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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
Completed Not applicable Interventional

Study of the Carbon Dioxide Treatment for Fat Reduction

NCT00974415
View directory record Official record
Conditions
Overweight
Interventions
CO2, Sham
Procedure
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 60 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 1, 2026, 2:46 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Prospective, Open-Label, Single-Center, Non-Comparative Study to Assess the Use of Pixel CO2 Laser System (FemiLift) in the Treatment of Vulvovaginal Atrophy (VVA) in Postmenopausal Female Subjects

NCT02747641
View directory record Official record
Conditions
Atrophy, Vaginal Atrophy, Genital Diseases, Female
Interventions
Pixel CO2 Laser System
Procedure
Lead sponsor
Alma Lasers Inc.
Industry
Eligibility
35 Years to 70 Years · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Weston, Florida
Source: ClinicalTrials.gov public record
Updated Nov 20, 2017 · Synced Sep 1, 2026, 2:46 PM EDT
Completed No phase listed Observational

Breethe Abiomed Recovery RegisTry (BART)

NCT05473130
View directory record Official record
Conditions
Cardiopulmonary Bypass, ARDS, Heart Failure
Interventions
Breethe Oxy-1 System
Device
Lead sponsor
Abiomed Inc.
Industry
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
6
States / cities
Orlando, Florida • Atlanta, Georgia • College Park, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2024 · Synced Sep 1, 2026, 2:46 PM EDT
Not listed Not applicable Interventional

Cholangiography Using Carbon Dioxide Versus Iodinated Contrast in ERCP

NCT02611453
View directory record Official record
Conditions
Choledocholithiasis, Bile Duct Diseases, Bile Duct Carcinoma
Interventions
"Air" contrast cholangiography using carbon dioxide gas
Other
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 2, 2024 · Synced Sep 1, 2026, 2:46 PM EDT
Recruiting Not applicable Interventional

Platform of Randomized Adaptive Clinical Trials in Critical Illness

NCT05440851
View directory record Official record
Conditions
Respiratory Insufficiency, Extracorporeal Membrane Oxygenation Complication, Mechanical Ventilation Pressure High
Interventions
Ultra-Protective Ventilation Facilitated by Extracorporeal Support, Lung-Protective Ventilation (LPV), Driving Pressure-Limited Ventilation (DPL), Lung- and Diaphragm-Protective Ventilation and Sedation (LDPVS), Early Cohort corticosteroid dose, Extended Cohort corticosteroid dose, Usual care without routine corticosteroids, Usual care without extending corticosteroids, Usual care with fludrocortisone, Usual care without fludrocortisone, Drug 4 mL:, Drug 40 mg:, PEEP-20, PEEP-AOP, PEEP-10, VV ECMO-facilitated strategy of earlier awakening, extubation and rehabilitation, Electrical impedance tomography (EIT), no treatment / intervention arm is involved., Usual care, Early Routine IMT
Other · Drug
Lead sponsor
University Health Network, Toronto
Other
Eligibility
18 Years and older
Enrollment
6,250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
26
States / cities
Tucson, Arizona • Los Angeles, California • San Diego, California + 19 more
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Sep 1, 2026, 2:46 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 1, 2026, 2:46 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Water Immersion and Polyp Detection: A Randomized Controlled Trial

NCT03231917
View directory record Official record
Conditions
Adenoma, Colonic Neoplasms
Interventions
Water Infusion first, CO2 Insufflation First
Procedure
Lead sponsor
White River Junction Veterans Affairs Medical Center
Federal
Eligibility
50 Years and older
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
2
States / cities
Farmington, Connecticut • Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 11, 2019 · Synced Sep 1, 2026, 2:46 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 1, 2026, 2:46 PM EDT
Completed Not applicable Interventional Results available

Ventilation Strategies, Anesthetic Techniques and Cerebral Oxygenation in the Beach Chair Position

NCT01535274
View directory record Official record
Conditions
Stroke
Interventions
Inspired oxygen fraction / end tidal carbon dioxide
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 85 Years
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Sep 1, 2026, 2:46 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 1, 2026, 2:46 PM 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 13, 2018 · Synced Sep 1, 2026, 2:46 PM EDT
Recruiting Not applicable Interventional

Non-Invasive Interventions for Respiratory Recovery in Chronic Spinal Cord Injury

NCT07135583
View directory record Official record
Conditions
Spinal Cord Injury, Chronic, Spinal Cord Injury Cervical, Spinal Cord Injury Thoracic, Incomplete Spinal Cord Injury
Interventions
Active Comparator: Single Intervention 1, Active Comparator: Single Intervention 2, Respiratory Resistance Exercise
Other · Behavioral
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Sep 1, 2026, 2:46 PM EDT
Withdrawn Not applicable Interventional

High Flow Therapy (HFT) to Treat Respiratory Insufficiency in Chronic Obstructive Pulmonary Disease (COPD)

