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ClinicalTrials.gov public records Last synced Oct 21, 2026, 9:40 AM EDT

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Showing 169–192 of 195 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Unconsciousness Clear all
Completed Not applicable Interventional Results available

Ambulatory Post-Syncope Arrhythmia Protection Feasibility Study

NCT02188147
View directory record Official record
Conditions
Syncope
Interventions
Short Term Wearable Defibrillator
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
6
States / cities
Danbury, Connecticut • Jacksonville, Florida • Minneapolis, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 21, 2023 · Synced Oct 21, 2026, 9:40 AM EDT
Recruiting No phase listed Observational

Screening Emotions in Adolescents at the Hospital for mTBI

NCT06370520
View directory record Official record
Conditions
Brain Injury Traumatic Mild, Brain Injuries, Brain Injuries, Acute, Head Injury With Intracranial Hemorrhage, Head Injury Trauma, Brain Injury Traumatic Focal With Loss of Consciousness, Skull Fractures, Diffuse Axonal Injury, Intracranial Hemorrhages, Head Injury
Interventions
Validated Questionnaires, Questionnaires, Clinician / Medical Record Variables
Behavioral · Other
Lead sponsor
University of California, Davis
Other
Eligibility
11 Years to 17 Years
Enrollment
2,592 participants
Timeline
2024 – 2028
U.S. locations
6
States / cities
Sacramento, California • Philadelphia, Pennsylvania • Providence, Rhode Island + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 21, 2026, 9:40 AM EDT
Completed Phase 4 Interventional

Syncope: Pacing or Recording in the Later Years

NCT01423994
View directory record Official record
Conditions
Syncope, Heart Block, Conduction Disorder of the Heart
Interventions
pacemaker, implantable loop recorder
Procedure
Lead sponsor
Canadian Institutes of Health Research (CIHR)
Government
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 16, 2019 · Synced Oct 21, 2026, 9:40 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Biospecimen Repository for Cardiac Arrhythmias at the Cleveland Clinic

NCT00921986
View directory record Official record
Conditions
Arrhythmias, Cardiac
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2035
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Oct 21, 2026, 9:40 AM EDT
Recruiting Not applicable Interventional

Pediatric Influence of Cooling Duration on Efficacy in Cardiac Arrest Patients (P-ICECAP)

NCT05376267
View directory record Official record
Conditions
Cardiac Arrest, Out-Of-Hospital, Hypothermia, Induced, Hypoxia-Ischemia, Brain
Interventions
Therapeutic Hypothermia
Device
Lead sponsor
University of Michigan
Other
Eligibility
2 Days to 17 Years
Enrollment
900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
52
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 44 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2026 · Synced Oct 21, 2026, 9:40 AM EDT
Not listed Phase 4 Interventional

Assessment of Midodrine in the Prevention of Vasovagal Syncope: The Prevention of Syncope Trial IV

NCT01456481
View directory record Official record
Conditions
Vasovagal Syncope
Interventions
midodrine hydrochloride, matching placebo
Drug
Lead sponsor
Dr. Bob Sheldon
Other
Eligibility
18 Years and older
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2024
U.S. locations
2
States / cities
Minneapolis, Minnesota • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 9, 2024 · Synced Oct 21, 2026, 9:40 AM EDT
Completed No phase listed Observational

Cervical Spine Clearance in Obtunded Trauma Patients

NCT00573014
View directory record Official record
Conditions
Coma, Wounds and Injuries
Interventions
Cervical Spine Clearance
Other
Lead sponsor
MetroHealth Medical Center
Other
Eligibility
Not listed
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Oct 21, 2026, 9:40 AM EDT
Completed No phase listed Observational

Assessing Patient-provider Interactions During the Preoperative Anesthesia Consult

NCT04508543
View directory record Official record
Conditions
Racism, Healthcare Disparities, Minority Health
Interventions
Non-verbal communication score
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 13, 2025 · Synced Oct 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional

Confirm Rx™ Versus Reveal LINQ™ - Which is More Reliable in Data Transmission? A Randomized Clinical Study

NCT03720639
View directory record Official record
Conditions
Cardiac Arrythmias, Syncope, Atrial Fibrillation, Atrial Flutter, Tachycardia, Stroke
Interventions
Abbott, Inc Confirm Rx™ versus Medtronic, Inc Reveal LINQTM
Device
Lead sponsor
Sparrow Clinical Research Institute
Other
Eligibility
18 Years and older
Enrollment
209 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
Lansing, Michigan • Traverse City, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 10, 2020 · Synced Oct 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional Results available

Nutritional Status and Enteral Absorption Capability After Brain Death

NCT00858390
View directory record Official record
Conditions
Brain Death
Interventions
enteral feeding with Oxepa® and Glutasolve®
Dietary Supplement
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
14 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 26, 2014 · Synced Oct 21, 2026, 9:40 AM EDT
Completed Phase 2 Interventional Results available

