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ClinicalTrials.gov public records Last synced Oct 28, 2026, 10:50 AM EDT

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Showing 1–24 of 108 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Acute Respiratory Illness Clear all
Completed Phase 2 Interventional Results available

Acetaminophen and Ascorbate in Sepsis: Targeted Therapy to Enhance Recovery

NCT04291508
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Critical Illness, Respiratory Failure, Sepsis
Interventions
Intravenous Acetaminophen (room temperature), Intravenous Vitamin C (refrigerated), 5% Dextrose (room temperature), 5% Dextrose refrigerated
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
488 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
41
States / cities
Birmingham, Alabama • Tucson, Arizona • Fresno, California + 34 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2024 · Synced Oct 28, 2026, 10:50 AM EDT
Terminated Phase 3 Interventional Results available

CONvalescent Plasma for Hospitalized Adults With COVID-19 Respiratory Illness (CONCOR-1)

NCT04348656
View directory record Official record
Conditions
COVID-19
Interventions
Convalescent plasma
Biological
Lead sponsor
Hamilton Health Sciences Corporation
Other
Eligibility
16 Years and older
Enrollment
940 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Brooklyn, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 3, 2022 · Synced Oct 28, 2026, 10:50 AM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

The Role of Acetazolamide in Mitigating Inflammation and Innate Immune Activation at High Altitude

NCT07517068
View directory record Official record
Conditions
Hypoxemia, Acute Mountain Sickness (AMS), Inflammation, Immune Response
Interventions
ACETAZOLAMIDE oral capsule, Placebo Arm
Drug · Device
Lead sponsor
University of California, Riverside
Other
Eligibility
18 Years to 65 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Riverside, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Oct 28, 2026, 10:50 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Vocxi Breath Analyzer Study in Pediatric Respiratory Infection

NCT07902115
View directory record Official record
Conditions
Acute Respiratory Illness, Viral Respiratory Infection
Interventions
MBP® Breath Analyzer
Device
Lead sponsor
University of Minnesota
Other
Eligibility
7 Years to 17 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 28, 2026 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Phase 2 Interventional

Nutrition and Exercise in Critical Illness

NCT03021902
View directory record Official record
Conditions
Acute Respiratory Failure
Interventions
IV amino acids, In-bed cycle ergometry exercise
Drug · Device
Lead sponsor
Clinical Evaluation Research Unit at Kingston General Hospital
Other
Eligibility
18 Years and older
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
7
States / cities
Lexington, Kentucky • Baltimore, Maryland • The Bronx, New York + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2025 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Not applicable Interventional Results available

Eye-Control Trial: Wearable Eye-Tracking Device as Means of Communication

NCT04582149
View directory record Official record
Conditions
Acute Respiratory Failure Requiring Mechanical Ventilation
Interventions
EyeControl Eye-tracking Device
Device
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 25, 2025 · Synced Oct 28, 2026, 10:50 AM EDT
Enrolling by invitation Not applicable Interventional

Tube Size Randomized Trial During Emergency Tracheal Intubation

NCT06939361
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Phase 2Phase 3 Interventional Results available

EPIC-HR: Study of Oral PF-07321332/Ritonavir Compared With Placebo in Nonhospitalized High Risk Adults With COVID-19

NCT04960202
View directory record Official record
Conditions
COVID-19
Interventions
PF-07321332, Ritonavir, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
2,091 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
73
States / cities
Pelham, Alabama • Mesa, Arizona • Tucson, Arizona + 46 more
Source: ClinicalTrials.gov public record
Updated Jul 10, 2025 · Synced Oct 28, 2026, 10:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Acute Respiratory Illness Surveillance (AcRIS) With Mobile Application in a Low-Interventional Decentralized Study.

NCT04748445
View directory record Official record
Conditions
Healthy
Interventions
SARS-CoV-2/Influenza/RSV RT-PCR
Diagnostic Test
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
9,151 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 23, 2024 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Not applicable Interventional

Effect Of Acute Inflammatory Mediators On Functional Limitations In Patients With Acute Respiratory Failure

NCT01707303
View directory record Official record
Conditions
Acute Respiratory Failure
Interventions
Early ICU rehabilitation strategies, Usual Care
Other
Lead sponsor
Wake Forest University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Phase 3 Interventional Results available

Vitamin D to Improve Outcomes by Leveraging Early Treatment

NCT03096314
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Vitamin D Deficiency, Critical Illness
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
1,358 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
47
States / cities
Fresno, California • Los Angeles, California • Sacramento, California + 34 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2020 · Synced Oct 28, 2026, 10:50 AM EDT
Completed No phase listed Observational

Inhaled Sedation in COVID-19-related Acute Respiratory Distress Syndrome (ISCA): an International Research Data Study in the Recent Context of Widespread Disease Resulting From the 2019 (SARS-CoV2) Coronavirus Pandemics (COVID-19)