NCT00990119
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive, Respiratory Insufficiency
Interventions
Vapotherm High Flow Therapy, Non-invasive positive pressure ventilation
Device
Lead sponsor
Vapotherm, Inc.
Industry
Eligibility
50 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 15, 2020 · Synced Sep 1, 2026, 2:46 PM EDT
Suspended Not applicable Interventional

Insulin Sensitivity in Men With the Metabolic Syndrome

NCT00433173
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
intravenous glucose tolerance test, testosterone, anastrozole, goserelin acetate implant, aerobic capacity (VO2 Max), MRI, muscle biopsy, measurement of resting metabolic rate (energy expenditure), Dual energy x-ray absorptiometry, Fasting oral glucose tolerance test
Procedure · Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
50 Years to 75 Years · Male only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
2
States / cities
Baltimore, Maryland • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 1, 2010 · Synced Sep 1, 2026, 2:46 PM EDT
Completed No phase listed Observational

End-Tidal Carbon Dioxide as a Measure of Carboxyhemoglobin in Carbon Monoxide Poisoning

NCT01859156
View directory record Official record
Conditions
Carbon Monoxide Exposure
Interventions
Not listed
Lead sponsor
Hennepin Healthcare Research Institute
Other
Eligibility
18 Years and older
Enrollment
151 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 28, 2014 · Synced Sep 1, 2026, 2:46 PM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

Central Apnea in Heart Failure: Physiological Mechanisms to Inform Treatment

NCT07210606
View directory record Official record
Conditions
Sleep Disordered Breathing, Able Bodied
Interventions
Trazodone + PAP therapy, Oxygen + PAP therapy
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Sep 1, 2026, 2:46 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Central Sleep Apnea : Physiologic Mechanisms to Inform Treatment

NCT04118387
View directory record Official record
Conditions
Sleep Disordered Breathing, Able Bodied
Interventions
Acetazolamide + supplemental oxygen + PAP therapy, Zolpidem + PAP therapy, Buspirone + PAP therapy
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Sep 1, 2026, 2:46 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 1, 2026, 2:46 PM EDT
Completed Not applicable Interventional

Endoluminal and Needlescopic Assisted Repair of Rectal Prolapse

NCT01980043
View directory record Official record
Conditions
Rectal Prolapse
Interventions
endoluminal rectal prolapse repair under sedation
Procedure
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
75 Years to 100 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2019 · Synced Sep 1, 2026, 2:46 PM EDT
Completed Phase 3 Interventional

Laparoscopic-Assisted Surgery Compared With Open Surgery in Treating Patients With Colon Cancer

NCT00002575
View directory record Official record
Conditions
Colorectal Cancer
Interventions
conventional surgery, laparoscopic surgery
Procedure
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
810 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1994 – 2009
U.S. locations
145
States / cities
Huntsville, Alabama • Mobile, Alabama • Phoenix, Arizona + 116 more
Source: ClinicalTrials.gov public record
Updated Jul 17, 2016 · Synced Sep 1, 2026, 2:46 PM EDT
Completed Early Phase 1 Interventional

Safety, Tolerability, and Pharmacodynamics of SYNB8802v1 in Subjects With History of Gastric Bypass Surgery or Short-bowel Syndrome

NCT05377112
View directory record Official record
Conditions
Enteric Hyperoxaluria
Interventions
SYNB8802v1, Placebo
Drug · Other
Lead sponsor
Synlogic
Industry
Eligibility
18 Years to 74 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Mar 16, 2023 · Synced Sep 1, 2026, 2:46 PM EDT
Completed No phase listed Observational

Detection of Atelectasis or Pneumothorax and Resolution With Electrical Impedance Tomography (EIT) in Newborn Infants

NCT04848727
View directory record Official record
Conditions
Atelectasis Neonatal, Pneumothorax and Air Leak
Interventions
Detecting asymmetric lung disease like atelectasis or pneumothorax with electrical impedance tomography (EIT)
Other
Lead sponsor
Sharp HealthCare
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 1, 2026, 2:46 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effectiveness and Safety of the Colonoscopy With "Visualization" Balloon

NCT02117232
View directory record Official record
Conditions
Colonic Adenomatous Polyps
Interventions
Visualization balloon, Traditional CO2 insufflation colonoscopy
Device
Lead sponsor
Mercy Medical Center
Other
Eligibility
17 Years to 90 Years
Enrollment
216 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 20, 2018 · Synced Sep 1, 2026, 2:46 PM EDT
Completed Not applicable Interventional

CO2 Laser Phototherapy for Management of Mature Burn Scars

NCT03197649
View directory record Official record
Conditions
Burn Scar
Interventions
Laser phototherapy treatment
Procedure
Lead sponsor
University of California, Davis
Other
Eligibility
3 Years to 21 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jul 15, 2020 · Synced Sep 1, 2026, 2:46 PM EDT