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ClinicalTrials.gov public records Last synced Oct 22, 2026, 3:31 AM EDT

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Showing 193–216 of 372 matching trials from the live ClinicalTrials.gov search.
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Terminated Phase 1 Interventional

High Sodium Diet and External Abdominal Compression in POTS

NCT01771484
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
External automated abdominal binder
Device
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 60 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Oct 22, 2026, 3:31 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Defining the Risk of Ventricular Tachycardia in Genetic Forms of Early-onset Atrial Fibrillation

NCT06647459
View directory record Official record
Conditions
Ventricular Tachycardia, Atrial Fibrillation
Interventions
EP Study
Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Phase 2 Interventional Results available

Evaluating Ventricular Arrhythmia in Subjects With Implantable Cardioverter Defibrillator or Cardiac Resynchronization Therapy-Defibrillator

NCT02104583
View directory record Official record
Conditions
Ventricular Arrhythmia
Interventions
Eleclazine, Placebo to match eleclazine
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 80 Years
Enrollment
313 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
37
States / cities
Mesa, Arizona • Long Beach, California • Los Angeles, California + 32 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2019 · Synced Oct 22, 2026, 3:31 AM EDT
Terminated Not applicable Interventional Results available

Randomized Double Blind Control Trial on Effects of Ranolazine on New Onset Atrial Fibrillation

NCT01590979
View directory record Official record
Conditions
Atrial Fibrillation New Onset, Hemorrhage, Prolonged QTc Interval, Ventricular Tachycardia, Medical Care; Complications, Late Effect of Complications
Interventions
Ranolazine, Placebo
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Staten Island, New York
Source: ClinicalTrials.gov public record
Updated Mar 23, 2017 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Not applicable Interventional Results available

Safety and Clinical Performance of the Protecta ICD and CRT-D

NCT00982397
View directory record Official record
Conditions
Tachyarrhythmias, Heart Failure, Ventricular Dysfunction
Interventions
Protecta VR-ICD, Protecta DR-ICD or CRT-D
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
2,770 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
29
States / cities
Birmingham, Alabama • Mesa, Arizona • Fort Smith, Arkansas + 26 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2017 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety Study of Efgartigimod in Adults With Post-COVID-19 POTS

NCT05633407
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Efgartigimod, Placebo
Drug
Lead sponsor
argenx
Industry
Eligibility
18 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
11
States / cities
La Jolla, California • Palo Alto, California • Glenview, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Not applicable Interventional Results available

Stereotactic Ablative Radiotherapy for Refractory Ventricular Tachycardia

NCT03349892
View directory record Official record
Conditions
Refractory Ventricular Tachycardia
Interventions
Stereotactic Ablative Radiotherapy (SABR)
Radiation
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 15, 2021 · Synced Oct 22, 2026, 3:31 AM EDT
Recruiting Not applicable Interventional

The Long COVID-19 Wearable Device Study

NCT05741112
View directory record Official record
Conditions
Long COVID, Postural Orthostatic Tachycardia Syndrome, Dysautonomia, Myalgic Encephalomyelitis, Chronic Fatigue Syndrome, Long Covid19
Interventions
Wearable device
Device
Lead sponsor
Scripps Translational Science Institute
Other
Eligibility
18 Years and older
Enrollment
100,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 11, 2025 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Phase 4 Interventional Results available

Antiarrhythmic Effects of Spironolactone in Patients With ICDs

NCT04495712
View directory record Official record
Conditions
Ventricular Arrhythmias
Interventions
spironolactone, placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 9, 2020 · Synced Oct 22, 2026, 3:31 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Hemodynamic Response of Neuropathic And Non-Neuropathic POTS Patients To Adrenoreceptor Agonist And Antagonist

NCT03070730
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Orthostatic Intolerance
Interventions
Droxidopa, Atenolol, Placebos
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 55 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 18, 2017 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Salt in Postural Tachycardia Syndrome

NCT01547117
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Blood Volume, Total Blood Volume, Exercise Capacity Test - Bicycle, Posture Study
Radiation · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 50 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 22, 2022 · Synced Oct 22, 2026, 3:31 AM EDT
Terminated Phase 3 Interventional Results available

Mental Stress Reduction in Defibrillator Patients

NCT00624520
View directory record Official record
Conditions
Cardiomyopathy, Dilated, Arrhythmia, Anger, Stress
Interventions
Cognitive Behavioral Stress Management (CBSM), Patient Education
Behavioral · Other
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
21 Years to 85 Years
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 22, 2014 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Not applicable Interventional Results available

Understanding Outcomes With the EMBLEM™ S-ICD in Primary Prevention Patients With Low Ejection Fraction

NCT02433379
View directory record Official record
Conditions
Ventricular Fibrillation, Ventricular Tachycardia, Low Cardiac Output
Interventions
EMBLEM S-ICD System
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
21 Years and older
Enrollment
1,173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
69
States / cities
Birmingham, Alabama • Huntsville, Alabama • Gilbert, Arizona + 62 more
Source: ClinicalTrials.gov public record
Updated Mar 24, 2025 · Synced Oct 22, 2026, 3:31 AM EDT
Not yet recruiting Not applicable Interventional

