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Showing 1–24 of 25 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Altered Mental Status Clear all
Completed No phase listed Observational Accepts healthy volunteers Results available

Prospective Study of Veteran Health in Previously Deployed Soldiers

NCT00285246
View directory record Official record
Conditions
Combat Disorders
Interventions
Not listed
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 60 Years
Enrollment
838 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
2
States / cities
Jackson, Mississippi • East Orange, New Jersey
Source: ClinicalTrials.gov public record
Updated May 11, 2015 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Arts Engagement on Physical Performance, Cognition, Social Isolation, and Self-Perception in Older Adults

NCT04281654
View directory record Official record
Conditions
Social Isolation, Mental Status Change, Cognitive Impairment, Physical Activity, Quality of Life, Self-Perception
Interventions
Active Social Conversation
Other
Lead sponsor
George Mason University
Other
Eligibility
65 Years to 100 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Manassas, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 3, 2022 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Phase 2 Interventional

Putting Electroencephalography (EEG) in the Emergency Department

NCT01671475
View directory record Official record
Conditions
Altered Mental Status
Interventions
microEEG (Bio-Signal microEEG)
Device
Lead sponsor
Bio-Signal Group Corp.
Industry
Eligibility
18 Years and older
Enrollment
149 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
2
States / cities
Brooklyn, New York • Brookyln, New York
Source: ClinicalTrials.gov public record
Updated Feb 14, 2013 · Synced Jul 24, 2026, 4:07 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Posturing Effects on Perception of Time and Perceptions of the Provider-Patient Interaction in the Emergency Department

NCT00170105
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
244 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 1, 2010 · Synced Jul 24, 2026, 4:07 AM EDT
Enrolling by invitation No phase listed Observational

Pre-hospital Ventilation Clinical Study

NCT05604430
View directory record Official record
Conditions
Altered Mental Status, Sepsis, Heart Failure, Hemorrhage, Respiratory Distress Syndrome, Adult, Cardiac Arrest
Interventions
731 Series Ventilator
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
Not listed
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
4
States / cities
Baton Rouge, Louisiana • Uxbridge, Massachusetts • Fort Worth, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 16, 2025 · Synced Jul 24, 2026, 4:07 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Sun-Kissed Serenity: Morning Rays for a Brighter Mind

NCT07256574
View directory record Official record
Conditions
Mental Status Change
Interventions
Morning sunlight
Behavioral
Lead sponsor
Efforia, Inc
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced Jul 24, 2026, 4:07 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Is Dexmedetomidine Associated With a Lower Incidence of Postoperative Delirium When Compared to Propofol or Midazolam in Cardiac Surgery Patients

NCT00417664
View directory record Official record
Conditions
Delirium
Interventions
Dexmedetomidine, Propofol, Midazolam
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 89 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2004
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 26, 2022 · Synced Jul 24, 2026, 4:07 AM EDT
Terminated Not applicable Interventional

Descriptive Analysis of Near Infrared Spectroscopy in Critically Ill and Injured Pediatric and Neonatal Patients

NCT02950181
View directory record Official record
Conditions
Stroke, Diabetic Ketoacidosis, Increased Intracranial Pressures, Altered Mental Status
Interventions
NIRS
Device
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
1 Day to 21 Years
Enrollment
299 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated May 27, 2020 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Phase 3 Interventional

Effects of Aripiprazole in Overweight Patients Treated With Olanzapine for Schizophrenia or Schizoaffective Disorder

NCT00095524
View directory record Official record
Conditions
Body Weight Change, Schizophrenia, Schizoaffective Disorder, Psychotic Disorder
Interventions
Aripiprazole
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
23
States / cities
Little Rock, Arkansas • Anaheim, California • Cerritos, California + 20 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2013 · Synced Jul 24, 2026, 4:07 AM EDT
Active, not recruiting No phase listed Observational

Sepsis Associated Encephalopathy (SAE) Biomarkers

NCT03133208
View directory record Official record
Conditions
Sepsis, Altered Mental Status, Sepsis-Associated Delirium, Sepsis Associated Encephalopathy, Delirium, Sepsis Associated
Interventions
Blood draws
Procedure
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 27, 2025 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Phase 2 Interventional Results available

Observational Study of Cognitive Outcomes for Subjects Who Have Had Prior PET Amyloid Imaging With Florbetapir F 18 (18F-AV-45)

NCT00857506
View directory record Official record
Conditions
Alzheimer's Disease, Mild Cognitive Impairment
Interventions
florbetapir F 18
Drug
Lead sponsor
Avid Radiopharmaceuticals
Industry
Eligibility
50 Years and older
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
8
States / cities
Scottsdale, Arizona • Tucson, Arizona • Costa Mesa, California + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2013 · Synced Jul 24, 2026, 4:07 AM EDT
Completed No phase listed Observational

Stress Biomarkers Among Patients Undergoing Treatment for Excited Delirium and Severe Pain in the Emergency Department

NCT01747824
View directory record Official record
Conditions
Agitation, Excited Delirium, Pain
Interventions
Not listed
Lead sponsor
Hennepin Healthcare Research Institute
Other
Eligibility
18 Years and older
Enrollment
1,322 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 22, 2015 · Synced Jul 24, 2026, 4:07 AM EDT
Completed No phase listed Observational

Do EEG and Neurocognitive Assessments Correlate With COVID Brainfog Symptoms?

