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Showing 1–24 of 38 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Tachyarrhythmias Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluating the Electro Magnetic Interference of Using Tablet and Smart Phone on Leadless Pacemaker (MICRA)

NCT02758210
View directory record Official record
Conditions
Bradycardia, Atrial Tachyarrhythmia
Interventions
Use of a Tablet, Use of a Smart Phone
Device
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 8, 2017 · Synced Jul 21, 2026, 3:29 PM EDT
Completed No phase listed Observational

Circulating Biomarkers and Ventricular Tachyarrhythmia

NCT01892462
View directory record Official record
Conditions
Cardiomyopathy, Ventricular Tachycardia, Ventricular Fibrillation
Interventions
Not listed
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Jul 21, 2026, 3:29 PM EDT
Enrolling by invitation No phase listed Observational

Lead Evaluation for Defibrillation and Reliability Post Approval Study

NCT07005232
View directory record Official record
Conditions
Tachyarrhythmia
Interventions
defibrillation lead
Device
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2032
U.S. locations
46
States / cities
Birmingham, Alabama • Torrance, California • Aurora, Colorado + 39 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Jul 21, 2026, 3:29 PM EDT
Not listed Phase 1Phase 2 Interventional

The REACT-ICD Trial

NCT02439424
View directory record Official record
Conditions
Atrial Tachyarrhythmia, Atrial Fibrillation
Interventions
Reactive ATP
Device
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 22, 2016 · Synced Jul 21, 2026, 3:29 PM EDT
Completed No phase listed Observational

RATE Registry - Registry of Atrial Tachyarrhythmia/Atrial Fibrillation (AT/AF) Episodes in the Cardiac Rhythm Management (CRM) Device Population

NCT00837798
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
CRM Device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
5,379 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Jul 21, 2026, 3:29 PM EDT
Not listed Not applicable Interventional

Transcutaneous Vagal Nerve Stimulation to Prevent Tachyarrhythmias in Patients Early Following Myocardial Infarction

NCT05750108
View directory record Official record
Conditions
Myocardial Infarction, Tachyarrhythmia
Interventions
Parasym device (active, current (mA) < discomfort threshold), Parasym device (sham, current (mA) = 0)
Device
Lead sponsor
Hippocration General Hospital
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 28, 2023 · Synced Jul 21, 2026, 3:29 PM EDT
Not listed Not applicable Interventional

Substrate Versus Trigger Ablation for Paroxysmal Atrial Fibrillation

NCT02169037
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
FIRM Ablation, Conventional AF ablation with PVI
Procedure
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
2
States / cities
Palo Alto, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated Jun 3, 2021 · Synced Jul 21, 2026, 3:29 PM EDT
Completed Phase 4 Interventional Results available

The Use of Dual Chamber ICD With Special Programmed Features to Lower the Risk of Inappropriate Shock

NCT00787800
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Atrial Fibrillation, Supraventricular Tachycardia
Interventions
Dual Chamber ICD, Single Chamber ICD
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
2
States / cities
Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 23, 2014 · Synced Jul 21, 2026, 3:29 PM EDT
Completed Not applicable Interventional

Evaluation of Conventional Ablation With or Without Focal Impulse and Rotor Modulation to Eliminate Human AF

NCT02456233
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Conventional AF Ablation with PVI, FIRM-guided ablation plus PVI
Procedure
Lead sponsor
Stanford University
Other
Eligibility
22 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2025
U.S. locations
2
States / cities
San Diego, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 3, 2025 · Synced Jul 21, 2026, 3:29 PM EDT
Active, not recruiting Not applicable Interventional

Non-Invasive Median Nerve Stimulation to Attenuate Atrial Tachyarrhythmias After Catheter Ablation for Atrial Fibrillation

NCT06748157
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
CardiaCare RR2, Sham Device
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Jul 21, 2026, 3:29 PM 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 5, 2017 · Synced Jul 21, 2026, 3:29 PM EDT
Completed No phase listed Observational Results available

SJ4 Post Approval Study in Implantable Cardioverter-Defibrillator and Cardiac Resynchronization Therapy Defibrillator Patients

NCT00940888
View directory record Official record
Conditions
Tachyarrhythmias, Sudden Cardiac Death, Heart Failure
Interventions
SJ4 connector and RV high voltage SJ4 lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,701 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Jul 21, 2026, 3:29 PM EDT
Not listed Phase 3 Interventional

Cardiac Sympathetic Denervation for Prevention of Ventricular Tachyarrhythmias

NCT01013714
View directory record Official record
Conditions
Sudden Cardiac Death, Ventricular Tachycardia, Ventricular Fibrillation, Cardiomyopathy
Interventions
Cardiac Sympathetic Denervation (CSD), Routine Care
Procedure · Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
3
States / cities
Los Angeles, California • Portland, Oregon • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 18, 2024 · Synced Jul 21, 2026, 3:29 PM EDT
Completed Not applicable Interventional

