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ClinicalTrials.gov public records Last synced Oct 21, 2026, 12:55 AM EDT

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Showing 1–24 of 85 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Fainting 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, 12:55 AM EDT
Completed No phase listed Observational

Tilt Table With Suspected Postural Orthostatic Tachycardia Syndrome (POTS) Subjects

NCT01617616
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Syncope, Vasovagal, Neurocardiogenic Syncope
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
10 Years to 21 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Oct 21, 2026, 12:55 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Presyncope (Syncope) Prevention Study

NCT04772755
View directory record Official record
Conditions
Syncope, Vasovagal
Interventions
Buzzy® and Electronic Game
Device
Lead sponsor
Duke University
Other
Eligibility
10 Years to 14 Years
Enrollment
338 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Atlanta, Georgia • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 16, 2023 · Synced Oct 21, 2026, 12:55 AM EDT
Not listed No phase listed Observational

Improving Management of Emergency Department Patients With Undifferentiated Syncope: Prospective Validation of the Canadian Syncope Risk Score

NCT05538143
View directory record Official record
Conditions
Syncope
Interventions
Comprehensive ED syncope/presyncope management tool
Other
Lead sponsor
Kaiser Permanente
Other
Eligibility
16 Years and older
Enrollment
4,000 participants
Timeline
2022 – 2024
U.S. locations
5
States / cities
Oakland, California • Richmond, California • Roseville, California + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 6, 2024 · Synced Oct 21, 2026, 12:55 AM EDT
Completed Not applicable Interventional

PREPARE - Primary Prevention Parameters Evaluation

NCT00279279
View directory record Official record
Conditions
Tachycardia, Ventricular, Implantable Cardioverter Defibrillator (ICD), Fibrillation, Ventricular, Syncope
Interventions
Implanted Device
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
31
States / cities
Birmingham, Alabama • Mesa, Arizona • Phoenix, Arizona + 28 more
Source: ClinicalTrials.gov public record
Updated Oct 26, 2006 · Synced Oct 21, 2026, 12:55 AM EDT
Completed Not applicable Interventional

Addressing Fear and Risk of Vasovagal Reactions Among High School Donors

NCT03835299
View directory record Official record
Conditions
Blood Donors
Interventions
Fear Intervention
Behavioral
Lead sponsor
Ohio University
Other
Eligibility
16 Years and older
Enrollment
4,035 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Athens, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 16, 2021 · Synced Oct 21, 2026, 12:55 AM EDT
Completed No phase listed Observational

Validation of the San Francisco Syncope Rule

NCT00300625
View directory record Official record
Conditions
Syncope, Near Syncope
Interventions
Application of the San Francisco Syncope Rule
Procedure
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
21 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2005
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 15, 2018 · Synced Oct 21, 2026, 12:55 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

fMRI in Blood Phobia Syncope

NCT00715065
View directory record Official record
Conditions
Syncope, Blood Injury Phobia, Autonomic Dysfunction
Interventions
fMRI Scan
Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 30 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 9, 2013 · Synced Oct 21, 2026, 12:55 AM EDT
Completed No phase listed Observational

Practical Approaches to Care in Emergency Syncope

NCT04533425
View directory record Official record
Conditions
Syncope, Presyncope
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
40 Years and older
Enrollment
1,297 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
5
States / cities
Sacramento, California • New York, New York • Rochester, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 21, 2026, 12:55 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

MRI to Assess the Effects of Dysautonomia and Chronic Nausea on Brain Transmitters

NCT01692561
View directory record Official record
Conditions
Dysautonomia
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
9 Years to 18 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 27, 2018 · Synced Oct 21, 2026, 12:55 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Oral Water Hydration to Prevent Post-Vaccination Presyncope

NCT02353390
View directory record Official record
Conditions
Presyncope, Syncope
Interventions
Oral Water Hydration
Other
Lead sponsor
Duke University
Other
Eligibility
11 Years to 21 Years
Enrollment
1,820 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
2
States / cities
Boston, Massachusetts • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 7, 2016 · Synced Oct 21, 2026, 12:55 AM EDT
Terminated Phase 3 Interventional Results available

Phase 3 Clinical Effect Durability of TD-9855 for Treating Symptomatic nOH in Subjects With Primary Autonomic Failure

