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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Acute Illness Clear all
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 7, 2015 · Synced Jul 23, 2026, 5:19 AM EDT
Withdrawn No phase listed Observational

BRAVO - Betrixaban Registry Using Real Time Observations in Acute Medical Illness to Assess Venous Thrombosis and Bleeding Outcomes

NCT03613402
View directory record Official record
Conditions
Venous Thromboses
Interventions
Not listed
Lead sponsor
Portola Pharmaceuticals
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 20, 2023 · Synced Jul 23, 2026, 5:19 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 19, 2026 · Synced Jul 23, 2026, 5:19 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 Dec 7, 2025 · Synced Jul 23, 2026, 5:19 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 7, 2026 · Synced Jul 23, 2026, 5:19 AM EDT
Completed No phase listed Observational

Learning Lab for Diagnostic Fidelity

NCT03865303
View directory record Official record
Conditions
Critical Illness
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 120 Years
Enrollment
25,551 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Mankato, Minnesota • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 7, 2023 · Synced Jul 23, 2026, 5:19 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Altitude Sickness Prevention and Efficacy of Comparative Treatments

NCT02604173
View directory record Official record
Conditions
Acute Mountain Sickness
Interventions
Budesonide, Acetazolamide, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Bishop, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Jul 23, 2026, 5:19 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 24, 2012 · Synced Jul 23, 2026, 5:19 AM EDT
Completed Not applicable Interventional

Childhood Asthma Research and Education (CARE) Network Trial - Acute Intervention Management Strategies (AIMS)

NCT00319488
View directory record Official record
Conditions
Asthma, Lung Diseases
Interventions
Inhaled Corticosteroid (Budesonide), Leukotriene Receptor Antagonist (Montelukast Sodium), Inhaled Albuterol
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
12 Months to 59 Months
Enrollment
238 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
6
States / cities
Tucson, Arizona • La Jolla, California • Denver, Colorado + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2016 · Synced Jul 23, 2026, 5:19 AM EDT
Not listed No phase listed Observational

Acute Encephalopathy in Critically Ill Patients With COVID-19

NCT04320472
View directory record Official record
Conditions
COVID-19, Encephalopathy, Critically Ill
Interventions
Follow up
Other
Lead sponsor
Ictal Group
Other
Eligibility
18 Years and older
Enrollment
250 participants
Timeline
2020
U.S. locations
2
States / cities
Miami, Florida • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 21, 2020 · Synced Jul 23, 2026, 5:19 AM EDT
Completed Not applicable Interventional

Assessing the Effectiveness of Individual Education Plans for Childhood Cancer Survivors

NCT00945828
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia, Central Nervous System Tumors, Lymphoma
Interventions
Annual Intervention Group, Quarterly Monitoring of IEP
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
6 Years to 12 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2010
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 7, 2012 · Synced Jul 23, 2026, 5:19 AM EDT
Not listed No phase listed Observational

Critical Illness Myopathy and Trajectory of Recovery in AKI Requiring CRRT

NCT05287204
View directory record Official record
Conditions
Acute Kidney Injury, Critical Illness Myopathy, Dialysis; Complications
Interventions
Musculoskeletal ultrasound, Assessments of muscle strength and physical function, Metabolomics
Diagnostic Test
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 89 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
3
States / cities
Iowa City, Iowa • Lexington, Kentucky • Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Jul 23, 2026, 5:19 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Colorado-Oregon Altitude Study

NCT05734716
View directory record Official record
Conditions
Acute Mountain Sickness
Interventions
Erythropoietin, Iron sucrose (Venofer), Sterile Sodium Chloride
Drug
Lead sponsor
University of Oregon
Other
Eligibility
18 Years to 40 Years
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Leadville, Colorado • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 9, 2023 · Synced Jul 23, 2026, 5:19 AM EDT
Active, not recruiting Not applicable Interventional

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?

NCT05167227
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Jul 23, 2026, 5:19 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 26, 2020 · Synced Jul 23, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Kent State University / Price Chopper Employee Wellness Study

NCT03454009
View directory record Official record
Conditions
Acute Respiratory Infection, Influenza-like Illness, Gastrointestinal Infection
Interventions
Multimodal hygiene intervention
Behavioral
Lead sponsor
Kent State University
Other
Eligibility
18 Years and older
Enrollment
195 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Schenectady, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2019 · Synced Jul 23, 2026, 5:19 AM EDT
Enrolling by invitation Not applicable Interventional

Hyperangulated Versus Standard Geometry Laryngoscope Blade Trial

NCT07223762
View directory record Official record
Conditions
Acute Respiratory Failure
Interventions
Hyperangulated video laryngoscope blade, Standard geometry video laryngoscope blade
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
18
States / cities
Los Angeles, California • Stanford, California • Denver, Colorado + 14 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Jul 23, 2026, 5:19 AM EDT
Completed Not applicable Interventional Results available

Improving Psychological Distress Among Critical Illness Survivors and Their Caregivers

NCT01983254
View directory record Official record
Conditions
Intensive Care Unit Survivors, Informal Caregivers (Family and Friends)
Interventions
coping skills training, education program
Behavioral · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
417 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
4
States / cities
Chapel Hill, North Carolina • Durham, North Carolina • Pittsburgh, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2020 · Synced Jul 23, 2026, 5:19 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 2, 2022 · Synced Jul 23, 2026, 5:19 AM EDT
Not listed Not applicable Interventional

Biomarkers, Genomics, Physiology in Critically Ill and ECMO Patients

NCT04669444
View directory record Official record
Conditions
Acute Respiratory Distress Syndrome, Cardiac Failure, Extracorporeal Membrane Oxygenation Complication, Respiratory Failure, Renal Failure, Critical Illness, Pulmonary Disease
Interventions
Ventilator
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Jul 23, 2026, 5:19 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Creatine Supplementation on Cognitive Measures and Markers of Acute Kidney Injury After Exercise in the Heat

NCT07472426
View directory record Official record
Conditions
Acute Kidney Injury, Exertional Heat Illness
Interventions
Creatine Monohydrate, Maltodextrin (Placebo)
Dietary Supplement
Lead sponsor
University of Northern Iowa
Other
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Cedar Falls, Iowa
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Jul 23, 2026, 5:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Echinacea and Acute Respiratory Illness

NCT02003651
View directory record Official record
Conditions
Acute Respiratory Infections
Interventions
Quick Defense, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 12, 2016 · Synced Jul 23, 2026, 5:19 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 18, 2025 · Synced Jul 23, 2026, 5:19 AM EDT
Not listed Not applicable Interventional

Dialogue Around Respiratory Illness Treatment

NCT02943551
View directory record Official record
Conditions
Respiratory Disease, Acute Respiratory Infection, Respiratory Infection, Upper Respiratory Infection
Interventions
Online Tutorial, Webinars, Booster Sessions, Feedback Reports, Parent Survey
Other
Lead sponsor
Seattle Children's Hospital
Other
Eligibility
6 Months to 10 Years
Enrollment
2,728 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
20
States / cities
Paragould, Arkansas • Eureka, California • Durango, Colorado + 16 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2019 · Synced Jul 23, 2026, 5:19 AM EDT