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Showing 1–24 of 167 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: 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 5, 2026, 11:31 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 Sep 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM 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 5, 2026, 11:31 PM EDT
Withdrawn Not applicable Interventional

Randomized CO2 vs Sham Laser Treatment of Provoked Vestibulodynia

NCT03390049
View directory record Official record
Conditions
Vestibulodynia
Interventions
Fractional CO2 Laser Treatment, Sham Laser Treatment
Device
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 9, 2019 · Synced Sep 5, 2026, 11:31 PM EDT
Active, not recruiting No phase listed Observational

Transcutaneous Carbon Dioxide Monitoring in Neonates Receiving Therapeutic Hypothermia for Neonatal Encephalopathy

NCT04603547
View directory record Official record
Conditions
Neonatal Encephalopathy
Interventions
Transcutaneous Carbon Dioxide Monitoring
Device
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
0 Days to 3 Days
Enrollment
53 participants
Timeline
2019 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Sep 5, 2026, 11:31 PM EDT
Completed Phase 2 Interventional Results available

Cetuximab Plus Biweekly Capecitabine and Oxaliplatin in KRAS Wild Type Metastatic Colorectal Cancer

NCT00444678
View directory record Official record
Conditions
Colorectal Cancer, Neoplasm Metastasis
Interventions
Cetuximab, Oxaliplatin, Capecitabine
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2015
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 2, 2020 · Synced Sep 5, 2026, 11:31 PM EDT
Completed Phase 2 Interventional Results available

Market Potential of Carbon Dioxide Nasal Spray

NCT02113449
View directory record Official record
Conditions
Nasal Congestion
Interventions
Carbon Dioxide
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
4
States / cities
Chandler, Arizona • Pinellas Park, Florida • Paramus, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Sep 5, 2026, 11:31 PM EDT
Completed No phase listed Observational Results available

Laser Therapy for Treatment of Urogenital Symptoms in Women

NCT03681678
View directory record Official record
Conditions
Genitourinary System; Disorder, Female, Burning Vagina, Dyspareunia, Irritation; Vagina, Menopause Related Conditions, Urinary Incontinence, Urinary Bladder, Overactive, Urinary Tract Infections, Stress Urinary Incontinence
Interventions
fCO2 Laser Therapy Group
Device
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years to 90 Years · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 16, 2026 · Synced Sep 5, 2026, 11:31 PM EDT
Completed Not applicable Interventional Results available

A Study to Determine if Carbon Dioxide Lavage During Total Knee Surgery Reduces Intraoperative Embolic Events

NCT00736125
View directory record Official record
Conditions
Postoperative Complications, Memory Disorders
Interventions
pulsatile saline lavage, carbon dioxide lavage
Device
Lead sponsor
Kinamed Incorporated
Industry
Eligibility
50 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 25, 2019 · Synced Sep 5, 2026, 11:31 PM EDT
Terminated Phase 2 Interventional

S9709, Laser Surgery Plus Radiation Therapy in Treating Patients With Early Stage Cancer of the Larynx

NCT00003040
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
laser surgery, radiation therapy
Procedure · Radiation
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2007
U.S. locations
12
States / cities
Little Rock, Arkansas • Los Angeles, California • Sacramento, California + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2012 · Synced Sep 5, 2026, 11:31 PM EDT
Withdrawn Not applicable Interventional

Dehydrated Human Amnion/Chorion Membrane (dHACM) for Recovery After Fractionated Ablative CO2 Laser Resurfacing of the Face

NCT01995604
View directory record Official record
Conditions
Scarring
Interventions
Application of Sterile 0.9% Saline Solution, Application of dHACM
Other
Lead sponsor
MiMedx Group, Inc.
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jun 12, 2014 · Synced Sep 5, 2026, 11:31 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Comparision of Air Versus CO2 for Distention During Sigmoidoscopy

NCT00771290
View directory record Official record
Conditions
Colorectal Surgery
Interventions
Air insufflation with standard endoscopy unit, CO2 insufflation for colonoscopy (special CO2 insufflation unit)
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2024 · Synced Sep 5, 2026, 11:31 PM EDT
Completed No phase listed Observational

Correlation of PaCO2 to the Inspired and Expired Oxygen Gradient

NCT01513213
View directory record Official record
Conditions
Neurosurgery
Interventions
Not listed
Lead sponsor
Swedish Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 23, 2017 · Synced Sep 5, 2026, 11:31 PM EDT
Completed No phase listed Observational

The Effects of Patient Features on Opioid Induced End-Tidal CO2

NCT01371903
View directory record Official record
Conditions
Opioid Use During Medical Care
Interventions
Not listed
Lead sponsor
Albany Medical College
Other
Eligibility
18 Years and older
Enrollment
278 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Albany, New York
Source: ClinicalTrials.gov public record
Updated Mar 23, 2014 · Synced Sep 5, 2026, 11:31 PM EDT