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ClinicalTrials.gov public records Last synced Oct 26, 2026, 2:10 AM EDT

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Showing 169–192 of 370 matching trials from the live ClinicalTrials.gov search.
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Terminated Phase 3 Interventional Results available

Safety Study of Intranasal Etripamil for the Termination of Spontaneous Episodes of Paroxysmal Supraventricular Tachycardia (PSVT). NODE-302

NCT03635996
View directory record Official record
Conditions
Paroxysmal Supraventricular Tachycardia
Interventions
Etripamil NS 70 mg, Aptar Pharma Nasal Spray Bidose System
Drug · Device
Lead sponsor
Milestone Pharmaceuticals Inc.
Other
Eligibility
18 Years and older
Enrollment
169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
22
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Alamitos, California + 18 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2024 · Synced Oct 26, 2026, 2:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Oral GS-6615 on Dofetilide-Induced QT Prolongation, Safety, and Tolerability in Healthy Adults

NCT02365532
View directory record Official record
Conditions
Long QT Syndrome
Interventions
GS-6615, Placebo to match GS-6615, Placebo to match dofetilide, Dofetilide
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 40 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 20, 2015 · Synced Oct 26, 2026, 2:10 AM EDT
Completed No phase listed Observational Results available

Tachy Prediction Download Study

NCT03402126
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
TPD RAMWare
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
15
States / cities
Los Angeles, California • Des Moines, Iowa • Royal Oak, Michigan + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 16, 2021 · Synced Oct 26, 2026, 2:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Phase 1 Study of LQT-1213 in Healthy Adults

NCT05759962
View directory record Official record
Conditions
Long QT Syndrome
Interventions
LQT-1213, Placebo
Drug · Other
Lead sponsor
Thryv Therapeutics, Inc.
Industry
Eligibility
18 Years to 60 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Sep 26, 2023 · Synced Oct 26, 2026, 2:10 AM EDT
Active, not recruiting No phase listed Observational

Cardiac Implantable Electronic Device (CIED) Research Study

NCT05061862
View directory record Official record
Conditions
Arrhythmias, Cardiac, Bradycardia, Tachycardia
Interventions
cardiac implantable electronic devices (CIEDs)
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Timeline
2022 – 2026
U.S. locations
8
States / cities
Gainesville, Florida • Macon, Georgia • Portland, Oregon + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Oct 26, 2026, 2:10 AM EDT
Completed No phase listed Observational

Study of the Wearable Defibrillator in Heart-Failure Patients

NCT01326624
View directory record Official record
Conditions
Heart Failure, Ventricular Dysfunction, Sudden Death, Sudden Cardiac Arrest, Ventricular Tachycardia, Ventricular Fibrillation
Interventions
wearable defibrillator (LifeVest)
Device
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 6, 2017 · Synced Oct 26, 2026, 2:10 AM EDT
Completed No phase listed Observational Results available

Ondansetron and the QT Interval In Adult Emergency Department Patients

NCT01759420
View directory record Official record
Conditions
Ondansetron
Interventions
Ondansetron
Drug
Lead sponsor
C.R.Darnall Army Medical Center
Federal
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
2
States / cities
Fort Hood, Texas • Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jun 26, 2014 · Synced Oct 26, 2026, 2:10 AM EDT
Completed Not applicable Interventional Results available

Atropine in Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT)

NCT02927223
View directory record Official record
Conditions
Catecholaminergic Polymorphic Ventricular Tachycardia
Interventions
Atropine, Exercise treadmill test
Drug · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
6 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 28, 2020 · Synced Oct 26, 2026, 2:10 AM EDT
Completed No phase listed Observational

Surface ECG Signal Recording for the Implantable Subcutaneous String Defibrillator (ISSD) Detection Algorithm Performance Assessment

NCT03408951
View directory record Official record
Conditions
Tachyarrhythmia, Arrhythmias, Cardiac
Interventions
Recording
Other
Lead sponsor
NewPace Ltd
Industry
Eligibility
18 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Roslyn, New York
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Oct 26, 2026, 2:10 AM EDT
Recruiting Not applicable Interventional

Electroanatomic Interactions Between Transcatheter Pulmonary Valve Prostheses and Anatomic Isthmuses in Repaired Tetralogy of Fallot

NCT05236153
View directory record Official record
Conditions
Tetralogy of Fallot, Ventricular Tachycardia, Sudden Cardiac Death
Interventions
Electroanatomic substrate mapping
Diagnostic Test
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 8, 2023 · Synced Oct 26, 2026, 2:10 AM EDT
Completed Phase 2 Interventional Results available

