator
Device
Lead sponsor
Philips Respironics
Industry
Eligibility
21 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 6, 2019 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Phase 3 Interventional

The Effects of Hypercapnia, Supplemental Oxygen, and Dexamethasone on Surgical Wound Infection

NCT00273377
View directory record Official record
Conditions
Surgical Wound Infection, Surgery, Colon
Interventions
Mild intraoperative hypercapnia (50 mmHg vs. 30 mmHg), Supplemental oxygen (80% vs. 30%), Dexamethasone, Placebo
Other · Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
2
States / cities
Louisville, Kentucky • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 29, 2016 · Synced Oct 30, 2026, 4:28 PM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Impact of NOS, COX, and ROS Inhibition on Cerebral Blood Flow Regulation

NCT03066115
View directory record Official record
Conditions
Hypoxia, Hypercapnia
Interventions
L-NMMA, Ketorolac, Ascorbic Acid, Intravenous Catheter, Transcranial Doppler Ultrasound
Drug · Procedure
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 10, 2019 · Synced Oct 30, 2026, 4:28 PM EDT
Completed No phase listed Observational

MR Perfusion Imaging and Hypercapnia (Increased Carbon Dioxide) to Study New Blood Vessel Formation in Multiple Sclerosis

NCT00064909
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Not applicable Interventional Results available

Quantitative End Tidal CO2 Monitoring in the Delivery Room (DR)

NCT01381068
View directory record Official record
Conditions
Delivery Room Resuscitation
Interventions
End tidal CO2 monitor
Device
Lead sponsor
Neil Finer
Other
Eligibility
Up to 15 Minutes
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Single Dose Crossover Study to Compare the Respiratory Drive After Administration of Belbuca, Oxycodone and Placebo.

NCT03996694
View directory record Official record
Conditions
Respiratory Depression
Interventions
Belbuca 300 µg, Belbuca 600 µg, Belbuca 900 µg, Oxycodone 30 mg, Oxycodone 60 mg, Placebo
Drug
Lead sponsor
BioDelivery Sciences International
Industry
Eligibility
18 Years to 55 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 5, 2021 · Synced Oct 30, 2026, 4:28 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Timing of Opioid Administration and Postoperative Respiratory Depression.

NCT07227389
View directory record Official record
Conditions
Respiratory Complications, Opioid Induced Respiratory Depression, Postoperative Respiratory Complications
Interventions
Respiratory volume monitoring
Diagnostic Test
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 85 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetics and Pharmacodynamics of TRV130, Morphine, and Placebo in Healthy Subjects

NCT02083315
View directory record Official record
Conditions
Pain, Acute
Interventions
TRV130 1.5 mg, TRV130 3 mg, TRV130 4.5 mg, Morphine 10 mg, Placebo
Drug
Lead sponsor
Trevena Inc.
Industry
Eligibility
18 Years to 50 Years · Male only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 11, 2014 · Synced Oct 30, 2026, 4:28 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

The Effect of Respiratory Challenge on the BOLD Signal

NCT04258774
View directory record Official record
Conditions
Hypoxia, Brain, Hyperoxia, Hypercapnia, Hypocapnia
Interventions
Carbon Dioxide
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Not applicable Interventional

Prematurity Related Ventilatory Control (PRE-VENT) - Specific Aim 2

NCT03333161
View directory record Official record
Conditions
Infant,Premature
Interventions
Cardiorespiratory monitoring
Diagnostic Test
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
1 Day to 15 Days
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 21, 2021 · Synced Oct 30, 2026, 4:28 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Developing New Ways to Detect Respiratory Impairment Early in ALS

NCT07844590
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis (ALS)
Interventions
Not listed
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influence of Graded Hypercapnia on Endurance Exercise Performance

NCT05116397
View directory record Official record
Conditions
Hypercapnia
Interventions
Inspired gas
Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 45 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 31, 2022 · Synced Oct 30, 2026, 4:28 PM EDT
Terminated Not applicable Interventional

DAMP-Mediated Innate Immune Failure and Pneumonia After Trauma - the Harvard-Longwood (HALO) Campus Area Consortium

NCT03993002
View directory record Official record
Conditions
Respiratory Failure
Interventions
Normoxia with Normocarbia, Normoxia with Hypercarbia, Hyperoxia with Normocarbia, Hyperoxia with Hypercarbia
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 18, 2022 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

End Tidal CO2 and Masks: Is There a Correlation?

NCT06437301
View directory record Official record
Conditions
Hypercapnia
Interventions
Baseline measure of ETCO2 without mask, Baseline ETCO2 with mask, ETCO2 after 200 meter walk with mask, ETCO2 after 200 meter walk without mask
Other
Lead sponsor
CHRISTUS Health
Other
Eligibility
18 Years to 75 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Corpus Christi, Texas
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Not applicable Interventional

Mechanical Power-Guided Lung Protective Ventilation (VentCoach) in Acute Hypoxemic and/or Hypercapnic Respiratory Failure

NCT07294768
View directory record Official record
Conditions
Mechanical Ventilation
Interventions
VentCoach, Standard of Care
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 30, 2026, 4:28 PM EDT
Terminated Not applicable Interventional

Telemedicine for Improving Outcome in Inner City Patient Population With Hypercapneic Respiratory Failure

NCT03353064
View directory record Official record
Conditions
Hypercapnic Respiratory Failure, Chronic Obstructive Pulmonary Disease, Obesity Hypoventilation Syndrome, Sleep Disordered Breathing, Neuromuscular Diseases
Interventions
Vivify, EMS
Other
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 29, 2018 · Synced Oct 30, 2026, 4:28 PM EDT
Terminated Not applicable Interventional

Impact of Negative Pressure Ventilation in Patients Hospitalized With Acute Hypercapnic Respiratory Failure

NCT06108284
View directory record Official record
Conditions
Acute Hypercapnic Respiratory Failure
Interventions
Intervention Arm (Biphasic cuirass ventilation)
Device
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 90 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 13, 2026 · Synced Oct 30, 2026, 4:28 PM EDT
Completed Not applicable Interventional

Use of Combined Prone Positioning and High-Flow Nasal Cannula, and Non-invasive Positive Pressure Ventilation to Prevent Intubation in COVID-19 Infection

NCT04694638
View directory record Official record
Conditions
Prone Positioning, Covid19, Hypoxemic Respiratory Failure, ARDS, Non Invasive Ventilation, High Flow Nasal Cannulla
Interventions
Body position change
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 110 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 5, 2023 · Synced Oct 30, 2026, 4:28 PM EDT
Withdrawn No phase listed Observational

Hypercapnia and Its Association With Long-term Respiratory Morbidities in Premature Infants With Chronic Lung Disease

NCT02996162
View directory record Official record
Conditions
Bronchopulmonary Dysplasia
Interventions
Massimo Root Monitoring System, ISA-Infrared Sidestream Gas Analyzer
Device
Lead sponsor
Boston Children's Hospital
Other
Eligibility
3 Days to 1 Year
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 2, 2021 · Synced Oct 30, 2026, 4:28 PM EDT