Lead EvaluAtion for Defibrillation and Reliability (LEADR) / Lead Evaluation for Defibrillation and Reliability in Left Bundle Branch Area Pacing (LEADR LBBAP)

NCT04863664
View directory record Official record
Conditions
Tachyarrhythmia
Interventions
Defibrillation (RV Implant), Defibrillation (LBBAP Implant)
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
12 Years and older
Enrollment
998 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
23
States / cities
Huntsville, Alabama • Torrance, California • Hartford, Connecticut + 19 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Jul 21, 2026, 3:29 PM EDT
Not listed Phase 2 Interventional

Botulinum Toxin Injection for Preventing Secondary Atrial Fibrillation in Patient With Supra-ventricular Tachyarrythmias

NCT02008461
View directory record Official record
Conditions
Supra-ventricular Tachyarrhythmias
Interventions
radiofrequency ablation, botulinum toxin injection
Procedure · Drug
Lead sponsor
Meshalkin Research Institute of Pathology of Circulation
Network
Eligibility
18 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Sep 22, 2015 · Synced Jul 21, 2026, 3:29 PM EDT
Completed Phase 3 Interventional Results available

THERMOCOOL® SMARTTOUCH™ Catheter for the Treatment of Symptomatic Paroxysmal Atrial Fibrillation CONTINUED ACCESS

NCT01639495
View directory record Official record
Conditions
Drug Refractory Symptomatic Paroxysmal Atrial Fibrillation
Interventions
THERMOCOOL® SMARTTOUCH™ Catheter
Device
Lead sponsor
Biosense Webster, Inc.
Industry
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
20
States / cities
Birmingham, Alabama • Stanford, California • Orlando, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Jul 21, 2026, 3:29 PM EDT
Completed Not applicable Interventional Results available

REnal SympathetiC Denervation to sUpprEss Tachyarrhythmias in ICD Recipients

NCT01747837
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Boston Scientific Vessix Renal Denervation System
Device
Lead sponsor
Vivek Reddy
Other
Eligibility
18 Years to 85 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
2
States / cities
New York, New York • Austin, Texas
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Jul 21, 2026, 3:29 PM EDT
Completed Not applicable Interventional Results available

REASSURE AV Registry

NCT01074034
View directory record Official record
Conditions
Sudden Cardiac Death, Bradycardia
Interventions
AV Therapy Assessment-B301 investigational device
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
211 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
36
States / cities
Anchorage, Alaska • Larkspur, California • Orlando, Florida + 32 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2017 · Synced Jul 21, 2026, 3:29 PM EDT
Completed No phase listed Observational Results available

The Dynamics of Human Atrial Fibrillation

NCT01008722
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Tachyarrhythmia
Interventions
Not listed
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 80 Years
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
2
States / cities
La Jolla, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 7, 2017 · Synced Jul 21, 2026, 3:29 PM EDT
Terminated No phase listed Observational Results available

Optisure Lead Post Approval Study

NCT02235545
View directory record Official record
Conditions
Heart Failure, Tachycardia, Ventricular
Interventions
St. Jude Medical Optisure Lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,735 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
46
States / cities
Birmingham, Alabama • Phoenix, Arizona • Jonesboro, Arkansas + 42 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Jul 21, 2026, 3:29 PM EDT
Completed No phase listed Observational

Mechanical Alternans Study

NCT01557465
View directory record Official record
Conditions
Ischemic Cardiomyopathy, Nonischemic Cardiomyopathy, Heart Failure
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 7, 2015 · Synced Jul 21, 2026, 3:29 PM EDT
Completed No phase listed Observational

Stanford Cardiac Invasive Electrophysiology Novel Computer Experience

NCT03549806
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Tachycardia, Atrial Flutter, Arrhythmias, Cardiac
Interventions
No Intervention. Test is computer algorithm.
Diagnostic Test
Lead sponsor
Stanford University
Other
Eligibility
21 Years to 80 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 1, 2024 · Synced Jul 21, 2026, 3:29 PM EDT
Completed No phase listed Observational

Ablation of Ventricular Fibrillation by Accurate Targeting of Arrhythmogenic Regions (AVATAR)

NCT01492764
View directory record Official record
Conditions
Ventricular Tachyarrhythmias
Interventions
Not listed
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 90 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
2
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Nov 17, 2019 · Synced Jul 21, 2026, 3:29 PM EDT
Completed Not applicable Interventional Results available

Reducing Episodes by Septal Pacing Efficacy Confirmation Trial (RESPECT)

NCT00289289
View directory record Official record
Conditions
Atrial Fibrillation, Tachycardia, Supraventricular, Arrhythmia, Bradycardia
Interventions
Intervention Pacing Features
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
34
States / cities
Little Rock, Arkansas • Rancho Mirage, California • San Diego, California + 31 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2012 · Synced Jul 21, 2026, 3:29 PM EDT