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ClinicalTrials.gov public records Last synced May 22, 2026, 4:11 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Syncope Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Drug Resistant Epilepsy, Drop Seizures, Generalized Tonic Clonic Seizure, Complex Partial Seizure, Fall Due to Seizure
Interventions
Hövding inflatable helmet
Device
Lead sponsor
Michael A. Gelfand, MD, PhD
Other
Eligibility
18 Years to 60 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 8, 2025 · Synced May 22, 2026, 4:11 AM EDT
Terminated Not applicable Interventional
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 29, 2016 · Synced May 22, 2026, 4:11 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Vasovagal Syncope, Postural Tachycardia Syndrome
Interventions
Phenylephrine, L-Ng-monomethyl Arginine (L-NMMA)
Drug
Lead sponsor
New York Medical College
Other
Eligibility
14 Years to 29 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2022
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced May 22, 2026, 4:11 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers
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 9, 2025 · Synced May 22, 2026, 4:11 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Cardiopulmonary Failure, Myocardial Infarction (MI), Heart Decompensation, Heart Failure, HFrEF - Heart Failure with Reduced Ejection Fraction, HFpEF - Heart Failure with Preserved Ejection Fraction, Syncopation, Syncope, Ischemic Cardiovascular Disease, STEMI, STEMI (ST Elevation MI), Atrial Fibrillation (AF), Atrial Enlargement, LVF, Conduction Defect, Conduction Abnormalities, Heart Block, Valvular Diseases, Cardiac Output, Low, Stroke Volume, Stroke Volume Variation, Hyperkalemia, Hypercalcemia, Hypocalcemia, LV Dysfunction, QT Prolongation, Sudden Cardiac Death Due to Cardiac Arrhythmia, Ventricular Arrhythmia, Pacing, Pacing Induced Dyssynchrony, Silent Ischemia, Pericarditis, Sleep Related Breathing Disorder, RSA, Apnea, Obstructive, Cardiac Output Measurement, Respiratory Impedance, CRT And/or ICD, Infarction, Cardiomyopathies, Primary, Hypertrophy
Interventions
SUBPROTOCOL A, SUBPROTOCOL B, SUBPROTOCOL C, SUBPROTOCOL D, SUBPROTOCOL E, SUBPROTOCOL F, SUBPROTOCOL G, SUBPROTOCOL H
Device
Lead sponsor
Peerbridge Health, Inc
Industry
Eligibility
18 Years and older
Enrollment
15,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Melbourne, Florida
Source: ClinicalTrials.gov public record
Updated Jan 7, 2025 · Synced May 22, 2026, 4:11 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Syncope
Interventions
Emergency Department Observation Protocol, Unstructured, inpatient evaluation
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years and older
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
4
States / cities
Los Angeles, California • Boston, Massachusetts • Royal Oaks, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2023 · Synced May 22, 2026, 4:11 AM EDT
Completed Phase 4 Interventional
View directory record Official record
Conditions
Neurocardiogenic Syncope
Interventions
Propranolol
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 22, 2026, 4:11 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Syncope, Vasovagal
Interventions
Pre-Donation Water Consumption, Muscle Tensing Exercise During Donation, Muscle Tensing Exercise Prior to Donation
Behavioral
Lead sponsor
Ohio University
Other
Eligibility
18 Years and older
Enrollment
441 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
2
States / cities
Athens, Ohio • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 5, 2016 · Synced May 22, 2026, 4:11 AM EDT
Terminated No phase listed Observational
View directory record Official record
Conditions
Posttraumatic Stress Disorder, Pseudopheochromocytoma, Healthy Volunteers, Neurocardiogenic Syncope, Postural Tachycardia Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
2 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 7, 2021 · Synced May 22, 2026, 4:11 AM EDT
Not listed No phase listed Observational
View directory record Official record
Conditions
Syncope, Presyncope, Palpitations, Atrial Fibrillation, Supraventricular Tachycardia
Interventions
Not listed
Lead sponsor
Bardy Diagnostics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
4
States / cities
Chicago, Illinois • Iowa City, Iowa • Charlotte, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2016 · Synced May 22, 2026, 4:11 AM EDT
Active, not recruiting No phase listed Observational
View directory record Official record
Conditions
Cardiac Pacemaker, Arrythmia, Bradycardia
Interventions
Aveir VR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
3,427 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2034
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced May 22, 2026, 4:11 AM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Cardiac Pacemaker, Arrythmia, Bradycardia
Interventions
Aveir DR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,805 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced May 22, 2026, 4:11 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Cardiac Arrhythmia, Syncope
Interventions
CarnationTM Ambulatory Monitoring Sternal ECG Patch System, Conventional 24-Hour 7 Lead Holter Monitor Recorder
Device
Lead sponsor
Children's National Research Institute
Other
Eligibility
Up to 35 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 27, 2022 · Synced May 22, 2026, 4:11 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Syncope, Vasovagal
Interventions
Buzzy®, Music
Device · Behavioral
Lead sponsor
Duke University
Other
Eligibility
10 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
2
States / cities
Atlanta, Georgia • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2019 · Synced May 22, 2026, 4:11 AM EDT
Completed Phase 2 Interventional Results available
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 7, 2026 · Synced May 22, 2026, 4:11 AM EDT
Active, not recruiting Phase 4 Interventional
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 8, 2024 · Synced May 22, 2026, 4:11 AM EDT
Completed No phase listed Observational
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 1, 2010 · Synced May 22, 2026, 4:11 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Syncope
Interventions
Not listed
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
7 Years to 21 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 12, 2012 · Synced May 22, 2026, 4:11 AM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Sick Sinus Syndrome, Complete Heart Block, Syncope, Chronic Systolic Heart Failure
Interventions
polymixin/bacitracin, cephalexin, or levofloxacin, or clindamycin, Saline
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
1,010 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 8, 2022 · Synced May 22, 2026, 4:11 AM EDT
Completed No phase listed Observational Results available
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 7, 2024 · Synced May 22, 2026, 4:11 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Pneumonia, Syncope, Congestive Heart Failure, Cellulitis, Pyelonephritis, AKI - Acute Kidney Injury, Diabetic Foot Infection, Osteomyelitis
Interventions
Next Day Clinic
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
570 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced May 22, 2026, 4:11 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Syncope
Interventions
SynDA
Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
30 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 25, 2020 · Synced May 22, 2026, 4:11 AM EDT
Completed Not applicable Interventional
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 25, 2006 · Synced May 22, 2026, 4:11 AM EDT
Completed Not applicable Interventional
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 30, 2017 · Synced May 22, 2026, 4:11 AM EDT