NCT05303116
View directory record Official record
Conditions
COVID-19
Interventions
Brainscope modified EEG and cognitive testing
Diagnostic Test
Lead sponsor
Texas Tech University Health Sciences Center, El Paso
Other
Eligibility
18 Years to 85 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated May 17, 2025 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Helping Youth on the Path to Employment

NCT04254562
View directory record Official record
Conditions
Mental Impairment, Educational Problems
Interventions
Weekly Meetings with a Supported Employment/Supported Education Specialist, Focused Skill and Strategy Training (FSST), Enhanced Services as Usual
Behavioral
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years to 30 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
3
States / cities
Fort Collins, Colorado • Worcester, Massachusetts • Binghamton, New York
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Not applicable Interventional

Interaction of Cobalamin Status With Nitrous Oxide in Relation to Postoperative Cognitive Changes in the Elderly

NCT00212147
View directory record Official record
Conditions
Avitaminosis, Delirium, Dementia, Amnestic, Cognitive Disorders
Interventions
General anesthesia with nitrous oxide, General anesthesia without nitrous oxide
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
60 Years and older
Enrollment
444 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
2
States / cities
Brooklyn, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 7, 2022 · Synced Jul 24, 2026, 4:07 AM EDT
Completed No phase listed Observational

Point of Care Ultrasound Evaluation in the Post-Anesthesia Unit

NCT04410757
View directory record Official record
Conditions
Hypotension, Hypoxemia, Altered Mental Status, Urine Output Low, Chest Pain
Interventions
Not listed
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Aug 30, 2020 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Not applicable Interventional Results available

EEG Cap for Identification of Non-Convulsive Status Epilepticus

NCT03138876
View directory record Official record
Conditions
Nonconvulsive Status Epilepticus, Subclinical Seizure, Altered Mental Status, Nonepileptic Seizures, Encephalopathy
Interventions
EEG Cap, Anti-seizure medication, Standard EEG
Device · Drug · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 24, 2019 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Phase 4 Interventional Results available

Effectiveness of Florbetapir (18F) PET Imaging in Changing Patient Management and the Relationship Between Scan Status and Cognitive Decline

NCT01703702
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
florbetapir (18F)
Drug
Lead sponsor
Avid Radiopharmaceuticals
Industry
Eligibility
50 Years to 90 Years
Enrollment
641 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
21
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Sun City, Arizona + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 16, 2016 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Not applicable Interventional

Improving Safety of Diagnosis and Therapy in the Inpatient Setting

NCT04393909
View directory record Official record
Conditions
Delirium, Confusion, Mental Status Change, Back Pain, Hip Pain Chronic, Chest Pain, Asthma, COPD, Cellulitis, Soft Tissue Infections, Cough, Deep Vein Thrombosis, Pulmonary Embolism, Venous Thromboembolism, Dyspnea, Electrolyte Metabolism Abnormal, Fever, Failure to Thrive, Weakness, Protein-Calorie Malnutrition, Headache, Neck Pain, Hypoxia, Pneumonia, Sepsis, Syncope, Vomiting, Diarrhea, Leg Pain, Abdominal Pain
Interventions
Diagnostic Uncertainty Educational Curriculum, Diagnostic Timeout, Patient Diagnostic (Dx) Questionnaire, Enhancements to Epic-integrated Quality & Safety Dashboard
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 25, 2022 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Not applicable Interventional

Supported Employment Demonstration

NCT03682263
View directory record Official record
Conditions
Mental Impairment
Interventions
Full Service, Basic Service
Behavioral
Lead sponsor
Westat
Other
Eligibility
18 Years to 49 Years
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
52
States / cities
Lancaster, California • Denver, Colorado • St. Petersburg, Florida + 43 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2022 · Synced Jul 24, 2026, 4:07 AM EDT
Recruiting Not applicable Interventional

Researching Efficient Approaches to Delirium Identification-Sustaining Effective Translation

NCT05915377
View directory record Official record
Conditions
Delirium, Delirium in Old Age, Delirium With Dementia, Delirium Superimposed on Dementia
Interventions
READI-SET GO UB-CAM delirium screening into EHR
Other
Lead sponsor
Penn State University
Other
Eligibility
70 Years and older
Enrollment
1,050 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
2
States / cities
Boston, Massachusetts • State College, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Jul 24, 2026, 4:07 AM EDT
Completed Not applicable Interventional Results available

Efficacy Study of Polyethylene Glycol 3350-electrolyte Solution (GoLYTELY®) Versus Lactulose in Patients With Hepatic Encephalopathy.

NCT01283152
View directory record Official record
Conditions
Hepatic Encephalopathy, Cirrhosis, Portosystemic Encephalopathy, PSE
Interventions
Polyethylene glycol 3350-electrolyte solution (GoLYTELY®), Lactulose
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 10, 2014 · Synced Jul 24, 2026, 4:07 AM EDT
Completed No phase listed Observational

Brain Imaging, Nutrition, and Cognition in Breast Cancer Survivors

NCT05122000
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Ohio State University
Other
Eligibility
45 Years to 75 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Jul 24, 2026, 4:07 AM EDT
Completed No phase listed Observational

Putting Electroencephalography (EEG) in the Emergency Department

NCT01355211
View directory record Official record
Conditions
Altered Mental Status, Generalized Nonconvulsive Seizure Disorder, Status-epilepticus
Interventions
Not listed
Lead sponsor
Bio-Signal Group Corp.
Industry
Eligibility
13 Years and older
Enrollment
261 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Mar 1, 2012 · Synced Jul 24, 2026, 4:07 AM EDT