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Showing 1–24 of 364 matching trials from the live ClinicalTrials.gov search.
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Completed No phase listed Observational

Medtronic Genetic Arrhythmia Markers for Early Detection (GAME Study)

NCT00664807
View directory record Official record
Conditions
Death, Sudden, Cardiac, Ventricular Fibrillation, Tachycardia, Atrial Fibrillation, Sick Sinus Syndrome
Interventions
Not listed
Lead sponsor
Medtronic Corporate Technologies and New Ventures
Industry
Eligibility
40 Years and older
Enrollment
1,023 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Aug 24, 2009 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional

Proton Particle Therapy for Cardiac Arrhythmia

NCT04392193
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
Proton Particle Therapy
Radiation
Lead sponsor
Konstantinos Siontis
Other
Eligibility
18 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 14, 2025 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional

CyberHeart's Cardiac Arrhythmia Ablation Treatment: Patients With Refractory Ventricular Tachycardia/Fibrillation

NCT02661048
View directory record Official record
Conditions
Tachycardia, Ventricular
Interventions
CyberHeart System
Device
Lead sponsor
Varian, a Siemens Healthineers Company
Industry
Eligibility
60 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 6, 2023 · Synced Jul 21, 2026, 4:41 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Derivation of Human Induced Pluripotent Stem (iPS) Cells to Heritable Cardiac Arrhythmias

NCT02413450
View directory record Official record
Conditions
Inherited Cardiac Arrythmias, Long QT Syndrome (LQTS), Brugada Syndrome (BrS), Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT), Early Repolarization Syndrome (ERS), Arrhythmogenic Cardiomyopathy (AC, ARVD/C), Hypertrophic Cardiomyopathy (HCM), Dilated Cardiomyopathy (DCM), Muscular Dystrophies (Duchenne, Becker, Myotonic Dystrophy), Normal Control Subjects
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 85 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2031
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Results available

AV Delay Optimization vs. Intrinsic Conduction in Pacemaker Patients With Long PR Intervals

NCT02154750
View directory record Official record
Conditions
Atrioventricular Block, Sick Sinus Syndrome, Symptomatic Bradycardia, Cardiac Arrhythmia
Interventions
Long, fixed AV delay, Short, optimized AV delay
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional Results available

CryoCath Freezor CryoAblation Catheter System (CRYOFACTS)

NCT00621621
View directory record Official record
Conditions
Tachycardia, Atrioventricular Nodal Reentry
Interventions
Freezor® Cardiac Cryoablation Catheter CryoConsole System
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
4
States / cities
Minneapolis, Minnesota • Omaha, Nebraska • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2018 · Synced Jul 21, 2026, 4:41 PM 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 24, 2022 · Synced Jul 21, 2026, 4:41 PM EDT
Terminated No phase listed Observational

Impact of Tachycardia on Outcome After Subarachnoid Hemorrhage (SAH)

NCT01585311
View directory record Official record
Conditions
Subarachnoid Hemorrhage (SAH), Tachycardia
Interventions
Not listed
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
1,540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 9, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional Results available

RIGHT: Rhythm ID Going Head-to-Head Trial

NCT00148954
View directory record Official record
Conditions
Tachycardia
Interventions
VITALITY 2 Implantable Cardioverter Defibrillator, Medtronic Implantable Cardioverter Defibrillator
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
1,962 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 11, 2012 · Synced Jul 21, 2026, 4:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Determine the Incidence of Long QT Amongst a Large Cohort of Subjects Diagnosed With Unilateral or Bilateral Sensorineural Hearing Loss.

NCT02082431
View directory record Official record
Conditions
Sensorineural Hearing Loss, Long QT Syndrome
Interventions
Not listed
Lead sponsor
Pediatrix
Other
Eligibility
1 Day to 90 Days
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
12
States / cities
Anchorage, Alaska • Phoenix, Arizona • Waterford, Connecticut + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 4, 2020 · Synced Jul 21, 2026, 4:41 PM 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 26, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional

AIMIGo 12L ECG Synthesis Software Pivotal Study for Arrythmia Detection

NCT06123130
View directory record Official record
Conditions
Arrhythmias, Cardiac, Atrial Fibrillation, Atrial Flutter, Bradycardia, Tachycardia
Interventions
Vectorcardiography (VECG)
Device
Lead sponsor
HeartBeam, Inc.
Industry
Eligibility
18 Years and older
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
5
States / cities
Atlanta, Georgia • Tucker, Georgia • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 4, 2024 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Magnesium Supplementation for the Prevention of Supraventricular Arrhythmias

