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ClinicalTrials.gov public records Last synced Oct 29, 2026, 11:24 AM EDT

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Showing 1–24 of 41 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Nasal CO2 Clear all
Completed Not applicable Interventional Results available

A Comparison of the Detection of Hypoventilation During Deep Sedation Utilizing Nasal End Title CO@ Versus Transcutaneous CO2 Measurement Techniques

NCT00954733
View directory record Official record
Conditions
Surgery, Hypoventilation
Interventions
Arterial blood draw
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 24, 2014 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Not applicable Interventional

SuperNO2VA Et Versus Oxygen Face Mask During Deep Sedation

NCT05175573
View directory record Official record
Conditions
Hypoxemia
Interventions
SuperNO2VA Et Nasal Positive Pressure Mask, Supplemental Oxygen Face Mask
Device
Lead sponsor
Vyaire Medical
Industry
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 3, 2022 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Exercise and Energy Balance on 24-hour Blood Glucose Control

NCT03350997
View directory record Official record
Conditions
Metabolic Disease, Adipose Tissue
Interventions
Trial 2 Exercise, Trial 1 Exercise
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 40 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 21, 2022 · Synced Oct 29, 2026, 11:24 AM EDT
Withdrawn Not applicable Interventional

Oscillatory Versus Non-oscillatory Nasal Continuous Airway Pressure Neonatal Respiratory Support

NCT03711565
View directory record Official record
Conditions
Neonatal Respiratory Distress Related Conditions
Interventions
Regular Nasal CPAP using a conventional ventilator, High Frequency Nasal CPAP
Device
Lead sponsor
University of California, Davis
Other
Eligibility
Up to 4 Months
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 6, 2021 · Synced Oct 29, 2026, 11:24 AM EDT
Completed No phase listed Interventional Results available

Companion Protocol for ¹³C-Methacetin Breath Tests in BMS: NCT03486899, NCT03486912 Referenced Trials

NCT03611101
View directory record Official record
Conditions
NASH - Nonalcoholic Steatohepatitis
Interventions
¹³C-Methacetin Breath Test, BMS-986036, BreathID MCS device
Combination Product · Drug · Device
Lead sponsor
Meridian Bioscience, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Humble, Texas
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Not applicable Interventional

Effect of CPAP on Fetal pH at Scheduled C-section in Morbidly Obese Women

NCT04993651
View directory record Official record
Conditions
Morbid Obesity, Cesarean Delivery Affecting Fetus
Interventions
CPAP
Device
Lead sponsor
Eastern Virginia Medical School
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Phase 2 Interventional

Nasal Carbon Dioxide (CO2)for the Treatment of Temporomandibular Disorders (TMD)Related Pain

NCT00484029
View directory record Official record
Conditions
Temporomandibular Disorders, Pain, Headaches
Interventions
Nasal Carbon Dioxide, Air
Drug · Other
Lead sponsor
Capnia, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 20, 2010 · Synced Oct 29, 2026, 11:24 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Cerebrovascular Reactivity Assessed With fNIRS as a Biomarker of TCVI After Acute Traumatic Brain Injury in Military

NCT04058132
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Sildenafil Citrate 50Mg Tab, functional Near-infrared Spectroscopy (fNIRS), Carbon Dioxide (CO2) 5%, Neuropsychological Assessments, Gadolinium contrast infusion, Blood sample collection for research purposes, Structural brain Magnetic Resonance Imaging (MRI
Drug · Device · Other + 1 more
Lead sponsor
Uniformed Services University of the Health Sciences
Federal
Eligibility
18 Years to 55 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Oct 29, 2026, 11:24 AM EDT
Recruiting No phase listed Observational

The APS Phenotyping Study

NCT06521502
View directory record Official record
Conditions
ARDS, Sepsis, Pneumonia
Interventions
Blood collection, Urine Collection, Nasal, oral, and rectal swabs, Stool collection, Heat Moisture Exchange Filter collection, Tracheal Aspirate sample collection, Non-bronchoscopic bronchoalveolar lavage (NBBAL), Surveys, Short physical performance battery, Hand grip strength, CNS Vital Signs, Muscle Ultrasound, Muscle Strength, Spirometry, Lung Diffusion Testing (DLCO), Chest CT Scan
Other · Procedure · Radiation
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
4,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
20
States / cities
Fresno, California • Palo Alto, California • San Francisco, California + 12 more
Source: ClinicalTrials.gov public record
Updated Feb 20, 2026 · Synced Oct 29, 2026, 11:24 AM EDT
Not listed Not applicable Interventional

End-Tidal Oxygen for Intubation in the Emergency Department

NCT06578468
View directory record Official record
Conditions
Critical Illness, Hypoxia, Respiratory Failure
Interventions
End-tidal oxygen monitor
Device
Lead sponsor
Sydney Local Health District
Government
Eligibility
18 Years and older
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
3
States / cities
Minneapolis, Minnesota • Albuquerque, New Mexico • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 29, 2026, 11:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Comparison of Pulse Oximetry, End-tidal Capnometry, and Integrated Pulmonary Index (IPI)

