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ClinicalTrials.gov public records Last synced Oct 21, 2026, 7:24 AM EDT

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Showing 1–24 of 372 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Heart Rate Fast Clear all
Recruiting Not applicable Interventional

Cardiac RADIoablation Versus Repeat Catheter Ablation: a Pivotal Randomized Clinical Trial Evaluating Safety and Efficacy for Patients With High-risk Refractory Ventricular Tachycardia (RADIATE-VT)

NCT05765175
View directory record Official record
Conditions
Tachycardia, Ventricular
Interventions
Varian Cardiac Radioablation (CRA), Catheter Ablation (CA)
Device · Procedure
Lead sponsor
Varian, a Siemens Healthineers Company
Industry
Eligibility
18 Years and older
Enrollment
380 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
11
States / cities
Los Angeles, California • Hartford, Connecticut • Boston, Massachusetts + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Oct 21, 2026, 7:24 AM EDT
Completed No phase listed Observational

Brain Perfusion and Hemodynamic Stability in Patients Undergoing Radiofrequency Ablation of Ventricular Tachycardia

NCT01695551
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Data Collection Forms
Other
Lead sponsor
Dhanunjaya Lakkireddy, MD, FACC
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 9, 2017 · Synced Oct 21, 2026, 7:24 AM EDT
Recruiting No phase listed Observational

Baseline Atrial Fibrosis Predicts Risk for Post-operative Atrial Fibrillation in Patients Undergoing Cardiac Surgery

NCT05014802
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Arrhythmia, Atrial Flutter, Atrial Tachycardia
Interventions
Not listed
Lead sponsor
Tulane University
Other
Eligibility
40 Years to 120 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
3
States / cities
Covington, Louisiana • New Orleans, Louisiana • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Oct 21, 2026, 7:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Heart Rate Variability in Children With a Functional Gastrointestinal Disorder

NCT00195975
View directory record Official record
Conditions
Abdominal Pain
Interventions
Not listed
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
8 Years to 17 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 28, 2011 · Synced Oct 21, 2026, 7:24 AM EDT
Withdrawn No phase listed Observational

The Ability Of The PD2i Cardiac Analyzer To Predict Risk Of Ventricular Tachyarrhythmic Events

NCT00510731
View directory record Official record
Conditions
Tachycardia, Ventricular, Cardiac Sudden Death
Interventions
Not listed
Lead sponsor
Vicor Technologies, Inc.
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
19
States / cities
Los Angeles, California • San Ramon, California • Walnut Creek, California + 14 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2015 · Synced Oct 21, 2026, 7:24 AM EDT
Completed Phase 2Phase 3 Interventional Results available

A Clinical Trial Utilizing Dantrolene in Patients With Ventricular Arrhythmias.

NCT04134845
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Dantrolene/Ryanodex, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 21, 2026, 7:24 AM EDT
Completed Phase 2 Interventional

Study of Natriuretic Peptide Receptor 1 (NPR1) Antagonist in Adult Patients With Postural Orthostatic Tachycardia Syndrome (POTS)

NCT06593600
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome (POTS)
Interventions
REGN7544, Placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
15
States / cities
Gilbert, Arizona • Carlsbad, California • Palo Alto, California + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 21, 2026, 7:24 AM EDT
Active, not recruiting Not applicable Interventional

Rapid Entrainment and Signal-guided Neuromodulation for Behavioral Health

NCT07812987
View directory record Official record
Conditions
Anxiety, PTSD, ADHD, Depression Disorders, Post-traumatic Stress, Substance Use, Executive Function, Sleep Disturbance
Interventions
AIP-Informed Integrative Psychotherapy, Transcutaneous Auricular Vagus Nerve Stimulation, Regulated Breathing and Autonomic Regulation, Audiovisual Entrainment, Vibroacoustic Stimulation, Breathwork-Based Auditory Driving Entropy Module (BADEM), Transcranial Electrical Stimulation
Behavioral · Device
Lead sponsor
Tactical Mind Research Coalition, Inc.
Other
Eligibility
18 Years to 70 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 21, 2026, 7:24 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, 7:24 AM EDT
Withdrawn Early Phase 1 Interventional

Comparison of Ventricular Tachycardia Ablation Strategies in Patients With Ischemic Cardiomyopathy

NCT04512911
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Endocardial ablation, Endocardial- Epicardial ablation, Antiarrhythmic medications
Procedure · Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years to 99 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Oct 6, 2023 · Synced Oct 21, 2026, 7:24 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Autonomic Nervous System and Chronic Fatigue Syndrome

NCT00580619
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Orthostatic Intolerance, Postural Tachycardia Syndrome
Interventions
Autonomic Function Testing, Saline infusions, L-NMMA trimethaphan, methyldopa
Other · Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years
Enrollment
170 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Oct 21, 2026, 7:24 AM EDT
Completed Phase 2Phase 3 Interventional

Safety and Effectiveness of Cardiac Resynchronization Therapy With Defibrillation

