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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Difficulty Breathing Clear all
Withdrawn No phase listed Observational Accepts healthy volunteers

T-Cell Mitochondrial Respiration Response to Ketone Monoester Supplement in Healthy Volunteers and COVID-19

NCT05798260
View directory record Official record
Conditions
COVID-19 Acute Respiratory Distress Syndrome
Interventions
Agilent Seahorse XF Cell Mito Stress Test
Diagnostic Test
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 2, 2024 · Synced Sep 21, 2026, 5:20 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 Aug 3, 2026 · Synced Sep 21, 2026, 5:20 AM EDT
Recruiting Not applicable Interventional

Adaptive Coping Skills Training to Improve Psychological Distress Among Cardiorespiratory Failure Survivors

NCT06538246
View directory record Official record
Conditions
Depression, Anxiety, Post-traumatic Stress Disorder, Stress, Worries; Pain or Disability, Breath Shortness
Interventions
Blueprint, Education program
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Sep 21, 2026, 5:20 AM EDT
Enrolling by invitation Not applicable Interventional

Personalized Ventilator Settings for Patients on ECMO

NCT07673250
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome (ARDS), Extracorporeal Membrane Oxygenation, Respiratory Failure Patients Treated With ECMO, Respiratory Failure, ICU, Ventilator Induced Lung Injury
Interventions
Personalized Positive End-Expiratory Pressure (PEEP)
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 21, 2026, 5:20 AM EDT
Completed Phase 2 Interventional Results available

Study to Evaluate the Safety and Efficacy of ATYR1923 (Efzofitimod) In Participants With Severe Pneumonia Related to COVID-19

NCT04412668
View directory record Official record
Conditions
SARS-CoV-2 (COVID-19) Severe Pneumonia
Interventions
Efzofitimod 1 mg/kg, Efzofitimod 3 mg/kg, Placebo
Drug
Lead sponsor
aTyr Pharma, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
8
States / cities
Birmingham, Alabama • Washington D.C., District of Columbia • Miami, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2023 · Synced Sep 21, 2026, 5:20 AM EDT
Terminated Phase 1Phase 2 Interventional

RAPA-501-Allo Therapy of COVID-19-ARDS

NCT04482699
View directory record Official record
Conditions
Severe COVID-19 Disease
Interventions
RAPA-501-Allo off-the-shelf Therapy of COVID-19, Placebo
Biological · Other
Lead sponsor
Rapa Therapeutics LLC
Industry
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 10, 2021 · Synced Sep 21, 2026, 5:20 AM EDT
Active, not recruiting No phase listed Observational

Long Term Follow up of Children Enrolled in the REDvent Study

NCT03709199
View directory record Official record
Conditions
Respiratory Distress Syndrome, Adult, Ventilator-Induced Lung Injury, Neurocognitive Dysfunction, Quality of Life, Respiration Disorders
Interventions
Ventilation Inhomogeneity, Diaphragm Ultrasound, Respiratory Inductance Plethysmography, Spirometry, Functional Residual Capacity, MIP/MEP, 6 minute walk test, Neurocognitive Testing, Emotional Health Assessment, Health Related Quality of Life, Functional Status, Respiratory Status Questionnaire
Diagnostic Test
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
1 Month to 18 Years
Enrollment
176 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 16, 2025 · Synced Sep 21, 2026, 5:20 AM EDT
Completed No phase listed Observational

Modifying Exercise for the COPD Patient

NCT02143206
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Arthritis, Pain
Interventions
Not listed
Lead sponsor
Angela N Fellner PhD CCRP
Other
Eligibility
18 Years to 99 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 21, 2018 · Synced Sep 21, 2026, 5:20 AM EDT
Not listed Phase 1Phase 2 Interventional

The Use of Exosomes for the Treatment of Acute Respiratory Distress Syndrome or Novel Coronavirus Pneumonia Caused by COVID-19

NCT04798716
View directory record Official record
Conditions
Covid19, Novel Coronavirus Pneumonia, Acute Respiratory Distress Syndrome
Interventions
MSC-exosomes delivered intravenously every other day on an escalating dose: (2:4:8), MSC-exosomes delivered intravenously every other day on an escalating dose (8:4:8), MSC-exosomes delivered intravenously every other day (8:8:8)
Drug
Lead sponsor
AVEM HealthCare
Industry
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Panorama City, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2022 · Synced Sep 21, 2026, 5:20 AM EDT
Not listed Not applicable Interventional

Monitoring and Self-management of Sleep Fatigue and Dyspnea

NCT04434716
View directory record Official record
Conditions
Heart Failure Patients
Interventions
Feasibility of wearing a Readiband to monitor Sleep and Fatigue
Device
Lead sponsor
University of Massachusetts, Amherst
Other
Eligibility
30 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Amherst, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 16, 2020 · Synced Sep 21, 2026, 5:20 AM EDT
Terminated Phase 3 Interventional Results available

A Study of Brexanolone for Acute Respiratory Distress Syndrome (ARDS) Due to Coronavirus Disease 2019 (COVID-19)

NCT04537806
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, COVID-19
Interventions
Brexanolone, Placebo
Drug
Lead sponsor
Sage Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
9
States / cities
Fresno, California • Augusta, Georgia • Boston, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Sep 21, 2026, 5:20 AM EDT
Completed Phase 1 Interventional

