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ClinicalTrials.gov public records Last synced Sep 6, 2026, 3:34 AM EDT

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Showing 1–24 of 399 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Carbon dioxide Clear all
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 12, 2017 · Synced Sep 6, 2026, 3:34 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Hyaluronidase Via LADD Scleroderma-induced Microstomia

NCT05995626
View directory record Official record
Conditions
Microstomia, Scleroderma
Interventions
Hyaluronidase, CO2 laser
Drug · Device
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
2
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 6, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

In Vivo Pulse Oximeter Validation Study

NCT05873335
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Dec 11, 2024 · Synced Sep 6, 2026, 3:34 AM 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 Sep 6, 2026, 3:34 AM EDT
Completed Not applicable Interventional

The Effects of MAP and EtCO2 on Venous Sinus Pressures

NCT03867461
View directory record Official record
Conditions
Idiopathic Intracranial Hypertension
Interventions
Venous Sinus Stenting, Adjustment to end-tidal carbon dioxide concentrations ( 38-40 mmHg range), Adjustment to Mean Arterial Pressure (100-110 mmHg range), Adjustment to Mean Arterial Pressure (60-80 mmHg range), Adjustment to end-tidal carbon dioxide concentrations (24-26 mmHg range)
Procedure · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated May 11, 2020 · Synced Sep 6, 2026, 3:34 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 29, 2018 · Synced Sep 6, 2026, 3:34 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Retinal Blood Flow and Autoregulation

NCT05344274
View directory record Official record
Conditions
Glaucoma
Interventions
Indocyanine Green Angiography, Isocapnic Oxygen, Ocular Imaging with Optical Coherence Tomography (OCT) and Adaptive Optics (AO)
Diagnostic Test · Biological
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 88 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
4
States / cities
Baltimore, Maryland • Silver Spring, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Sep 6, 2026, 3:34 AM EDT
Completed No phase listed Observational

Retrospective Analysis of Treatment Outcomes in Patients With Bacterial Overgrowth Syndrome Diagnosed by D-Xylose Breath Testing

NCT01324895
View directory record Official record
Conditions
Small Intestinal Bacterial Overgrowth Syndrome (SIBO), Small Bowel Bacterial Overgrowth Syndrome (SBBOS)
Interventions
Not listed
Lead sponsor
University of Florida
Other
Eligibility
Not listed
Enrollment
944 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 25, 2012 · Synced Sep 6, 2026, 3:34 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluating Procedure Pairing of a Post-Procedure Cream Versus a Comparator in Patients Treated With Fractional Ablative CO2 Laser for Facial Rejuvenation

NCT06366503
View directory record Official record
Conditions
Photoaging, Wrinkle, Skin Laxity
Interventions
Fractional Ablative CO2 Laser, Facial Cleanser, Facial Moisturizer, Sunscreen, Basic Ointment
Procedure · Other
Lead sponsor
Revision Skincare
Industry
Eligibility
35 Years to 65 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Blue Ash, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 2, 2025 · Synced Sep 6, 2026, 3:34 AM EDT
Recruiting Not applicable Interventional

Short Title: Standard vs. Lower Pressure Pneumoperitoneum

NCT06338865
View directory record Official record
Conditions
Laparoscopic Surgery
Interventions
Carbon dioxide, Bupivacaine, Oxycodone
Other · Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
294 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 9, 2024 · Synced Sep 6, 2026, 3:34 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers

Comparison of Adenoma Detection Rate Among Water, Carbon Dioxide and Air Methods of Minimal Sedation Colonoscopy

NCT01782014
View directory record Official record
Conditions
Screening Colonoscopy
Interventions
colonoscopy
Procedure
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 80 Years
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jan 31, 2016 · Synced Sep 6, 2026, 3:34 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 16, 2017 · Synced Sep 6, 2026, 3:34 AM EDT
Completed Phase 2Phase 3 Interventional

Cyrotherapy vs. APC in GAVE

NCT00587405
View directory record Official record
Conditions
Watermelon Stomach
Interventions
cryotherapy, Argon Plasma Coagulation
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 85 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 6, 2016 · Synced Sep 6, 2026, 3:34 AM EDT
Completed Not applicable Interventional

A Trial of Supplemental CO2 Versus Room Air in Percutaneous Endoscopic Gastrostomy