Ranolazine Mediated PVC Reduction in Ischemic Heart Disease

NCT02360397
View directory record Official record
Conditions
Ventricular Premature Complexes, Myocardial Ischemia
Interventions
ranolazine
Drug
Lead sponsor
Kent Hospital, Rhode Island
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Warwick, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jan 29, 2020 · Synced Oct 26, 2026, 2:10 AM EDT
Terminated No phase listed Observational

Stereotaxis Idiopathic Ventricular Tachycardia (VT) Study

NCT01401608
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
RF Ablation
Device
Lead sponsor
Stereotaxis
Industry
Eligibility
18 Years to 80 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 20, 2015 · Synced Oct 26, 2026, 2:10 AM EDT
Completed No phase listed Observational

DF4 Connector System Post-Approval Study

NCT01638897
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Sudden Cardiac Death, Heart Failure
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
1,778 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
72
States / cities
Birmingham, Alabama • Anchorage, Alaska • Gilbert, Arizona + 69 more
Source: ClinicalTrials.gov public record
Updated Mar 20, 2019 · Synced Oct 26, 2026, 2:10 AM EDT
Completed No phase listed Observational

Exercise in Genetic Cardiovascular Conditions

NCT02549664
View directory record Official record
Conditions
Hypertrophic Cardiomyopathy, Long QT Syndrome
Interventions
Not listed
Lead sponsor
Yale University
Other
Eligibility
8 Years to 60 Years
Enrollment
4,299 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
29
States / cities
Tucson, Arizona • Orange, California • San Diego, California + 24 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2023 · Synced Oct 26, 2026, 2:10 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Micra AV Tracking During Exercise Testing

NCT05966168
View directory record Official record
Conditions
Heart Block AV
Interventions
Medtronic Micra AV Device
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 17, 2024 · Synced Oct 26, 2026, 2:10 AM EDT
Completed Not applicable Interventional

VIVO™ Accuracy Study

NCT03340142
View directory record Official record
Conditions
Premature Ventricular Contraction, Ventricular Tachycardia
Interventions
VIVO™
Device
Lead sponsor
Catheter Precision. Inc.
Industry
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
3
States / cities
Iowa City, Iowa • Baltimore, Maryland • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 15, 2018 · Synced Oct 26, 2026, 2:10 AM EDT
Terminated No phase listed Observational

The PSVT Place Registry.Paroxysmal Supraventricular Tachycardia (PSVT) Registry.

NCT03353610
View directory record Official record
Conditions
Paroxysmal Supraventricular Tachycardia (PSVT)
Interventions
Not listed
Lead sponsor
Milestone Pharmaceuticals Inc.
Other
Eligibility
Not listed
Enrollment
354 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Dec 3, 2020 · Synced Oct 26, 2026, 2:10 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 26, 2026, 2:10 AM EDT
Recruiting Not applicable Interventional

Parasternal Extravascular ICD System Pivotal Clinical Investigation (ALARION EV) Study

NCT07324031
View directory record Official record
Conditions
Ventricular Arrythmia, Ventricular Fibrillation, Ventricular Tachycardia
Interventions
Atala™ lead and EV-ICD Pulse Generator
Device
Lead sponsor
AtaCor Medical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
27
States / cities
Scottsdale, Arizona • Jonesboro, Arkansas • La Jolla, California + 23 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 26, 2026, 2:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Heart Rhythm Twins Study

NCT05866731
View directory record Official record
Conditions
Premature Atrial Complex, Premature Ventricular Contraction
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Oct 26, 2026, 2:10 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 26, 2026, 2:10 AM EDT
Not listed Phase 4 Interventional

Prospective Assessment of Premature Ventricular Contractions Suppression in Cardiomyopathy(PAPS)

NCT03228823
View directory record Official record
Conditions
Ventricular Premature Beats, Contractions, or Systoles, Cardiomyopathies
Interventions
Radiofrequency ablation, Amiodarone (Antiarrhythmic drug)
Procedure · Drug
Lead sponsor
Hunter Holmes Mcguire Veteran Affairs Medical Center
Federal
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
10
States / cities
Los Angeles, California • San Francisco, California • Tampa, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2021 · Synced Oct 26, 2026, 2:10 AM EDT
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 26, 2026, 2:10 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 26, 2026, 2:10 AM EDT