Poly-ICLC to Prevent Respiratory Viral Infections A Safety Study

NCT00646152
View directory record Official record
Conditions
Influenza, Severe Acute Respiratory Distress Syndrome, Smallpox, Ebola, Unknown Respiratory Viruses
Interventions
Poly-ICLC
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 4, 2018 · Synced Sep 21, 2026, 5:20 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Effect of Eleclazine (GS-6615) on Exercise Capacity in Subjects With Symptomatic Hypertrophic Cardiomyopathy

NCT02291237
View directory record Official record
Conditions
Hypertrophic Cardiomyopathy
Interventions
Eleclazine, Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
26
States / cities
Los Angeles, California • Stanford, California • New Haven, Connecticut + 16 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2018 · Synced Sep 21, 2026, 5:20 AM EDT
Terminated Not applicable Interventional

Stress Index to Individualize Mechanical Ventilation in ARDS

NCT02871102
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome
Interventions
Recruitment Maneuver with PEEP and Tidal Volume Optimization
Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 6, 2018 · Synced Sep 21, 2026, 5:20 AM EDT
Recruiting Phase 3 Interventional

Efficacy and Safety of Tozorakimab in Patients Hospitalised for Viral Lung Infection Requiring Supplemental Oxygen

NCT05624450
View directory record Official record
Conditions
Viral Lung Infection and Acute Respiratory Failure
Interventions
Tozorakimab, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
3,527 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
74
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 66 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 21, 2026, 5:20 AM EDT
Recruiting Phase 4 Interventional

Non Inferiority Trial Investigating Surfactants Administered Via MIST

NCT06074380
View directory record Official record
Conditions
Respiratory Distress Syndrome
Interventions
MIST surfactant
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
Up to 48 Hours
Enrollment
262 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Sep 21, 2026, 5:20 AM EDT
Recruiting Not applicable Interventional

A Validation Study to Evaluate the Performance of Caption Health Lung Guidance and Interpretation

NCT05992324
View directory record Official record
Conditions
Shortness of Breath
Interventions
Caption LungAI
Device
Lead sponsor
Caption Health, Inc.
Industry
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
4
States / cities
New Haven, Connecticut • Chicago, Illinois • Greensboro, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Sep 21, 2026, 5:20 AM EDT
Recruiting Phase 2 Interventional

Phase 2a Multiple Ascending Dose Study in Hospitalized Patients With Pneumonia.

NCT05123755
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Viral or Bacterial Infections, Pneumonia, Pneumonia, Viral, Respiratory Infection, COVID-19 Acute Respiratory Distress Syndrome
Interventions
AV-001 Injection, AV-001 Placebo Injection
Drug
Lead sponsor
Vasomune Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
5
States / cities
Newport Beach, California • Denver, Colorado • Hyattsville, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 21, 2026, 5:20 AM EDT
Completed No phase listed Observational

Autonomic Monitoring in Neurocardiogenic Syncope

NCT05907018
View directory record Official record
Conditions
Syncope, Chest Pain, Dyspnea
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
7 Years to 24 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Sep 21, 2026, 5:20 AM EDT
Completed Not applicable Interventional

Randomized Controlled Trial of Mind-Body Breathing Therapy (in Chronic Obstructive Pulmonary Disease) To Improve Palliation of Dyspnea and Health-Related Quality of Life

NCT00243282
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Relaxation Response (instruction, pocket practice card prov), Mindfulness training using model developed from UMass
Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 20, 2009 · Synced Sep 21, 2026, 5:20 AM EDT
Withdrawn Not applicable Interventional

Oscillatory Versus Non-Oscillatory Nasal Continuous Airway Pressure Neonatal Respiratory Support

NCT01277874
View directory record Official record
Conditions
Respiratory Distress Syndrome, Prematurity
Interventions
Nasal CPAP, Oscillatory NCPAP
Device
Lead sponsor
University of Utah
Other
Eligibility
Up to 28 Days
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
3
States / cities
Madera, California • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 21, 2026, 5:20 AM EDT
Completed Phase 4 Interventional

Inhaled Iloprost for Sarcoidosis-associated Pulmonary Hypertension

NCT00403650
View directory record Official record
Conditions
Sarcoidosis, Pulmonary Arterial Hypertension
Interventions
Iloprost
Drug
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years to 90 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 11, 2013 · Synced Sep 21, 2026, 5:20 AM EDT
Terminated Phase 2 Interventional Results available

Study of Varespladib in Patients Hospitalized With Severe COVID-19

NCT04969991
View directory record Official record
Conditions
Coronavirus Disease 2019, Disease Caused by Severe Acute Respiratory Syndrome Coronavirus 2
Interventions
Varespladib, Placebo
Drug
Lead sponsor
Ophirex, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
7
States / cities
Ventura, California • Miami, Florida • Munster, Indiana + 3 more
Source: ClinicalTrials.gov public record
Updated May 14, 2025 · Synced Sep 21, 2026, 5:20 AM EDT
Completed Phase 1 Interventional

Carbon Monoxide to Prevent Lung Inflammation

NCT00094406
View directory record Official record
Conditions
Respiratory Distress Syndrome, Adult
Interventions
Bronchoscopy, Bronchoalveolar lavage, Endotoxin, Carbon Monoxide
Procedure · Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 40 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Sep 21, 2026, 5:20 AM EDT