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ClinicalTrials.gov public records Last synced Oct 30, 2026, 2:21 AM EDT

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

Showing 649–672 of 3,150 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: RESP Clear all
Withdrawn No phase listed Observational

Evaluation and Treatment of Severe Acute Respiratory Syndrome (SARS)

NCT00073086
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 30, 2026, 2:21 AM EDT
Recruiting No phase listed Observational

Identifying Cerebral Hemodynamic Patterns in Mood Disorders and Mild Cognitive Impairment: A Functional Near-Infrared Spectroscopy (fNIRS) Study

NCT06897670
View directory record Official record
Conditions
Major Depressive Disorder, Bipolar Disorder, Mild Cognitive Impairment
Interventions
Observational assessment using functional near-infrared spectroscopy (fNIRS), a noninvasive, portable brain imaging tool that measures changes in brain blood flow and oxygen levels.
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
200 participants
Timeline
2025 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 30, 2026, 2:21 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Study of Disrupted Sleep in Somali Americans

NCT05411029
View directory record Official record
Conditions
Hypertension, Sleep Disorder, Healthy
Interventions
24 hour blood pressure (BP) monitoring, Polysomnography
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Oct 30, 2026, 2:21 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Risk Factors for Post-Operative Respiratory Complications in Patients at Risk for OSA

NCT02729077
View directory record Official record
Conditions
Respiratory Complications
Interventions
Pulse Oximetry
Device
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 75 Years
Enrollment
324 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 24, 2021 · Synced Oct 30, 2026, 2:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study to Evaluate the Efficacy of EZC Pak in Adults With Upper Respiratory Infection (URI)

NCT04943575
View directory record Official record
Conditions
Common Cold
Interventions
EZC Pak, EZC Pak +D, Placebo
Dietary Supplement
Lead sponsor
PPC Pharmaceuticals
Industry
Eligibility
18 Years to 85 Years
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Apr 7, 2022 · Synced Oct 30, 2026, 2:21 AM EDT
Active, not recruiting Not applicable Interventional

Breathing Device in Postural Orthostatic Tachycardia Syndrome (POTS)

NCT00962728
View directory record Official record
Conditions
Postural Tachycardia Syndrome, Postural Orthostatic Tachycardia Syndrome
Interventions
Inspiratory Threshold Device (Res-Q-Gard ITD), Sham Inspiratory Threshold Device
Device
Lead sponsor
Alfredo Gamboa
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Oct 30, 2026, 2:21 AM EDT
Completed No phase listed Observational

A Study to Understand How the Use of Paxlovid Affected Healthcare Use in People With Pre-existing Conditions.

NCT07090486
View directory record Official record
Conditions
COVID-19
Interventions
nirmatrelvir-ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
14,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Oct 30, 2026, 2:21 AM EDT
Withdrawn Phase 1 Interventional

Intermediate IND Severe Illness COVID-19 CP

NCT04411602
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome, COVID
Interventions
SARS-CoV-2 plasma
Drug
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Novi, Michigan • Southfield, Michigan • Warren, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 30, 2026, 2:21 AM EDT
Recruiting Phase 2 Interventional

Structured Personalized Oxygen and Supportive Therapies for Dyspnea in Oncology

NCT06336642
View directory record Official record
Conditions
Dyspnea
Interventions
SPOT-ON Early Start, SPOT-ON Delayed Start
Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2032
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 30, 2026, 2:21 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Effects of E-cigarettes (ECIGs) on Pulmonary Inflammation and Behavior in HIV Infected Smokers

NCT02848586
View directory record Official record
Conditions
Lung Inflammation, HIV Seropositivity
Interventions
ECIGS, mobile contingency management (mCM), Usual brand
Other · Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 64 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 11, 2023 · Synced Oct 30, 2026, 2:21 AM EDT
Completed No phase listed Observational

Neurotrophin Expression in Infants as a Predictor of Respiratory and Neurodevelopmental Outcomes

NCT03373539
View directory record Official record
Conditions
Bronchopulmonary Dysplasia, Chronic Lung Disease
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
1 Day to 4 Months
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 26, 2025 · Synced Oct 30, 2026, 2:21 AM EDT
Completed Not applicable Interventional Results available

Home-Based Diagnosis and Management of Sleep-Related Breathing Disorders in Spinal Cord Injury

NCT01882257
View directory record Official record
Conditions
Obstructive Sleep Apnea, Hypercapnia, Spinal Cord Injury
Interventions
BiPAP, BiPAP/AVAPS (Phillips Respironics)
Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Oct 30, 2026, 2:21 AM EDT
Completed Phase 3 Interventional Results available

Hydroxychloroquine Monotherapy and in Combination With Azithromycin in Patients With Moderate and Severe COVID-19 Disease