NCT01191528
View directory record Official record
Conditions
Postoperative Care
Interventions
capnostream 20, Oridian Medical 1987 ltd, Needham MA
Device
Lead sponsor
Allenmore Hospital
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Dec 13, 2010 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Phase 2 Interventional

Nasal Carbon Dioxide for the Symptomatic Treatment of Classical Trigeminal Neuralgia

NCT02473016
View directory record Official record
Conditions
Trigeminal Neuralgia
Interventions
Carbon Dioxide Drug Delivery System (CDDS)
Drug
Lead sponsor
Capnia, Inc.
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
6
States / cities
Los Angeles, California • Tampa, Florida • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 17, 2017 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Phase 3 Interventional Results available

Use of Methacetin Breath Test to Predict Liver Failure in Patients With Cirrhosis

NCT01157845
View directory record Official record
Conditions
Cirrhosis
Interventions
BreathID (Methacetin breath test)
Device
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
3
States / cities
Detroit, Michigan • Charleston, South Carolina • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated May 16, 2014 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessment of N-95 Facemask for Use in COVID-19 Pandemic in Case of Shortage of Personal Protective Equipment

NCT04416919
View directory record Official record
Conditions
Coronavirus Infection, Disease Prevention
Interventions
Assembled mask
Other
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Mar 8, 2024 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Stroke and CPAP Outcome Study: A Sham-controlled Trial of CPAP Among Stroke Rehabilitation Patients

NCT02551757
View directory record Official record
Conditions
Stroke, Sleep Apnea, Obstructive
Interventions
Auto-titrating CPAP, Sham-CPAP
Device
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 13, 2021 · Synced Oct 29, 2026, 11:24 AM 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 29, 2026, 11:24 AM EDT
Completed Phase 2 Interventional

The Effect of Nasal Carbon Dioxide (CO2) Used As-Needed in the Symptomatic Treatment of Seasonal Allergic Rhinitis

NCT00917020
View directory record Official record
Conditions
Seasonal Allergic Rhinitis
Interventions
Nasal CO2, Inactive Placebo Gas
Drug
Lead sponsor
Capnia, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 15, 2012 · Synced Oct 29, 2026, 11:24 AM EDT
Terminated Not applicable Interventional

Pre-oxygenation and Measures of Gas Exchanges During Seizures in the Epilepsy Monitoring Unit

NCT02241798
View directory record Official record
Conditions
Epilepsy
Interventions
oxygen
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 70 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Oct 29, 2026, 11:24 AM EDT
Terminated Phase 2 Interventional

The Effect of Nasal Carbon Dioxide in the Treatment of Moderate to Severe Migraine

NCT01253915
View directory record Official record
Conditions
Migraine
Interventions
Nasal Carbon Dioxide, Placebo
Drug
Lead sponsor
Capnia, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
3
States / cities
San Diego, California • Bethesda, Maryland • Portsmouth, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 31, 2013 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Not applicable Interventional

Comparison of Two-hand Mask Ventilation Technique: Standard V-E Versus Reversal V-E Technique

NCT03170037
View directory record Official record
Conditions
Intubation
Interventions
Standard V-E ventilation technique, Reversal V-E ventilation technique
Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 17, 2017 · Synced Oct 29, 2026, 11:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Cerebral Blood Flow and Childhood Obstructive Sleep Apnea

NCT02995837
View directory record Official record
Conditions
Obstructive Sleep Apnea Syndrome
Interventions
Sleep Study, Neurocognitive Testing, CBF During Wakefulness, CBF During Sleep
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
6 Years to 12 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 9, 2024 · Synced Oct 29, 2026, 11:24 AM EDT
Terminated Phase 2 Interventional Results available

Pilot Study Evaluating the Use of Nasal Carbon Dioxide for the Treatment of Cluster Headache

NCT02381795
View directory record Official record
Conditions
Cluster Headache
Interventions
Nasal Carbon Dioxide
Drug
Lead sponsor
Cady, Roger, M.D.
Individual
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Springfield, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 14, 2018 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Not applicable Interventional Results available

A Trial To Assess Risk of Delirium in Older Adults Undergoing Hip Fracture Surgery With Spinal or General Anesthesia

NCT02190903
View directory record Official record
Conditions
Postoperative Complications, Hip Fracture, Delirium
Interventions
General endotracheal anesthesia, Regional (spinal) Anesthesia
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 30, 2018 · Synced Oct 29, 2026, 11:24 AM EDT
Completed Not applicable Interventional Results available

Physiological Changes With High-Flow Nasal Cannula

NCT03700606
View directory record Official record
Conditions
Respiratory Distress Syndrome in Premature Infant
Interventions
High flow nasal cannula, Nasal CPAP
Procedure
Lead sponsor
Sharp HealthCare
Other
Eligibility
23 Weeks to 28 Weeks
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Oct 29, 2026, 11:24 AM EDT