NCT02837328
View directory record Official record
Conditions
Premature Atrial Contraction
Interventions
Oral Magnesium Supplement, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
55 Years and older
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Influence of Testosterone Administration on Drug-Induced QT Interval Prolongation and Torsades de Pointes

NCT02513940
View directory record Official record
Conditions
Long QT Syndrome
Interventions
Testosterone, Progesterone, Placebo, Ibutilide
Drug
Lead sponsor
Indiana University
Other
Eligibility
65 Years and older · Male only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 27, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Completed No phase listed Observational

Propagation ANalysis for Arrhythmogenic Conduction Elimination to Prevent Atrial Flutter and Fibrillation (PANACEA-AF)

NCT03737838
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Atrial fibrillation ablation
Device
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional

Syncope: Pacing or Recording in the Later Years

NCT01423994
View directory record Official record
Conditions
Syncope, Heart Block, Conduction Disorder of the Heart
Interventions
pacemaker, implantable loop recorder
Procedure
Lead sponsor
Canadian Institutes of Health Research (CIHR)
Government
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 15, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Active, not recruiting Early Phase 1 Interventional

Modafinil and Cognitive Function in POTS

NCT01988883
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Placebo, Modafinil, Propranolol
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Etripamil for the Termination of Spontaneous Paroxysmal Supraventricular Tachycardia (PSVT).

NCT03464019
View directory record Official record
Conditions
Paroxysmal Supraventricular Tachycardia
Interventions
Etripamil, Placebo, Etripamil Test Dose
Drug
Lead sponsor
Milestone Pharmaceuticals Inc.
Other
Eligibility
18 Years and older
Enrollment
1,097 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
54
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Cerritos, California + 44 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Jul 21, 2026, 4:41 PM EDT
Completed No phase listed Observational

NTX Wireless Patient Monitoring System

NCT00654693
View directory record Official record
Conditions
Desaturation, Bradycardia, Tachycardia, Hypertension, Hypotension
Interventions
Rapid Response Team
Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 6, 2012 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Results available

Inappropriate Shock Reduction wIth PARAD+ Rhythm DiScrimination

NCT01410552
View directory record Official record
Conditions
Tachycardia
Interventions
PARADYM DR model 8550; PARADYM CRT model 8750; PARADYM RF DR model 9550; PARADYM RF CRT model 9750; PARADYM RF CRT SonR model 9770
Device
Lead sponsor
MicroPort CRM
Industry
Eligibility
18 Years and older
Enrollment
1,013 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
27
States / cities
Mesa, Arizona • Peoria, Arizona • Phoenix, Arizona + 23 more
Source: ClinicalTrials.gov public record
Updated Mar 21, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Results available

Biventricular Versus Right Ventricular Pacing in Heart Failure Patients With Atrioventricular Block (BLOCK HF)

NCT00267098
View directory record Official record
Conditions
Atrioventricular Block, Heart Diseases
Interventions
Cardiac Resynchronization Therapy (CRT)
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
918 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2013
U.S. locations
51
States / cities
Anchorage, Alaska • Peoria, Arizona • Little Rock, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2014 · Synced Jul 21, 2026, 4:41 PM EDT
Terminated Early Phase 1 Interventional Results available

Post-Acute Sequelae of Coronavirus-19 (COVID-19) With Dyspnea on Exertion And Associated TaChycardia TrEatment Study

NCT05096884
View directory record Official record
Conditions
Tachycardia, Dyspnea, COVID-19
Interventions
Metoprolol Succinate
Drug
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years to 40 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 2, 2024 · Synced Jul 21, 2026, 4:41 PM EDT
Not yet recruiting Not applicable Interventional

Cryoablation for Monomorphic Ventricular Tachycardia (VTS)

NCT07650032
View directory record Official record
Conditions
Ventricular Tachycardia, Sustained, Ventricular Tachycardia, Monomorphic
Interventions
Ultra Low Temperature Ablation (ULTA)
Device
Lead sponsor
Adagio Medical
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
8
States / cities
Phoenix, Arizona • Long Beach, California • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Completed No phase listed Observational

Novel Cardiac Signal Processing System

NCT04112433
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
PURE EP 2
Device
Lead sponsor
BioSig Technologies, Inc.
Industry
Eligibility
18 Years and older
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
3
States / cities
Jacksonville, Florida • Boston, Massachusetts • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Feb 10, 2022 · Synced Jul 21, 2026, 4:41 PM EDT