NCT00387803
View directory record Official record
Conditions
Heart Failure, Congestive, Ventricular Fibrillation, Tachycardia, Ventricular
Interventions
Cardiac Resynchronization Therapy with Defibrillation
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
Not listed
Enrollment
581 participants
Timeline
1998 – 2001
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 25, 2007 · Synced Oct 21, 2026, 7:24 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Autoimmune Basis for Postural Tachycardia Syndrome

NCT02725060
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Postural Tachycardia Syndrome, Tachycardia, Arrhythmias, Cardiac, Autonomic Nervous System Diseases, Orthostatic Intolerance, Cardiovascular Diseases, Primary Dysautonomias
Interventions
phenylephrine, isoproterenol, 25 micro-Ci of radiation, Posture study with blood samples, 24-hour heart rhythm and blood pressure monitoring, Quantitative Axonal Sudomotor Reflex Testing, Autonomic function tests, Rebreathing test, Assessment of splanchnic capacitance, microneurography
Drug · Radiation · Procedure + 1 more
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
2
States / cities
Oklahoma City, Oklahoma • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 12, 2025 · Synced Oct 21, 2026, 7:24 AM EDT
Recruiting Phase 2 Interventional

Venous Ethanol for Ventricular Tachycardia

NCT05511246
View directory record Official record
Conditions
Ventricular Tachycardia, Ischemic Cardiomyopathy
Interventions
Venous ethanol, Catheter ablation
Drug · Procedure
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years to 85 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 21, 2026, 7:24 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Mayo AVC Registry and Biobank

NCT03049254
View directory record Official record
Conditions
Arrhythmogenic Right Ventricular Cardiomyopathy, Cardiomyopathies, Heart Diseases, Cardiovascular Diseases, Sudden Cardiac Arrest, Sudden Cardiac Death, Arrhythmogenic Right Ventricular Dysplasia, Arrhythmogenic Ventricular Cardiomyopathy, Familial Dilated Cardiomyopathy, Cardiovascular Abnormalities, Sarcoidosis, Cardiac Arrhythmia, Cardiac Sarcoidosis, Myocarditis, Inflammatory Cardiomyopathy, Ventricular Tachycardia, Right Ventricular Outflow Tract Ventricular Tachycardia
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
Not listed
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 21, 2026, 7:24 AM EDT
Completed No phase listed Observational

iPod and Other MP3 Players on ICDs and Pacemakers in Children

NCT00542854
View directory record Official record
Conditions
Heart Block, Bradycardia, Tachycardia, Arrhythmia
Interventions
MP3
Device
Lead sponsor
Boston Children's Hospital
Other
Eligibility
4 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 28, 2009 · Synced Oct 21, 2026, 7:24 AM EDT
Terminated Not applicable Interventional

Unpinning Termination Therapy for VT (US)

NCT03093051
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Unpinning Termination therapy
Device
Lead sponsor
Cardialen, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
7
States / cities
Sacramento, California • Des Moines, Iowa • Minneapolis, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 10, 2022 · Synced Oct 21, 2026, 7:24 AM EDT
Recruiting Phase 4 Interventional

Adenosine vs Diltiazem for Treatment of SVT in the ED

NCT06993038
View directory record Official record
Conditions
Supraventricular Tachycardia (SVT)
Interventions
adenosine, diltiazem
Drug
Lead sponsor
Anne E. Zepeski
Other
Eligibility
18 Years to 100 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 21, 2026, 7:24 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 21, 2026, 7:24 AM EDT
Active, not recruiting Not applicable Interventional

Transdermal Vagal Stimulation for POTS

NCT02281097
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Stimulation, Placebo
Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 75 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 21, 2026, 7:24 AM EDT
Completed Not applicable Interventional Results available

Inducibility and Stability of Ventricular Tachycardia Inpatients Undergoing VT Ablation Under General Anesthesia

NCT02419547
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Versed, Fentanyl, Propofol, Sevoflurane
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 9, 2019 · Synced Oct 21, 2026, 7:24 AM EDT
Enrolling by invitation No phase listed Observational

IVTCC 2.0: A Prospective Multicenter Ventricular Tachycardia Catheter Ablation Registry

NCT04520347
View directory record Official record
Conditions
Ventricular Arrhythmia, Ventricular Tachycardia, Premature Ventricular Contraction (PVC), Cardiomyopathy
Interventions
Not listed
Lead sponsor
University of California, Los Angeles
Other
Eligibility
Not listed
Enrollment
10,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
34
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 25 more
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Oct 21, 2026, 7:24 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate QTc Prolongation With Quizartinib in Healthy Subjects Under Rapid Acceleration of Heart Rate

NCT06772246
View directory record Official record
Conditions
Healthy Subjects
Interventions
Quizartinib, Placebo
Drug · Other
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years to 55 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Aug 1, 2025 · Synced Oct 21, 2026, 7:24 AM EDT
Completed Phase 3 Interventional Results available

Amiodarone, Lidocaine or Neither for Out-Of-Hospital Cardiac Arrest Due to Ventricular Fibrillation or Tachycardia

NCT01401647
View directory record Official record
Conditions
Cardiac Arrest
Interventions
amiodarone, Lidocaine, Normal saline
Drug · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
3,024 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
7
States / cities
Birmingham, Alabama • San Diego, California • Portland, Oregon + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Oct 21, 2026, 7:24 AM EDT