NCT03829657
View directory record Official record
Conditions
Symptomatic Neurogenic Orthostatic Hypotension, MSA, Parkinson's Disease (PD), Pure Autonomic Failure (PAF)
Interventions
ampreloxetine, Placebo
Drug
Lead sponsor
Theravance Biopharma
Industry
Eligibility
30 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
20
States / cities
Sun City, Arizona • La Jolla, California • Palo Alto, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2023 · Synced Oct 21, 2026, 12:55 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, 12:55 AM EDT
Completed No phase listed Observational

The Simple ECG Monitoring Trial (Comparison of a Novel Recording System With a Standard Holter Monitor)

NCT01382953
View directory record Official record
Conditions
Syncope, Pre-syncope, Atrial Fibrillation, Supraventricular Tachycardia
Interventions
Standard Holter/Investigational patch
Device
Lead sponsor
Seattle Institute for Cardiac Research
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
2
States / cities
Chicago, Illinois • Enumclaw, Washington
Source: ClinicalTrials.gov public record
Updated Jan 10, 2012 · Synced Oct 21, 2026, 12:55 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, 12:55 AM EDT
Completed No phase listed Observational

Evaluation of Syncope,Its Diagnosis, Treatment, Outcome and Prognosis

NCT00764985
View directory record Official record
Conditions
Syncope
Interventions
Not listed
Lead sponsor
St. Luke's-Roosevelt Hospital Center
Other
Eligibility
18 Years and older
Enrollment
540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 2, 2010 · Synced Oct 21, 2026, 12:55 AM EDT
Withdrawn Not applicable Interventional

Sinusoidal Galvanic Vestibular Stimulation for Neurogenic Orthostatic Hypotension / Syncope

NCT04976101
View directory record Official record
Conditions
Neurogenic Orthostatic Hypotension
Interventions
Sinosuidal Galvanic Vestibular Stimulation, Placebo
Device
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 16, 2022 · Synced Oct 21, 2026, 12:55 AM EDT
Completed Not applicable Interventional Results available

Study of New Implantable Loop Recorder

NCT00746564
View directory record Official record
Conditions
Tachyarrhythmias, Syncope
Interventions
SJM Confirm
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
9
States / cities
Anchorage, Alaska • Scottsdale, Arizona • Little Rock, Arkansas + 6 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2019 · Synced Oct 21, 2026, 12:55 AM EDT
Terminated Not applicable Interventional

Point-of-Care Ultrasound in the Emergency Department Evaluation of Syncope

NCT01671371
View directory record Official record
Conditions
Syncope
Interventions
Point-of-Care Ultrasound
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 30, 2016 · Synced Oct 21, 2026, 12:55 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, 12:55 AM EDT
Completed Not applicable Interventional

Abdominal and Lower Extremity Compression During Tilt Table Testing in Adolescent POTS Patients

NCT01795469
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome (POTS), Syncope
Interventions
Zoex compression garment
Device
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
12 Years to 19 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 31, 2017 · Synced Oct 21, 2026, 12:55 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

LUX-Dx Insertable Cardiac Monitor Remote Programming and Performance Study

NCT04732728
View directory record Official record
Conditions
Atrial Fibrillation, Syncope, Cryptogenic Stroke
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
727 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
24
States / cities
Huntsville, Alabama • Flagstaff, Arizona • Jonesboro, Arkansas + 21 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Oct 21, 2026, 12:55 AM EDT
Completed Not applicable Interventional

Pediatric Adhesion and New Dermal Approach Study

NCT07118124
View directory record Official record
Conditions
Syncope, Pediatric, Congenital Athymia, Congenital Heart Disease, Arrhythmia, Arrhythmia in Children
Interventions
Zio monitor
Device
Lead sponsor
iRhythm Technologies, Inc.
Industry
Eligibility
1 Year to 17 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Boise, Idaho • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 21, 2026, 12:55 AM EDT
Completed No phase listed Observational Results available

LBBAP Data Collection Registry

NCT05887323
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction, Heart Block, Syncope, Cardiomyopathies, Heart Failure
Interventions
Implantation of the Tendril 2088 lead in the LBBA
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
5
States / cities
Jonesboro, Arkansas • Rancho Mirage, California • Pensacola, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2024 · Synced Oct 21, 2026, 12:55 AM EDT