Using Mirabegron to Increase BP in Patients With POTS

NCT06133075
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Chronic Orthostatic Intolerance, Syncope
Interventions
Mirabegron 50 MG, Mirabegron 25 MG
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Oct 21, 2026, 9:40 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Naltrexone and Hypoglycemia in Type 1 Diabetes

NCT01053078
View directory record Official record
Conditions
Type 1 Diabetes, Hypoglycemia Unawareness
Interventions
Naltrexone, Placebo
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 21, 2026, 9:40 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

REsting and Stimulus-based Paradigms to Detect Organized NetworkS and Predict Emergence of Consciousness

NCT03504709
View directory record Official record
Conditions
Consciousness Disorder, Coma, Brain Injuries, Traumatic
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 21, 2024 · Synced Oct 21, 2026, 9:40 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Hypnosis in Autonomic Function

NCT00061009
View directory record Official record
Conditions
Vasovagal Syncope, Postural Tachycardia Syndrome, Hypnosis
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
93 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 21, 2026, 9:40 AM EDT
Completed No phase listed Observational

Race-Specific Propofol Titration to Effect for Procedural Sedation

NCT03290859
View directory record Official record
Conditions
Unconsciousness, Apnea, Postanesthetic, Sedative Overdose, Hypoxemia
Interventions
Titrate propofol monotherapy infusion to effect
Procedure
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
2,780 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 25, 2019 · Synced Oct 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional Results available

Aveir DR i2i Study

NCT05252702
View directory record Official record
Conditions
Cardiac Pacemaker, Artificial, Cardiac Rhythm Disorder, Bradycardia
Interventions
Aveir DR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
54
States / cities
Scottsdale, Arizona • Jonesboro, Arkansas • Little Rock, Arkansas + 44 more
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Oct 21, 2026, 9:40 AM EDT
Recruiting Not applicable Interventional

Vagus Nerve Stimulation in Patients in Comatose State

NCT07719595
View directory record Official record
Conditions
Traumatic Brain Injury, Severe Traumatic Brain Injury, Disorders of Consciousness Due to Severe Brain Injury, Coma, Traumatic
Interventions
Dual-Site Transcutaneous Auricular Nerve Stimulation (taVNS + taTNS)
Device
Lead sponsor
Sima Mofakham
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Oct 21, 2026, 9:40 AM EDT
Terminated Phase 2 Interventional Results available

Amitriptyline in Treating Hypoglycemia

NCT03591458
View directory record Official record
Conditions
Type1 Diabetes Mellitus, Hypoglycemia Unawareness
Interventions
Amitriptyline, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
21 Years to 60 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 22, 2019 · Synced Oct 21, 2026, 9:40 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Identifying the Brain Substrates of Hypoglycemia Unawareness in Type 1 Diabetes

NCT02866435
View directory record Official record
Conditions
Hypoglycemia
Interventions
Insulin, Glucose, Potassium phosphate
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Oct 21, 2026, 9:40 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Study to Tailor Advance Directives

NCT00121004
View directory record Official record
Conditions
Dementia, Persistent Vegetative State, Terminally Ill
Interventions
Advance Directive Selection
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 5, 2013 · Synced Oct 21, 2026, 9:40 AM EDT
Terminated Phase 3 Interventional Results available

Phase 3 Open-Label Extension Study of TD-9855 for Treating Symptomatic nOH in Subjects With Primary Autonomic Failure

NCT04095793
View directory record Official record
Conditions
Symptomatic Neurogenic Orthostatic Hypotension
Interventions
ampreloxetine
Drug
Lead sponsor
Theravance Biopharma
Industry
Eligibility
30 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
13
States / cities
Colorado Springs, Colorado • Boca Raton, Florida • Port Charlotte, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Nov 30, 2022 · Synced Oct 21, 2026, 9:40 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Novel Approach for the Prevention of Hypoglycemia Associated Autonomic Failure (HAAF)

NCT03608163
View directory record Official record
Conditions
Diabetes Mellitus, Type 1, Hypoglycemia, Hypoglycemia Unawareness
Interventions
Naloxone, Diazoxide, Placebo (for Naloxone), Placebo (for Diazoxide)
Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
21 Years to 55 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 21, 2026, 9:40 AM EDT
Completed No phase listed Observational

Study of Brain Cools Device in Patients Resuscitated From Cardiac Arrest

NCT03889340
View directory record Official record
Conditions
Cardiac Arrest With Successful Resuscitation
Interventions
IQool
Device
Lead sponsor
Adam Frisch
Other
Eligibility
18 Years and older
Enrollment
38 participants
Timeline
2019 – 2021
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 17, 2021 · Synced Oct 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional

Influence of Cooling Duration on Efficacy in Cardiac Arrest Patients

NCT04217551
View directory record Official record
Conditions
Cardiac Arrest, Out-Of-Hospital, Hypothermia, Induced, Hypoxia-Ischemia, Brain
Interventions
Therapeutic Hypothermia
Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
1,158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
76
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 57 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Oct 21, 2026, 9:40 AM EDT