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ClinicalTrials.gov public records Last synced May 22, 2026, 12:30 AM EDT

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

Showing 1–24 of 30 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Syncope, Vasovagal Clear all
Terminated Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Postural Tachycardia Syndrome (POTS), Vasovagal Syncope (VVS), Fainting
Interventions
Northera (Droxidopa), Placebo
Drug
Lead sponsor
New York Medical College
Other
Eligibility
18 Years to 35 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2022
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced May 22, 2026, 12:30 AM EDT
Completed No phase listed Observational
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 19, 2017 · Synced May 22, 2026, 12:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
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 26, 2018 · Synced May 22, 2026, 12:30 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Orthostatic Hypotension, Reflex Syncope
Interventions
Wearable heart monitor
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 1, 2023 · Synced May 22, 2026, 12:30 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, 12:30 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, 12:30 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, 12:30 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, 12:30 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, 12:30 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, 12:30 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, 12:30 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, 12:30 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, 12:30 AM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Syncope
Interventions
midodrine
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
16 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced May 22, 2026, 12:30 AM EDT
Not yet recruiting No phase listed Observational
View directory record Official record
Conditions
Orthostatic Hypotension, Reflex Syncope
Interventions
Wearable holter monitor
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced May 22, 2026, 12:30 AM EDT
Completed Early Phase 1 Interventional
View directory record Official record
Conditions
Syncope, Vasovagal
Interventions
Yoga
Other
Lead sponsor
Dhanunjaya Lakkireddy, MD, FACC
Other
Eligibility
18 Years to 60 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 29, 2015 · Synced May 22, 2026, 12:30 AM EDT
Completed Not applicable Interventional
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 15, 2021 · Synced May 22, 2026, 12:30 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Syncope
Interventions
Tilt table test
Procedure
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced May 22, 2026, 12:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
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 3, 2008 · Synced May 22, 2026, 12:30 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Myalgic Encephalomyelitis, Systemic Exertion Intolerance Disease (SEID), Postural Tachycardia Syndrome (POTS), Neurally Mediated Syncope (NMS)
Interventions
Normal Saline, Oral Rehydration Solution
Drug · Dietary Supplement
Lead sponsor
New York Medical College
Other
Eligibility
15 Years to 29 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced May 22, 2026, 12:30 AM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Syncope, Vasovagal
Interventions
CPC - Capsaicin, Phenylephrine, Caffeine, Tilt Table Test, Placebo
Drug · Diagnostic Test
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 50 Years
Enrollment
143 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 16, 2024 · Synced May 22, 2026, 12:30 AM EDT
Active, not recruiting Not applicable Interventional Results available
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 – 2025
U.S. locations
54
States / cities
Scottsdale, Arizona • Jonesboro, Arkansas • Little Rock, Arkansas + 44 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2025 · Synced May 22, 2026, 12:30 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Autonomic Nervous System Diseases
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
335 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1994 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 22, 2026, 12:30 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Neurocardiogenic Syncope, Vasovagal Syncope
Interventions
Cardioneuroablation, Biosense Webster Navistar ThermoCool Diagnostic/Ablation Deflectable Tip Catheter
Procedure · Device
Lead sponsor
David B. De Lurgio
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
2
States / cities
Atlanta, Georgia • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 3, 2016 · Synced May 22, 2026, 12:30 AM EDT