Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 2, 2026, 5:53 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 397 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: CO2 Clear all
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 2, 2026, 5:53 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 2, 2026, 5:53 PM EDT
Completed Phase 4 Interventional Results available

The Role of Orexin in Human Panic Disorder

NCT02593682
View directory record Official record
Conditions
Panic Disorder
Interventions
suvorexant, placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Sep 2, 2026, 5:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

CO2 Laser vs Lidocaine for Vestibulodynia in Premenopausal Women

NCT05336825
View directory record Official record
Conditions
Vulvodynia
Interventions
CO2 laser, Lidocaine patch 5%
Device · Drug
Lead sponsor
Atlantic Health System
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Denville, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 19, 2022 · Synced Sep 2, 2026, 5:53 PM EDT
Completed No phase listed Observational

Apolipoprotein E (ApoE) and Metabolism

NCT03109561
View directory record Official record
Conditions
Cognitive Function, Healthy
Interventions
Resting State Indirect Calorimetry, ApoE, Metabolism, Cognitive Challenge
Other · Genetic · Diagnostic Test
Lead sponsor
Lance Johnson
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Timeline
2018 – 2020
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Sep 2, 2026, 5:53 PM EDT
Withdrawn Not applicable Interventional

NiPPV in the Treatment of Acute Asthma Exacerbations

NCT03219736
View directory record Official record
Conditions
Bronchial Asthma, Status Asthmaticus
Interventions
Standard of Care therapies, NiPPV Therapy, Routine Respiratory Care
Procedure · Device
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
2 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Feb 21, 2023 · Synced Sep 2, 2026, 5:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Vital USA Respiratory Rate Validation In Adults

NCT04292639
View directory record Official record
Conditions
Respiratory Complication
Interventions
The Vital Detect Pulse Oximeter
Device
Lead sponsor
Vital USA, Inc.
Industry
Eligibility
18 Years to 52 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Louisville, Colorado
Source: ClinicalTrials.gov public record
Updated May 27, 2020 · Synced Sep 2, 2026, 5:53 PM EDT
Completed Not applicable Interventional

Veress Entry With/Without Concomitant CO2

NCT02896036
View directory record Official record
Conditions
Laparoscopy, Laparoscopic Surgery, Insufflation, Gynecologic Surgical Procedures
Interventions
Veress needle entry with concomitant CO2, Veress needle entry with subsequent CO2
Procedure
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Mar 29, 2018 · Synced Sep 2, 2026, 5:53 PM EDT
Completed Not applicable Interventional

The Influence of Cardiorespiratory Fitness on Firefighter Cardiovascular Health Under Exercise Conditions

NCT04514354
View directory record Official record
Conditions
Cardiovascular Diseases, Post-Exercise Hypotension
Interventions
GEST
Behavioral
Lead sponsor
University of Connecticut
Other
Eligibility
21 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 13, 2020 · Synced Sep 2, 2026, 5:53 PM EDT
Completed No phase listed Observational

Transcutaneous Carbon Dioxide Monitoring Post Cardiac Surgery: Incidence and Severity Resp Insufficiency

NCT01188590
View directory record Official record
Conditions
Respiratory Insufficiency
Interventions
TOSCA 500 monitor
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years to 85 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 12, 2016 · Synced Sep 2, 2026, 5:53 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Exercise in Adolescents With Insulin Resistance

NCT04154865
View directory record Official record
Conditions
Insulin Resistance
Interventions
Hypercapnia, Transcranial Doppler, Cycle ergometer, Cognitive Tests
Other · Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
12 Years to 18 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Sep 2, 2026, 5:53 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 2, 2026, 5:53 PM EDT
Not listed Phase 1Phase 2 Interventional

Impact of CBD-Rich Oil on Aversive Memory Reconsolidation

NCT04726475
View directory record Official record
Conditions
Anxiety and Fear
Interventions
Interoceptive Aversive Memory Reactivation, Cannabidiol (CBD)-Rich Broad Spectrum Hemp Extract Oil, Placebo Oil
Behavioral · Dietary Supplement
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 65 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 18, 2022 · Synced Sep 2, 2026, 5:53 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 2, 2026, 5:53 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 2, 2026, 5:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Variable Dead Space Rebreathing Device to Treat Sleep Apnea

NCT03552133
View directory record Official record
Conditions
Sleep Apnea, Obstructive, Sleep Apnea, Central
Interventions
Smart CO2
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 17, 2019 · Synced Sep 2, 2026, 5:53 PM EDT
Completed No phase listed Observational

Prediction of Brain Injury in Premature Infants

NCT02814383
View directory record Official record
Conditions
Intraventricular Hemorrhage, Periventricular Leukomalacia, Brain Injury, Extreme Prematurity
Interventions
Brain Monitoring Platform
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
0 Hours to 12 Hours
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2025
U.S. locations
3
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 2, 2026, 5:53 PM EDT
Withdrawn Not applicable Interventional

Sleep Ventilation for Patients With Advanced Hypercapnic COPD

NCT04210050
View directory record Official record
Conditions
COPD
Interventions
Home noninvasive nocturnal ventilation with Breas VIVO 50 home ventilator or newer model as available, Breas Medical., Arterial blood gas (ABG) and serum bicarbonate level, Overnight home oximetry and transcutaneous CO2 monitoring
Device · Diagnostic Test
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 3, 2023 · Synced Sep 2, 2026, 5:53 PM EDT
Active, not recruiting Not applicable Interventional

Stress Management Program

NCT06526585
View directory record Official record
Conditions
Stress, Anxiety
Interventions
Cyclic Sighing Breathing, Box Breathing, Hypnosis, Audiobook
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 2, 2026, 5:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Wearing Masks on End-tidal Carbon Dioxide and Pulse Oximetry

NCT05114993
View directory record Official record
Conditions
Carbon Dioxide
Interventions
wearing a disposable surgical mask
Device
Lead sponsor
Patrick Brooks
Other
Eligibility
2 Years to 80 Years
Enrollment
119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Springfield, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 23, 2022 · Synced Sep 2, 2026, 5:53 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 2, 2026, 5:53 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effect of Mode of Transport Ventilation on Respiratory Parameters After Cardiac Surgery

NCT02740075
View directory record Official record
Conditions
Complication of Ventilation Therapy
Interventions
Not listed
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Sep 2, 2026, 5:53 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

ChroniSense Polso Wrist Worn Respiration Rate Validation Study

NCT03750344
View directory record Official record
Conditions
Respiratory Rate
Interventions
Diagnostic test
Device
Lead sponsor
ChroniSense Medical Ltd.
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Louisville, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 2, 2026, 5:53 PM EDT
Completed Not applicable Interventional

Pilot Study of Physiological Effect of High-Flow Nasal Cannula on Respiratory Pattern and Work of Breathing

NCT02514798
View directory record Official record
Conditions
COPD
Interventions
Esophageal and gastric balloons, Respiratory Inductance Plethysmography (RIP) system, Sentec transcutaneous monitoring system, High-flow humidified nasal oxygen delivery system, CPAP (Positive Control)
Other · Device
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 9, 2022 · Synced Sep 2, 2026, 5:53 PM EDT