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ClinicalTrials.gov public records Last synced Sep 3, 2026, 10:13 PM EDT

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Showing 1–23 of 23 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Sham CO2 Clear all
Terminated Not applicable Interventional Accepts healthy volunteers

Combined Therapeutic Air Mixture and Electrical Stimulation to Improve Breathing and Hand Function in Spinal Cord Injury

NCT06101199
View directory record Official record
Conditions
Cervical Spinal Cord Injury
Interventions
Acute Intermittent Hypercapnic Hypoxia, Transcutaneous spinal cord stimulation, SHAM Acute Intermittent Hypercapnic Hypoxia, SHAM Transcutaneous spinal cord stimulation
Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 16, 2025 · Synced Sep 3, 2026, 10:13 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Transcranial Direct Current Stimulation (tDCS) as a Treatment for Acute Fear

NCT02410954
View directory record Official record
Conditions
Fear
Interventions
NeuroConn Direct Current stimulator Multiple Channel -4
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 17, 2021 · Synced Sep 3, 2026, 10:13 PM EDT
Withdrawn Not applicable Interventional

A Single-Blind, Randomized Study to Compare fCO2 Laser Therapy Versus Sham for Treatment of SUI in Women

NCT04253067
View directory record Official record
Conditions
Stress Urinary Incontinence, Urinary Incontinence
Interventions
Active fCO2 laser treatment, Sham fCO2 laser treatment
Device
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years to 75 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 16, 2020 · Synced Sep 3, 2026, 10:13 PM EDT
Recruiting Phase 3 Interventional

Testing Laser Therapy for Treatment of Vaginal Dryness in Survivors of Breast Cancer, The Revitalize Trial

NCT05379153
View directory record Official record
Conditions
Vaginal Atrophy, Breast Carcinoma
Interventions
Laser Therapy, Sham Intervention, Questionnaire Administration, Quality of Life Assessment
Device · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
22 Years and older · Female only
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
2
States / cities
Ann Arbor, Michigan • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 3, 2026, 10:13 PM EDT
Completed Not applicable Interventional

Fractional CO2 Laser Therapy in Minimizing Genitourinary Syndrome of Menopause in Gynecological Cancer Survivors

NCT03372720
View directory record Official record
Conditions
Cervical Carcinoma, Dyspareunia, Endometrial Carcinoma, Ovarian Carcinoma, Vaginal Carcinoma, Vaginal Dryness, Vulvar Carcinoma
Interventions
Laser Therapy, Questionnaire Administration, Sham Intervention
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
Female only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
4
States / cities
Baltimore, Maryland • Rochester, Minnesota • Fargo, North Dakota + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2022 · Synced Sep 3, 2026, 10:13 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

MonaLisa Touch Randomized Double-Blind Placebo Controlled Study

NCT03331328
View directory record Official record
Conditions
Genitourinary Syndrome of Menopause
Interventions
MonaLisa Touch
Device
Lead sponsor
Michigan Institution of Women's Health PC
Other
Eligibility
Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Dearborn, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 13, 2019 · Synced Sep 3, 2026, 10:13 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Treatment of Sleep Apnea in Patients With Cervical Spinal Cord Injury

NCT02922894
View directory record Official record
Conditions
Sleep Apnea, Spinal Cord Injury
Interventions
Acute episodic hypoxia, Supplemental oxygen, Trazodone, Placebo, Sham
Procedure · Drug
Lead sponsor
John D. Dingell VA Medical Center
Federal
Eligibility
18 Years to 89 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2027
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 3, 2026, 10:13 PM EDT
Withdrawn Not applicable Interventional

Noninvasive Positive Airway Pressure in the Pediatric Emergency Department for the Treatment of Acute Asthma Exacerbations

NCT01497691
View directory record Official record
Conditions
Asthma
Interventions
NIPPV (PALMtop PTV), Volumetric CO2 (NM3), USCOM
Device
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
2 Years to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 23, 2017 · Synced Sep 3, 2026, 10:13 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Vaginal Changes After CO2 Laser

