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 8, 2026, 10:08 PM EDT

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

Showing 1–23 of 23 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Nitrous Oxide arm Clear all
Terminated Not applicable Interventional

Prime Time for Superficial Femoral Artery (SFA) - The SFA Study

NCT00902317
View directory record Official record
Conditions
Peripheral Vascular Disease
Interventions
Cryoplasty (PolarCath peripheral balloon catheter), Laser Angioplasty (Spectranetics), SilverHawk Atherectomy, Viabahn Endograft, Angioplasty/Stent (Guidant "Absolute" stent)
Procedure · Device
Lead sponsor
Arizona Heart Institute
Other
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated May 14, 2009 · Synced Sep 8, 2026, 10:08 PM EDT
Active, not recruiting Not applicable Interventional

Cryoneurolysis for Painful Diabetic Neuropathy of the Foot

NCT06646731
View directory record Official record
Conditions
Painful Diabetic Peripheral Neuropathy (PDPN)
Interventions
cryoneurolysis, sham cryoneurolysis
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 8, 2026, 10:08 PM EDT
Active, not recruiting Not applicable Interventional

Cryoneurolysis Versus Radiofrequency Ablation for the Treatment of Chronic Low Back Pain

NCT06804551
View directory record Official record
Conditions
Chronic Low-back Pain
Interventions
iovera system, Radiofrequency ablation alone
Device
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 8, 2026, 10:08 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Comparing Sedara to Butorphanol in Early Labor

NCT01636999
View directory record Official record
Conditions
Labor Pain
Interventions
50% Nitrous Oxide/50% Oxygen
Drug
Lead sponsor
West Penn Allegheny Health System
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 4, 2020 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nitrous Oxide for Pain Management of Intrauterine Device (IUD) Insertion

NCT02391714
View directory record Official record
Conditions
Contraception
Interventions
IUD insertion, Povidone-Iodine, Chlorhexidine, Oxygen, Nitrous oxide
Procedure · Drug · Other
Lead sponsor
University of New Mexico
Other
Eligibility
12 Years and older · Female only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Feb 2, 2016 · Synced Sep 8, 2026, 10:08 PM EDT
Withdrawn Phase 3 Interventional Accepts healthy volunteers

Intracervical Balloon Placement With Nitrous Oxide Administration

NCT06498908
View directory record Official record
Conditions
Labor Pain, Induced; Birth
Interventions
Nitrous oxide, Oxygen
Drug
Lead sponsor
Olivia Sher
Other
Eligibility
18 Years to 45 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nitrous Oxide Use in Minor Procedures

NCT01911351
View directory record Official record
Conditions
Laceration, Abscess
Interventions
Nitrous Oxide
Drug
Lead sponsor
New York City Health and Hospitals Corporation
Other
Eligibility
3 Years to 12 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 10, 2016 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Nitrous Oxide Neuroimaging

NCT06702631
View directory record Official record
Conditions
Anesthesia, Pain, Amnesia
Interventions
Nitrous oxide, Peripheral Nerve Stimulation
Drug · Device
Lead sponsor
Keith M Vogt
Other
Eligibility
18 Years to 59 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Nitrous Oxide (N2O) on Intraocular Pressure in Healthy Volunteers

NCT00967694
View directory record Official record
Conditions
Glaucoma, Sedation
Interventions
Nitrous oxide
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 22, 2014 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Phase 2 Interventional Results available

Analgesic Effect of IV Acetaminophen in Tonsillectomies

NCT01691690
View directory record Official record
Conditions
Adenotonsillitis, Tonsillitis
Interventions
Acetaminophen (paracetamol), Normal Saline Flush, Midazolam, Sevoflurane, Nitrous Oxide/Oxygen, Propofol, Morphine, Ondansetron, Dexamethasone
Drug
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
2 Years to 9 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 5, 2017 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Phase 2 Interventional Results available

Exploring Nitrous Oxide Effects for Post Traumatic Stress Disorder (PTSD)

NCT03375294
View directory record Official record
Conditions
Post Traumatic Stress Disorder
Interventions
Nitrous Oxide
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 80 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2020 · Synced Sep 8, 2026, 10:08 PM EDT
Not listed Early Phase 1 Interventional

