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ClinicalTrials.gov public records Last synced Nov 15, 2026, 7:50 AM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Showing 241–264 of 319 matching trials from the live ClinicalTrials.gov search.

Filters: Condition: Respiratory Illness Clear all

Conditions: Spectrum of Altitude-associated Neurologic Forms of Altitude
Interventions: Ibuprofen 600mg orally three times daily; Drug
Lead sponsor: Naval Health Research Center; Federal
Eligibility: 18 Years to 65 Years
Enrollment: 300 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2012
U.S. locations: 1
States / cities: Bridgeport, California

Conditions: Respiratory Viral Infections, Respiratory Syncytial Virus Infections, Parainfluenza Virus 3, Human
Interventions: MEDI-534; Biological
Lead sponsor: MedImmune LLC; Industry
Eligibility: 6 Months to 23 Months
Enrollment: 49 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2007 – 2010
U.S. locations: 30
States / cities: Conway, Arkansas • Little Rock, Arkansas • Aurora, Colorado + 25 more

Conditions: Decompression Sickness, Acute Mountain Sickness
Interventions: Pressure, Breathing Gas; Other
Lead sponsor: Duke University; Other
Eligibility: 18 Years to 40 Years
Enrollment: 103 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2018 – 2021
U.S. locations: 1
States / cities: Durham, North Carolina

Conditions: Covid-19, Critical Illness, Attitude of Health Personnel, Attitude to Health, Health Behavior, Health Care Utilization
Interventions: Brief educational video; Behavioral
Lead sponsor: University of California, Los Angeles; Other
Eligibility: 18 Years and older
Enrollment: 1,971 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2020 – 2021
U.S. locations: 1
States / cities: Los Angeles, California

Conditions: Acute Respiratory Viral Infection
Interventions: No Intervention; Other
Lead sponsor: Janssen Research & Development, LLC; Industry
Eligibility: 18 Years and older
Enrollment: 140 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2024
U.S. locations: 3
States / cities: Palo Alto, California • Detroit, Michigan • Seattle, Washington

Conditions: Asthma, Wheezing
Interventions: Azithromycin, Prednisolone, Placebo Azithromycin, Placebo Prednisolone; Drug · Other
Lead sponsor: Milton S. Hershey Medical Center; Other
Eligibility: 12 Months to 71 Months
Enrollment: 607 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2015
U.S. locations: 16
States / cities: Tucson, Arizona • Oakland, California • San Francisco, California + 11 more

Conditions: Influenza, Influenza-like Illness
Interventions: adjuvanted trivalent influenza vaccine, trivalent influenza vaccine; Biological
Lead sponsor: Insight Therapeutics, LLC; Other
Eligibility: 65 Years and older
Enrollment: 823 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2023
U.S. locations: 1
States / cities: Norfolk, Virginia

Conditions: Acute Mountain Sickness
Interventions: Ibuprofen, Acetazolamide; Drug
Lead sponsor: Grant S Lipman; Other
Eligibility: 18 Years to 65 Years
Enrollment: 92 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2017
U.S. locations: 1
States / cities: Bishop, California

Conditions: Critical Illness, Corona Virus Infection, Respiratory Failure, Covid-19
Interventions: Quality of Life, Impact Event Score, Hospital anxiety and depression scale; Other
Lead sponsor: University of Chicago; Other
Eligibility: 18 Years and older
Enrollment: 500 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2026
U.S. locations: 1
States / cities: Chicago, Illinois

Conditions: Asthma
Interventions: Not listed
Lead sponsor: Arizona State University; Other
Eligibility: 5 Years to 12 Years
Enrollment: 534 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2014
U.S. locations: 4
States / cities: Phoenix, Arizona • Scottsdale, Arizona • The Bronx, New York