NCT04358081
View directory record Official record
Conditions
Covid-19
Interventions
HCQ, HCQ+AZT, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
7
States / cities
Fullerton, California • Los Angeles, California • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 11, 2021 · Synced Oct 30, 2026, 2:21 AM EDT
Completed Not applicable Interventional

Intraoperative Protective Ventilation and Postoperative Pulmonary Complications

NCT02671721
View directory record Official record
Conditions
Complication of Ventilation Therapy, Postoperative Respiratory Complications
Interventions
Maximal Compliance, Transpulmonary Pressure
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 100 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 8, 2019 · Synced Oct 30, 2026, 2:21 AM EDT
Completed No phase listed Observational

The Effects of Drug Candidate CS1 on Lung Structure and Function Utilizing FRI

NCT06907693
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
CT Pulmonary Angiography Scan
Diagnostic Test
Lead sponsor
Prisma Health-Upstate
Other
Eligibility
Not listed
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 30, 2026, 2:21 AM EDT
Completed Not applicable Interventional Results available

Trial to Reduce Antimicrobial Use In Nursing Home Residents With Alzheimer's Disease and Other Dementias

NCT03244917
View directory record Official record
Conditions
Dementia, Infection, Bacterial
Interventions
TRAIN-AD
Behavioral
Lead sponsor
Hebrew SeniorLife
Other
Eligibility
21 Years and older
Enrollment
430 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 10, 2021 · Synced Oct 30, 2026, 2:21 AM EDT
Completed Not applicable Interventional

ARDSnet Protocol vs. Open Lung Approach in ARDS

NCT00431158
View directory record Official record
Conditions
Respiratory Distress Syndrome, Adult
Interventions
Different Mechanical Ventilation Protocols
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 18, 2014 · Synced Oct 30, 2026, 2:21 AM EDT
Completed Not applicable Interventional Results available

Nebulized 3% Hypertonic Saline in the Treatment of Acute Bronchiolitis

NCT02029040
View directory record Official record
Conditions
Acute Bronchiolitis
Interventions
3% Hypertonic Saline, 0.9 % normal saline
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
2 Months to 12 Months
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 25, 2019 · Synced Oct 30, 2026, 2:21 AM EDT
Terminated Not applicable Interventional Results available

Study Assessing Vagus Nerve Stimulation in CoViD-19 Respiratory Symptoms

NCT04382391
View directory record Official record
Conditions
COVID, Corona Virus Infection, Respiratory Failure, Respiratory Distress Syndrome, Adult, ARDS, Human, SARS (Severe Acute Respiratory Syndrome)
Interventions
gammaCore® Sapphire (non-invasive vagus nerve stimulator), Standard of care therapies
Device · Other
Lead sponsor
Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 1, 2024 · Synced Oct 30, 2026, 2:21 AM EDT
Recruiting Not applicable Interventional

Home-based Respiratory Muscle Training for Minimizing Side Effects in Patients Undergoing Treatment for Cancer

NCT05787834
View directory record Official record
Conditions
Breast Carcinoma, Head and Neck Cancer, Lung Cancer
Interventions
Best Practice, Medical Device Usage and Evaluation, Respiratory Muscle Training, Survey Administration
Other · Procedure
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 30, 2026, 2:21 AM EDT
Completed No phase listed Observational

Observational Study Of An Electronic Questionnaire In Patients With Chronic Obstructive Pulmonary Disease (COPD)

NCT00259909
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive, Infections, Bacterial
Interventions
GSK questionnaire, St. George's Respiratory Questionnaire, Acute Short Form 12 version 2, Global Efficacy questionnaire
Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years and older
Enrollment
259 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
79
States / cities
Birmingham, Alabama • Hueytown, Alabama • Jasper, Alabama + 69 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2017 · Synced Oct 30, 2026, 2:21 AM EDT
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 17, 2025 · Synced Oct 30, 2026, 2:21 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Bronchoscopy Study for Severe Asthma

NCT01745809
View directory record Official record
Conditions
Severe Persistent Asthma
Interventions
Bronchoscopy
Procedure
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 1, 2015 · Synced Oct 30, 2026, 2:21 AM EDT
Terminated Phase 2 Interventional

A Study to Evaluate OP-101 (Dendrimer N-acetyl-cysteine) in Severe Coronavirus Disease 2019 (COVID-19) Patients

NCT04458298
View directory record Official record
Conditions
COVID-19
Interventions
OP-101, Placebo
Drug
Lead sponsor
Ashvattha Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
8
States / cities
Loma Linda, California • Fort Lauderdale, Florida • Jacksonville, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2023 · Synced Oct 30, 2026, 2:21 AM EDT