NCT06691178
View directory record Official record
Conditions
Genitourinary Syndrome of Menopause
Interventions
Optical coherence tomography (OCT)
Diagnostic Test
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Sep 3, 2026, 10:13 PM EDT
Recruiting Not applicable Interventional

BioFLO for Respiratory Recovery in SCI

NCT06011876
View directory record Official record
Conditions
Spinal Cord Injuries
Interventions
Acute Intermittent Hypoxia (AIH), Acute Intermittent Hypercapnic-Hypoxia (AIHH), Sham AIH
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Sep 3, 2026, 10:13 PM EDT
Withdrawn Phase 2 Interventional

N2O for Acute Suicidality and Depression in the ED

NCT05710887
View directory record Official record
Conditions
Suicidal Ideation, Major Depressive Disorder, Treatment Resistant Depression
Interventions
Nitrous oxide gas for inhalation, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Sep 3, 2026, 10:13 PM EDT
Recruiting Not applicable Interventional

Reversible Effect of Falling Ventilatory Drive in Drive-dependent OSA

NCT06091098
View directory record Official record
Conditions
OSA
Interventions
Dynamic CO2, Sham CO2
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years to 80 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 18, 2025 · Synced Sep 3, 2026, 10:13 PM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Nitrous Oxide as Treatment for Fibromyalgia

NCT05357066
View directory record Official record
Conditions
Fibromyalgia, Central Neuropathic Pain
Interventions
Nitrous oxide gas for inhalation, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 3, 2026, 10:13 PM EDT
Completed Not applicable Interventional

MonaLisa Touch Laser for the Treatment of Vulvar Lichen Sclerosus

NCT03665584
View directory record Official record
Conditions
Lichen Sclerosus
Interventions
FxCO2 Laser, Sham Laser
Device
Lead sponsor
Center for Vulvovaginal Disorders
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Nov 11, 2020 · Synced Sep 3, 2026, 10:13 PM EDT
Recruiting Phase 1Phase 2 Interventional

Intermittent Hypoxia-initiated Plasticity in Humans: A Multi-pronged Therapeutic Approach to Treat Sleep Apnea and Overlapping Co-morbidities

NCT05558501
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Mild Intermittent Hypoxia, Sham MIH
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
30 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Sep 3, 2026, 10:13 PM EDT
Completed Not applicable Interventional Results available

Evaluating the Safety and Efficacy of Fractionated Carbon Dioxide Therapy in Postoperative Lower Extremity Wound Healing

NCT03644849
View directory record Official record
Conditions
Leg Ulcer
Interventions
CO2RE® (Syneron Candela Corp, Wayland, MA), Sham laser treatment
Device · Other
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 90 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 10, 2022 · Synced Sep 3, 2026, 10:13 PM EDT
Recruiting Not applicable Interventional

Hypoxia Pathways for Early Recovery After Spinal Cord Injury

NCT07002437
View directory record Official record
Conditions
Spinal Cord Injuries (SCI)
Interventions
Augmented Acute Intermittent Hypoxia (aAIH), Acute Intermittent Hypercapnic-Hypoxia (AIHH), Sham AIH
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 70 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Sep 3, 2026, 10:13 PM EDT
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 3, 2026, 10:13 PM EDT
Recruiting Not applicable Interventional

Mild Intermittent Hypoxia: A Prophylactic for Autonomic Dysfunction in Individuals With Spinal Cord Injuries

NCT05351827
View directory record Official record
Conditions
Spinal Cord Injuries, Autonomic Dysreflexia
Interventions
Mild Intermittent Hypoxia, Sham
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 60 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 3, 2026, 10:13 PM EDT
Not listed Not applicable Interventional

Mild Intermittent Hypoxia and Its Multipronged Effect on Sleep Apnea

NCT03736382
View directory record Official record
Conditions
Obstructive Sleep Apnea, Spinal Cord Injuries
Interventions
Mild intermittent hypoxia, Sham protocol, Continuous positive airway pressure (CPAP)
Other
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 60 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
2
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 18, 2024 · Synced Sep 3, 2026, 10:13 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 3, 2026, 10:13 PM 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 12, 2021 · Synced Sep 3, 2026, 10:13 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 3, 2026, 10:13 PM EDT