Conditions: Critical Illness, Wounds and Injury, Disease Attributes, Pathologic Processes
Interventions: Targeting Normoxemia (SpO2 90-96%; PaO2 60-100 mmHg); Other
Lead sponsor: University of Colorado, Denver; Other
Eligibility: 18 Years to 120 Years
Enrollment: 2,000 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2025
U.S. locations: 6
States / cities: Birmingham, Alabama • Aurora, Colorado • Cincinnati, Ohio + 3 more

Conditions: Asthma, COPD, Chronic Obstructive Pulmonary Disease
Interventions: Blood draw, Urine, Lung function measurements, Fractional Exhaled Nitric Oxide (FENO); Procedure
Lead sponsor: AstraZeneca; Industry
Eligibility: 12 Years to 130 Years
Enrollment: 12,255 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2023
U.S. locations: 40
States / cities: Loma Linda, California • Long Beach, California • Roseville, California + 33 more

Conditions: Hypoxia, Altitude
Interventions: Cetirizine, Placebo oral capsule, Hypoxia; Drug · Other
Lead sponsor: Indiana University; Other
Eligibility: 18 Years to 35 Years
Enrollment: 13 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2017 – 2018
U.S. locations: 1
States / cities: Bloomington, Indiana

Conditions: Critical Illness, Acute Respiratory Failure
Interventions: Olimel (5.7%E / N9E); Drug
Lead sponsor: Clinical Evaluation Research Unit at Kingston General Hospital; Other
Eligibility: 18 Years and older
Enrollment: 125 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2015
U.S. locations: 7
States / cities: Boulder, Colorado • St Louis, Missouri • Cleveland, Ohio + 3 more

Conditions: Respiratory Syncytial Virus, Chronic Obstructive Pulmonary Disease, Congestive Heart Failure
Interventions: Not listed
Lead sponsor: MedImmune LLC; Industry
Eligibility: 50 Years and older
Enrollment: 476 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2014
U.S. locations: 21
States / cities: Birmingham, Alabama • Fort Smith, Arkansas • Denver, Colorado + 18 more

Conditions: Acute Respiratory Infection, Coronavirus Infection, Influenza
Interventions: Not listed
Lead sponsor: Apple Inc.; Industry
Eligibility: 22 Years and older
Enrollment: 108 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2021
U.S. locations: 1
States / cities: Seattle, Washington

Conditions: Lung Carcinoma, Metastatic Lung Carcinoma, Stage IV Lung Cancer AJCC v8
Interventions: Best Practice, Questionnaire Administration; Other
Lead sponsor: M.D. Anderson Cancer Center; Other
Eligibility: 18 Years and older
Enrollment: 100 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2027
U.S. locations: 1
States / cities: Houston, Texas

Conditions: Altitude Hypoxia
Interventions: Simulated altitude, Placebo simulated altitude; Other
Lead sponsor: Mayo Clinic; Other
Eligibility: 18 Years to 70 Years
Enrollment: 71 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2019 – 2023
U.S. locations: 1
States / cities: Scottsdale, Arizona

Conditions: Critical Illness, Chronic Disease, Terminal Care, Palliative Care, Communication, Advance Care Planning, Neoplasm Metastasis, Lung Neoplasms, Pulmonary Disease, Chronic Obstructive, Heart Failure, End Stage Liver Disease, Kidney Failure, Chronic
Interventions: Communication Feedback Form for Patients with Serious Illness; Behavioral
Lead sponsor: University of Washington; Other
Eligibility: 18 Years and older
Enrollment: 817 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2016
U.S. locations: 6
States / cities: Renton, Washington • Seattle, Washington

Conditions: Covid19, Critical Illness, High Intensity Interval Training, ICU, Intensive Care Units, Fitness Trackers
Interventions: REmotely Monitored, Mhealth (REMM) supported High Intensity Interval Training (HIIT), Comparator; Behavioral · Other
Lead sponsor: Duke University; Other
Eligibility: 18 Years and older
Enrollment: 13 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2022 – 2023
U.S. locations: 2
States / cities: Durham, North Carolina • Nashville, Tennessee

