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ClinicalTrials.gov public records Last synced Oct 20, 2026, 4:54 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 85 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Syncope Clear all
Active, not recruiting No phase listed Observational

Aveir VR Real-World Evidence Post-Approval Study

NCT05270499
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 20, 2026 · Synced Oct 20, 2026, 4:54 AM EDT
Completed No phase listed Observational

Data Collection - Of Syncope Tilt Table Testing Study

NCT03721393
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 2, 2023 · Synced Oct 20, 2026, 4:54 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 20, 2026, 4:54 AM EDT
Terminated Phase 2 Interventional

Study Evaluating GAP-486 in Heart Rhythm

NCT00137293
View directory record Official record
Conditions
Arrhythmia
Interventions
GAP-486 (ZP-123), 0.9% Sodium Chloride, USP
Drug
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
3
States / cities
San Francisco, California • Washington D.C., District of Columbia • Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 10, 2007 · Synced Oct 20, 2026, 4:54 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Preventing Negative Reactions in First Time Blood Donors to Encourage Subsequent Blood Donations

NCT00302900
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 6, 2016 · Synced Oct 20, 2026, 4:54 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 20, 2026, 4:54 AM EDT
Recruiting No phase listed Observational

Genetic Markers of Cardiovascular Disease in Epilepsy

NCT02824822
View directory record Official record
Conditions
Epilepsy, Seizures, Syncope, Channelopathy, Cardiomyopathies
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 50 Years
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2031
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Oct 20, 2026, 4:54 AM EDT
Completed No phase listed Observational

Assert-IQ Implantable Cardiac Monitor (ICM) Post Market Study

NCT06172699
View directory record Official record
Conditions
Atrial Fibrillation Paroxysmal, Atrial Fibrillation, Persistent, Cardiac Arrhythmia, Ablation
Interventions
Holter monitoring in patients who have been successfully implanted with an Abbott Assert-IQ ICM device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years to 100 Years
Enrollment
151 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
11
States / cities
San Diego, California • Orlando, Florida • Overland Park, Kansas + 8 more
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 20, 2026, 4:54 AM EDT
Terminated Phase 2 Interventional Results available

Safety, Pharmacokinetics and Efficacy Study of QCC374 in PAH Patients

NCT02927366
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
QCC374, Placebo Matching
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 5, 2021 · Synced Oct 20, 2026, 4:54 AM EDT
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 20, 2026, 4:54 AM EDT
Completed Not applicable Interventional

Impact of Immediate Point-of-Care Ultrasound on Patients With Cardiopulmonary Symptoms in the Emergency Department

NCT02861508
View directory record Official record
Conditions
Chest Pain, Dyspnea, Syncope, Hypotension
Interventions
Point-of-care ultrasound, Usual care
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 28, 2020 · Synced Oct 20, 2026, 4:54 AM EDT
Not listed No phase listed Observational

Observational Study of the Sleuth Implantable ECG Monitoring System

NCT00717106
View directory record Official record
Conditions
Syncope, Presyncope, Fainting, Cardiac Arrhythmia
Interventions
Not listed
Lead sponsor
Transoma Medical
Industry
Eligibility
Not listed
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
8
States / cities
Atlanta, Georgia • Cumberland, Maryland • Lapeer, Michigan + 5 more
Source: ClinicalTrials.gov public record
Updated May 5, 2009 · Synced Oct 20, 2026, 4:54 AM EDT
Not listed No phase listed Observational

Comparison of Continuous Sternal ECG Patch Monitors (Carnation and Zio) Trial

NCT02031484
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 7, 2016 · Synced Oct 20, 2026, 4:54 AM EDT
Active, not recruiting No phase listed Observational

BAsel Syncope EvaLuation (BASEL IX) Study

NCT01548352
View directory record Official record
Conditions
Syncope
Interventions
Not listed
Lead sponsor
University Hospital, Basel, Switzerland
Other
Eligibility
40 Years and older
Enrollment
3,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 15, 2025 · Synced Oct 20, 2026, 4:54 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 20, 2026, 4:54 AM EDT
Completed No phase listed Observational

The U.K. Embryologist Fatigue Study

NCT05708963
View directory record Official record
Conditions
Fatigue, Stress, Burnout, Professional, Musculoskeletal Pain, Back Pain, Neck Pain, Headache, Dizziness, Sleep Disturbance, Chest Pain, Syncope, Cardiovascular Diseases, Shortness of Breath, Gastrointestinal Diseases
Interventions
Not listed
Lead sponsor
TMRW Life Sciences
Industry
Eligibility
22 Years to 65 Years
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 8, 2023 · Synced Oct 20, 2026, 4:54 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 20, 2026, 4:54 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Comparative Study of the Sternal Patch System With a Conventional Holter Recorder

NCT04241692
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 28, 2022 · Synced Oct 20, 2026, 4:54 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 20, 2026, 4:54 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 20, 2026, 4:54 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 20, 2026, 4:54 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 20, 2026, 4:54 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Mechanisms of Vasovagal Syncope

NCT01791816
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 23, 2025 · Synced Oct 20, 2026, 4:54 AM EDT
Completed Phase 2 Interventional

Non-Pharmacologic Therapy for Neurocardiogenic Syncope

NCT00096902
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 2, 2017 · Synced Oct 20, 2026, 4:54 AM EDT