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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hypercapnia Clear all
Recruiting Not applicable Interventional

The Effects of Music Therapy on Adult Patients Requiring Mechanical Ventilation in the ICU

NCT03642002
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Acute Hypoxemic Respiratory Failure, Acute Hypercapnic Respiratory Failure
Interventions
Toning, Ocean drum & SOK melody, SOK, Process, Holding Harmonic Container
Other · Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
3
States / cities
New York, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 8, 2025 · Synced Jul 22, 2026, 7:16 PM EDT
Completed No phase listed Observational

Permissive Hypercapnia and Brain Development in Premature Infants

NCT01361360
View directory record Official record
Conditions
Premature Birth
Interventions
Not listed
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
3 Months to 5 Months
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jul 24, 2017 · Synced Jul 22, 2026, 7:16 PM EDT
Terminated Phase 1 Interventional

Cerebrovascular Reactivity in American Football Players

NCT03417492
View directory record Official record
Conditions
Traumatic Brain Injury, Mild Traumatic Brain Injury, Post-Concussion Syndrome
Interventions
Sildenafil Citrate
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
40 Years to 65 Years · Male only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 20, 2022 · Synced Jul 22, 2026, 7:16 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 18, 2024 · Synced Jul 22, 2026, 7:16 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 18, 2014 · Synced Jul 22, 2026, 7:16 PM EDT
Terminated No phase listed Observational

Treatment of Dyspnea in Do-not-intubate Patients

NCT02114944
View directory record Official record
Conditions
Acute Respiratory Failure, Acute on Chronic Respiratory Failure, Dyspnea
Interventions
NIV, CPAP, Standard oxygen, HFNC
Device
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 12, 2025 · Synced Jul 22, 2026, 7:16 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 5, 2019 · Synced Jul 22, 2026, 7:16 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Postoperative Respiratory Abnormalities

NCT04079829
View directory record Official record
Conditions
Respiratory Failure, Respiratory Arrest, Respiratory Distress Syndrome, Acute Respiratory Failure, Acute Respiratory Failure With Hypoxia, Acute Respiratory Failure With Hypercapnia, Acute Respiratory Failure Post Surgical, Acute Respiratory Failure Postprocedural, Acute Respiratory Failure Following Trauma and Surgery, Acute Respiratory Failure Requiring Reintubation, Acute Respiratory Failure Post Traumatic, Acute Respiratory Decompensation, Shock, Shock, Septic, Shock, Cardiogenic, Acute Cardiac Failure, Multi Organ Failure, Acute Kidney Failure
Interventions
Observational retrospective cohort to describe data validity; and Data reliability; and Completeness of the data
Other
Lead sponsor
Efficacy Care R&D Ltd
Industry
Eligibility
18 Years to 90 Years
Enrollment
50,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2020 · Synced Jul 22, 2026, 7:16 PM EDT
Completed Not applicable Interventional

"Reversibility of Cardiovascular Injury With CPAP Use: Mechanisms Involved"

NCT01317329
View directory record Official record
Conditions
Sleep Apnea, Obstructive, Hypoxia, Hypercapnia, Sleep Disorders, Obesity, Hypertension, Coronary Artery Vasospasm, Right Ventricular Overload, Left Ventricular Function Systolic Dysfunction, Ventricular Hypertrophy
Interventions
Clinically prescribed CPAP therapy
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years to 50 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 5, 2020 · Synced Jul 22, 2026, 7:16 PM EDT
Terminated Not applicable Interventional

Weaning From Mechanical Ventilation Using Permissive Hypercarbia

NCT00357929
View directory record Official record
Conditions
Respiration, Artificial, Respiratory Distress Syndrome, Adult
Interventions
Permissive hypercarbia
Procedure
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 19, 2017 · Synced Jul 22, 2026, 7:16 PM EDT
Terminated Not applicable Interventional

Impact of Non-invasive Ventilation in Hypercapnic COPD

NCT03522805
View directory record Official record
Conditions
Copd, Chronic Obstructive Pulmonary Disease, Hypercapnia, Chronic Respiratory Failure, Hypoventilation
Interventions
High-intensity non-invasive ventilation
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
45 Years to 75 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 26, 2020 · Synced Jul 22, 2026, 7:16 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Brain Blood Flow: Age and Gender

NCT02840851
View directory record Official record
Conditions
Healthy, Aging
Interventions
MRI, TCD
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
20 Years to 64 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 8, 2019 · Synced Jul 22, 2026, 7:16 PM EDT
Terminated No phase listed Interventional Results available

Vector Efficacy Cross-Over Pilot Study

NCT04263532
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Modified BiPAP A40 with Vector Algorithm (Vector), Modified BiPAP A40 with Standard of Care Settings
Device
Lead sponsor
Philips Clinical & Medical Affairs Global
Industry
Eligibility
40 Years to 80 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 8, 2025 · Synced Jul 22, 2026, 7:16 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 18, 2025 · Synced Jul 22, 2026, 7:16 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 1, 2021 · Synced Jul 22, 2026, 7:16 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Oxygen Toxicity: Mechanisms in Humans

NCT05761756
View directory record Official record
Conditions
Oxygen Toxicity, Hypercapnia, Seizures
Interventions
Sleep Deprivation, Caffeine, Methylphenidate, Carbon Dioxide
Behavioral · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 45 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 22, 2025 · Synced Jul 22, 2026, 7:16 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study of Brain Blood Flow During Induced Hypercapnia (Excess Blood Carbon Dioxide)

NCT00001845
View directory record Official record
Conditions
Healthy, Hypercapnia
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 22, 2026, 7:16 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Effects of General Anesthetics on Upper Airway Collapsibility in Healthy Subjects

NCT01557920
View directory record Official record
Conditions
Airway Complication of Anaesthesia, Healthy
Interventions
Propofol, Sevoflurane
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 12, 2016 · Synced Jul 22, 2026, 7:16 PM EDT
Completed Not applicable Interventional Results available

Clinical Efficacy in Relief of Dyspnea by HVNI: Evaluation of New Cannulae Designs

NCT04512781
View directory record Official record
Conditions
Dyspnea, Hypercapnia, Respiratory Insufficiency
Interventions
Control Cannula - Prosoft Cannula - Unicorn Cannula, Control Cannula - Unicorn Cannula - Prosoft Cannula
Device
Lead sponsor
Vapotherm, Inc.
Industry
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania • Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 22, 2024 · Synced Jul 22, 2026, 7:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Variable Dead Space Rebreathing Device to Treat Sleep Apnea

NCT03552133
View directory record Official record
Conditions
Sleep Apnea, Obstructive, Sleep Apnea, Central
Interventions
Smart CO2
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Jul 22, 2026, 7:16 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 20, 2021 · Synced Jul 22, 2026, 7:16 PM EDT
Recruiting Not applicable Interventional

Cross-System Effects of Acute Intermittent Hypercapnia-Based Interventions in PD

NCT07674264
View directory record Official record
Conditions
Parkinson Disease, Parkinsonism
Interventions
Acute intermittent hypercapnic hypoxia (AIHH), Acute intermittent hypercapnic normoxia (AIHN)
Other
Lead sponsor
University of Florida
Other
Eligibility
40 Years to 75 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 28, 2026 · Synced Jul 22, 2026, 7:16 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 1, 2026 · Synced Jul 22, 2026, 7:16 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 28, 2016 · Synced Jul 22, 2026, 7:16 PM EDT