The Impact of Improved Vagal Function on Periaqueductal Gray Connectivity

NCT05618067
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
breathing exercise training
Behavioral
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2028
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 22, 2026, 3:31 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Acetaminophen for Fetal Tachycardia: a Randomized Pilot Trial

NCT00377832
View directory record Official record
Conditions
Fever, Heart Rate, Fetal (FHR)
Interventions
Acetaminophen 975 mg
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Flushing, New York
Source: ClinicalTrials.gov public record
Updated Sep 16, 2013 · Synced Oct 22, 2026, 3:31 AM EDT
Completed No phase listed Observational

St. Jude Medical Product Longevity and Performance (SCORE) Registry

NCT01754064
View directory record Official record
Conditions
Bradycardia, Tachycardia, Heart Disease
Interventions
Cardiac Rhythm Management device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
10,957 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2020
U.S. locations
80
States / cities
Huntsville, Alabama • Mobile, Alabama • Anchorage, Alaska + 72 more
Source: ClinicalTrials.gov public record
Updated May 11, 2021 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Sodium's Effect on Urinary Sodium and Dopamine Excretion in Patients With Postural Tachycardia Syndrome

NCT01563107
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Plasma Volume, Exercise Capacity Test - Bicycle, Posture Study
Radiation · Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 25, 2022 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Phase 4 Interventional Results available

Stereotaxis Study To Obliterate Persistent Ventricular Tachycardia

NCT00851279
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Magnetic irrigated ablation catheter
Device
Lead sponsor
Stereotaxis
Industry
Eligibility
18 Years to 80 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
2
States / cities
Indianapolis, Indiana • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 24, 2015 · Synced Oct 22, 2026, 3:31 AM EDT
Recruiting Phase 2 Interventional

Effect of 2-HOBA in Persistent Immune Activation in Long COVID POTS

NCT07189936
View directory record Official record
Conditions
Post-Acute COVID-19 Syndrome, Postural Tachycardia Syndrome (POTS), SARS CoV 2 Infection, Long COVID19
Interventions
To Measure levels of circulating monocyte/ T cell doublets at Baseline, To measure levels of circulating monocyte/ T cell doublets after 28 days of 2 HOBA treatment, To measure levels of circulating monocyte/ T cell doublets after 28 days of Placebo treatment, To Measure Splanchnic venous capacitance after 28 days of Treatment with 2HOBA, To Measure Splanchnic venous capacitance after 28 days of Treatment with Placebo, To Measure Orthostatic Tachycardia after 28 days of Treatment with 2HOBA, To Measure Orthostatic Tachycardia after 28 days of Treatment with Placebo
Drug · Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 22, 2026, 3:31 AM EDT
Completed Not applicable Interventional Results available

Dexmedetomidine and Adenosine: Therapeutic Use for SVT

NCT01495481
View directory record Official record
Conditions
Supraventricular Tachycardia
Interventions
Dexmedetomidine, Adenosine
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
5 Years to 30 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 28, 2017 · Synced Oct 22, 2026, 3:31 AM EDT
Recruiting Not applicable Interventional

Programmed Ventricular Stimulation to Risk Stratify for Early Cardioverter-Defibrillator (ICD) Implantation to Prevent Tachyarrhythmias Following Acute Myocardial Infarction (PROTECT-ICD)

NCT03588286
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
Electrophysiology study (EPS), Standard Care, Cardiac Magnetic Resonance (CMR)
Procedure · Other
Lead sponsor
Western Sydney Local Health District
Other
Eligibility
18 Years to 85 Years
Enrollment
1,058 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 7, 2024 · Synced Oct 22, 2026, 3:31 AM EDT
Active, not recruiting No phase listed Observational

Abbott Ventricular Tachycardia PAS

NCT05839873
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
FlexAbility SE Ablation Catheter
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
7 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
11
States / cities
Naples, Florida • Indianapolis, Indiana • Overland Park, Kansas + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 22, 2026, 3:31 AM EDT
Terminated No phase listed Observational

SHERLOCK 3CG™ Diamond Tip Confirmation System

NCT03288766
View directory record Official record
Conditions
Indication for Peripheral Intravenous Catheterization, Atrial Flutter, Premature Atrial Contraction, Premature Ventricular Contraction, Premature Junctional Contraction, Tachycardia, Atrioventricular Block, Bundle-Branch Block
Interventions
PICC placement with SHERLOCK 3CG™ Diamond TCS with MODUS II software
Procedure
Lead sponsor
C. R. Bard
Industry
Eligibility
21 Years and older
Enrollment
232 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
6
States / cities
Las Vegas, Nevada • Greensboro, North Carolina • Greenville, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2021 · Synced Oct 22, 2026, 3:31 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

POTS NET mRNA Functional Correlation With NET Activity

NCT03218761
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
NET mRNA level, Plasma catechols, Urine Catechols
Diagnostic Test
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
13 Years to 80 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 22, 2026, 3:31 AM EDT