NCT02619656
View directory record Official record
Conditions
Pneumoperitoneum
Interventions
CO2 insufflation, Ambient air insufflation
Procedure
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced Sep 6, 2026, 3:34 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

SpO2 Validation Study-Philips Optimus

NCT07215429
View directory record Official record
Conditions
Pulse Oximetry, Oxygen Measurements, SpO2
Interventions
No intervention
Device
Lead sponsor
Philips Clinical & Medical Affairs Global
Industry
Eligibility
18 Years to 50 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Louisville, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 6, 2026, 3:34 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Chemoreflex and Baroreflex Alterations Causing Postural Tachycardia Syndrome With Orthostatic Hyperpnea and Hypocapnia

NCT05923840
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Hypocapnia, Hyperventilation
Interventions
Chemoreflex Testing, Baroreflex testing, Orthostatic stress testing
Diagnostic Test
Lead sponsor
New York Medical College
Other
Eligibility
15 Years to 39 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Sep 6, 2026, 3:34 AM EDT
Not listed Not applicable Interventional

Correlation of CO2 Measured by Blood Gas vs Transcutaneous Monitor

NCT03268395
View directory record Official record
Conditions
Respiratory Complication
Interventions
Arterial Blood Gas and Transcutaneous CO2 Monitor
Diagnostic Test
Lead sponsor
Memorial Health University Medical Center
Other
Eligibility
Not listed
Enrollment
266 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Savannah, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Sep 6, 2026, 3:34 AM EDT
Terminated Not applicable Interventional Results available

Microwave Coagulation in Partial Nephrectomy Protocol

NCT01931462
View directory record Official record
Conditions
Cancer of Kidney
Interventions
Microwave pre-coagulation
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 25, 2018 · Synced Sep 6, 2026, 3:34 AM EDT
Terminated Phase 3 Interventional

Minimal Breathing Support and Early Steroids to Prevent Chronic Lung Disease in Extremely Premature Infants (SAVE)

NCT00005777
View directory record Official record
Conditions
Bronchopulmonary Dysplasia, Respiratory Distress Syndrome, Infant, Newborn, Infant, Low Birth Weight, Infant, Small for Gestational Age, Infant, Premature
Interventions
Minimal mechanical ventilation management, Routine mechanical ventilation management, Dexamethasone, Placebo
Procedure · Drug
Lead sponsor
NICHD Neonatal Research Network
Network
Eligibility
5 Minutes to 10 Days
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2002
U.S. locations
13
States / cities
Birmingham, Alabama • Palo Alto, California • New Haven, Connecticut + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2015 · Synced Sep 6, 2026, 3:34 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Development of a Breath Analyzer for Asthma Screening

NCT00386737
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
Ekips Technologies
Industry
Eligibility
4 Years to 65 Years
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Norman, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 11, 2006 · Synced Sep 6, 2026, 3:34 AM EDT
Active, not recruiting No phase listed Observational

End-Tidal CO2 (ETCO2) Trends in Out-of-Hospital Cardiac Arrest

NCT07632430
View directory record Official record
Conditions
Prehospital Resuscitation, End-Tidal Carbon Dioxide, Cardiac Arrest, Out-Of-Hospital, Prehospital Emergency Medical Services
Interventions
Not listed
Lead sponsor
Office of the Medical Director for EMS in Oklahoma City and Tulsa
Other
Eligibility
18 Years and older
Enrollment
3,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 6, 2026, 3:34 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Clinical Validation of Non-Contact Vital Signs

NCT07362641
View directory record Official record
Conditions
Vital Sign Evaluation
Interventions
SmartSpectra Vital Signs Monitor measurement
Device
Lead sponsor
Presage Technologies, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 23, 2026 · Synced Sep 6, 2026, 3:34 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Comparison of the Classic Face Mask Versus NuMask for Preoxygenation

NCT01865851
View directory record Official record
Conditions
Inspired Oxygen (FIO2), End-tidal Oxygen (ETO2), End-tidal Carbon Dioxide (ETCO2) and Respiratory Rate (RR) Will be Measured Every 30 Seconds
Interventions
Classic Face Mask and NuMask
Device
Lead sponsor
Nimmagadda, Usharani, M.D.
Individual
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 13, 2017 · Synced Sep 6, 2026, 3:34 AM 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 Sep 6, 2026, 3:34 AM EDT