Conditions: Mountain Sickness
Interventions: Quercetin, Nifedipine extended release, Methazolamide, Metformin, Placebo, Nitrite; Dietary Supplement · Drug
Lead sponsor: University of Colorado, Denver; Other
Eligibility: 18 Years to 30 Years · Male only
Enrollment: 148 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2015 – 2016
U.S. locations: 1
States / cities: Alma, Michigan

Conditions: SARS-CoV-2 Acute Respiratory Disease, Myalgic Encephalomyelitis, Chronic Fatigue Syndrome, Post-acute Sequelae of SARS-COV-2 Infection, Post COVID-19 Condition
Interventions: Extension for Community Healthcare Outcomes; Other
Lead sponsor: Family Health Centers of San Diego; Other
Eligibility: 18 Years and older
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2025
U.S. locations: 1
States / cities: San Diego, California

Conditions: Acute Respiratory Failure
Interventions: Smaller endotracheal tube, Larger endotracheal tube; Other
Lead sponsor: Vanderbilt University Medical Center; Other
Eligibility: 18 Years and older
Enrollment: 3,180 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2029
U.S. locations: 7
States / cities: Birmingham, Alabama • Denver, Colorado • Minneapolis, Minnesota + 3 more

Conditions: Asthma, Wheezing
Interventions: Broncho-Vaxom (BV), Placebo; Drug · Other
Lead sponsor: University of Arizona; Other
Eligibility: 6 Months to 18 Months
Enrollment: 822 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2017 – 2026
U.S. locations: 11
States / cities: Phoenix, Arizona • Tucson, Arizona • Oakland, California + 8 more

Search by objective public record fields.

NSAID RCT for Prevention of Altitude Sickness

Safety and Tolerability Study to Evaluate MEDI-534 in Children 6 to < 24 Months of Age

Decompression Tables for Diving at Altitude

Understanding Community Considerations, Opinions, Values, Impacts, and Decisions for COVID-19

A Study to Investigate Acute Respiratory Virus Infections in Participants at High Risk for Severe Illness

Treatment of Preschool Children With Upper Respiratory Tract Illnesses Using Azythromycin and Lower Respiratory Tract Symptoms Using Oral Corticosteroids.

Adjuvanted Influenza Vaccination in U.S. Nursing Homes

Altitude Sickness Prevention With Ibuprofen Relative to Acetazolamide and Treatment Efficacy

Long Term Outcomes of Patients With COVID-19

Asthma Disparities in Latino Children:Acculturation,Illness Representations & CAM

Strategy to Avoid Excessive Oxygen in Major Burn Patients

Observational Study of Obstructive Lung Disease (NOVELTY)

Effect of an H1 Receptor Antagonist on Exercise Performance in Hypoxia

Trial of Supplemental Parenteral Nutrition in Under and Over Weight Critically Ill Patients (TOP-UP)

An Observational Study to Assess RSV-associated Illness in Adults With COPD and/or CHF

Apple Respiratory Study

Novel INPUT Screening Tool to Improve Illness Understanding in Patients With Metastatic or Incurable Lung Cancer

Physiological Adaptations to Simulated Intermittent Altitude on Human Health and Performance

Improving Communication About Serious Illness

REmotely Monitored, Mobile Health-Supported High Intensity Interval Training After COVID-19 Critical Illness (REMM-HIIT-COVID-19)

Three New Ideas to Protect Special Forces From the Stress of High Altitude

Does a Technology Enabled Multi-disciplinary Team-based Care Model for the Management of Long COVID and Other Fatiguing Illnesses Improve Clinical Care of Patients and Represent a Sustainable Approach Within a Federally Qualified Health Center?

Tube Size Randomized Trial During Emergency Tracheal Intubation

Oral Bacterial Extract for the Prevention of Wheezing Lower Respiratory Tract Illness