Inhalational Anesthesia vs TIVA in Endoscopic Tympanoplasty

NCT05993039
View directory record Official record
Conditions
Perforated Eardrum
Interventions
Isoflurane Inhalant Product, Sevoflurane inhalant product, Propofol injection, Remifentanil Injection
Drug
Lead sponsor
Our Lady of the Lake Hospital
Other
Eligibility
0 Years to 100 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Oct 31, 2023 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nitrous Oxide for Pain Management During In-office Transcervical Sterilization

NCT02312739
View directory record Official record
Conditions
Contraception, Inhalation of Nitrous Oxide
Interventions
In-office Transcervical Sterilization (Essure®), Standard Oral pain medications, Intramuscular Ketorolac, Placebo pills, Oxygen, Nitrous Oxide
Procedure · Drug · Other
Lead sponsor
University of New Mexico
Other
Eligibility
21 Years and older · Female only
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Jul 5, 2016 · Synced Sep 8, 2026, 10:08 PM EDT
Terminated Phase 2 Interventional Results available

Nitrous Oxide for PTSD

NCT04378426
View directory record Official record
Conditions
PTSD
Interventions
Nitrous Oxide, Midazolam, Nitrogen, Oxygen, Saline
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Not applicable Interventional Results available

Adjunctive Nitrous Oxide During Emergency Department Propofol Sedation in Adults

NCT02410707
View directory record Official record
Conditions
Joint Dislocation, Perianal Abscess, Abscess
Interventions
Nitrous Oxide arm, Propofol, Oxygen
Drug
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 7, 2020 · Synced Sep 8, 2026, 10:08 PM EDT
Withdrawn Phase 2Phase 3 Interventional Accepts healthy volunteers

Nitrous Oxide for Pain Management During IUD Insertion in Nulliparous Adolescent Women

NCT04089852
View directory record Official record
Conditions
Contraceptive Devices, Long-Acting Reversible Contraception, Analgesia, Adolescent Health, Gynecology
Interventions
Nitrous oxide gas for inhalation, Oxygen Gas for Inhalation
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
14 Years to 24 Years · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 15, 2022 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Not applicable Interventional Results available

Cryoneurolysis for Facet Mediated Chronic Low Back Pain

NCT06016127
View directory record Official record
Conditions
Low Back Pain, Facet Joint Pain
Interventions
iovera system, Radiofrequency ablation
Device
Lead sponsor
Medical Pain Management Services, PLLC
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Saratoga Springs, New York
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Not applicable Interventional Results available

Inhaled Nitrous Oxide for the Prevention of Emergence Reaction During Ketamine Administration in Adults, a Pilot Study

NCT02145169
View directory record Official record
Conditions
Emergence Reaction, Procedural Sedation
Interventions
Inhaled Nitrous Oxide
Drug
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 18, 2020 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparison of Triazolam and Midazolam for Anxiolysis During Dental Treatment in the Pediatric Patient

NCT03360123
View directory record Official record
Conditions
Dental Anxiety
Interventions
Midazolam Hydrochloride 2Mg/mL Syrup, Triazolam 0.125 MG
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
7 Years to 17 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 18, 2018 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Compare Ultrasound Assisted Cold Therapy and Lidocaine Injection to Treat Morton's Neuroma

NCT02838758
View directory record Official record
Conditions
Intermetatarsal Neuroma
Interventions
Cryoablation, Lidocaine, Saline
Device · Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 80 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 5, 2018 · Synced Sep 8, 2026, 10:08 PM EDT
Recruiting Phase 2 Interventional

Efficacy of Nitrous Oxide in OCD: Pilot Study

NCT03826693
View directory record Official record
Conditions
Obsessive-Compulsive Disorder
Interventions
Nitrous Oxide, Nitrogen
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Phase 4 Interventional Results available

Rib Fracture Analgesia Using Cryoanalgesia

NCT04198662
View directory record Official record
Conditions
Traumatic Rib Fracture(s)
Interventions
Cryoneurolysis with a Painblocker (Epimed International, Farmers Branch, Texas), Intercostal nerve block ropivacaine with epinephrine, Sham cryoneurolysis with a Painblocker, Placebo intercostal nerve block with normal saline
Device · Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Oct 9, 2024 · Synced Sep 8, 2026, 10:08 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Pilot Study to Assess Effects of Self-Administered Nitrous Oxide (SANO) on Urodynamic Study (UDS) Parameters

NCT05883332
View directory record Official record
Conditions
Lower Urinary Tract Symptoms
Interventions
Self-Administered Nitrous Oxide, Oxygen
Drug · Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
21 Years to 85 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 8, 2026, 10:08 PM EDT