NCT04383730
View directory record Official record
Conditions
Critically Illness, Sedation, Invasive Mechanical Ventilation, Acute Respiratory Distress Syndrome
Interventions
Intravenous sedation, Inhaled sedation
Drug
Lead sponsor
University Hospital, Clermont-Ferrand
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 5, 2021 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

High Altitude Muscle Recovery

NCT06392373
View directory record Official record
Conditions
High Altitude
Interventions
CHO+PRO, CHO
Dietary Supplement
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 39 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 20, 2025 · Synced Oct 28, 2026, 10:50 AM EDT
Not yet recruiting Not applicable Interventional

Tracing Of Real-time glu13Cose Metabolism in Human Immune Cells - Intensive Care Unit

NCT07811180
View directory record Official record
Conditions
Glucose, Metabolism, Isotope Labeling, Immune System and Related Disorders, Critical Illness, Intensive Care Unit (ICU), Sepsis
Interventions
13C6-Glucose
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 28, 2026, 10:50 AM EDT
Completed No phase listed Observational

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

NCT05661604
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Feb 28, 2025 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Not applicable Interventional Results available

Pragmatic Trial Examining Oxygenation Prior to Intubation

NCT05267652
View directory record Official record
Conditions
Acute Respiratory Failure
Interventions
Preoxygenation with Non-Invasive Positive Pressure Ventilation, Facemask Oxygen
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
1,301 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
16
States / cities
Birmingham, Alabama • Aurora, Colorado • Iowa City, Iowa + 13 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Oct 28, 2026, 10:50 AM EDT
Active, not recruiting No phase listed Observational

A Study to Look at the Health Outcomes of Patients With COVID-19 and Influenza

NCT05160636
View directory record Official record
Conditions
COVID-19, Coronavirus Disease 2019, Influenza
Interventions
COVID-19 Vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
999 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Oct 28, 2026, 10:50 AM EDT
Recruiting No phase listed Observational

The APS Phenotyping Study

NCT06521502
View directory record Official record
Conditions
ARDS, Sepsis, Pneumonia
Interventions
Blood collection, Urine Collection, Nasal, oral, and rectal swabs, Stool collection, Heat Moisture Exchange Filter collection, Tracheal Aspirate sample collection, Non-bronchoscopic bronchoalveolar lavage (NBBAL), Surveys, Short physical performance battery, Hand grip strength, CNS Vital Signs, Muscle Ultrasound, Muscle Strength, Spirometry, Lung Diffusion Testing (DLCO), Chest CT Scan
Other · Procedure · Radiation
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
4,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
20
States / cities
Fresno, California • Palo Alto, California • San Francisco, California + 12 more
Source: ClinicalTrials.gov public record
Updated Feb 20, 2026 · Synced Oct 28, 2026, 10:50 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 28, 2026, 10:50 AM EDT
Recruiting Not applicable Interventional

Respiratory Training in the Treatment of Transdiagnostic Pathological Anxiety

NCT05427708
View directory record Official record
Conditions
Anxiety Disorders, Trauma, Generalized Anxiety Disorder, Panic Disorder, Agoraphobia, Illness Anxiety Disorder, Social Anxiety Disorder, Posttraumatic Stress Disorder, Acute Stress Disorder, Adjustment Disorder With Anxious Mood
Interventions
Capnometry-Guided Respiratory Intervention, Psycho-Education
Device · Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 24, 2025 · Synced Oct 28, 2026, 10:50 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

NSAID RCT for Prevention of Altitude Sickness

NCT01606527
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 25, 2012 · Synced Oct 28, 2026, 10:50 AM EDT
Completed No phase listed Observational

A 24 Month Observational Study of Infants 3-24 Months, Who Suffer an Acute Episode of Respiratory Infection and Wheezing Illness

NCT03741322
View directory record Official record
Conditions
Respiratory Tract Infections, Wheezing
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
3 Months to 24 Months
Enrollment
5 participants
Timeline
2018 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 25, 2020 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Phase 4 Interventional Results available

Clinical Trial of Niagen to Examine Recovery in People With Persistent Cognitive and Physical Symptoms After COVID-19

NCT04809974
View directory record Official record
Conditions
Covid19, Sequelae of; Infection, Cognitive Symptom
Interventions
Niagen
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Oct 28, 2026, 10:50 AM EDT
Completed Phase 3 Interventional Results available

Study of Apixaban for the Prevention of Thrombosis-related Events in Patients With Acute Medical Illness

NCT00457002
View directory record Official record
Conditions
Venous Thrombosis, Pulmonary Embolism
Interventions
Apixaban, Enoxaparin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
40 Years and older
Enrollment
6,758 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
48
States / cities
Birmingham, Alabama • Huntsville, Alabama • Phoenix, Arizona + 42 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2015 · Synced Oct 28, 2026, 10:50 AM EDT