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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Cardiac pacing Clear all
Completed Not applicable Interventional Results available

Conduction System Pacing Optimized Therapy

NCT04905290
View directory record Official record
Conditions
Heart Failure
Interventions
Left ventricular coronary sinus (BiV) configuration, Conduction system pacing-only configuration, Conduction System Pacing Optimized Therapy (CSPOT) configuration
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
7
States / cities
Tampa, Florida • Chicago, Illinois • Houma, Louisiana + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2025 · Synced Sep 17, 2026, 3:44 AM EDT
Completed Not applicable Interventional

Ideal Pacer Pad Position Study

NCT03898050
View directory record Official record
Conditions
Symptomatic Bradycardia
Interventions
transcutaneous cardiac pacing
Procedure
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 4, 2022 · Synced Sep 17, 2026, 3:44 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 24, 2007 · Synced Sep 17, 2026, 3:44 AM EDT
Terminated Phase 4 Interventional Results available

Combined Use of BIOTRONIK Home Monitoring and Predefined Anticoagulation to Reduce Stroke Risk

NCT00559988
View directory record Official record
Conditions
Atrial Fibrillation, Atrial Flutter, Stroke, Embolism, Systemic Arterial, Major Bleeding
Interventions
Home Monitoring Guided OAC, Physician-Directed OAC
Drug
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
2,718 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
73
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Anaheim, California + 70 more
Source: ClinicalTrials.gov public record
Updated Dec 4, 2017 · Synced Sep 17, 2026, 3:44 AM EDT
Terminated Not applicable Interventional

Use of 3-D Blood Pool Scintigraphy to Guide Left Ventricular Pacing Lead Placement in Patients Requiring Cardiac Resynchronization Therapy

NCT02669290
View directory record Official record
Conditions
Heart Failure, Left Ventricular Dysfunction, Cardiac Resynchronization Therapy
Interventions
Guided, Non-guided
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 12, 2020 · Synced Sep 17, 2026, 3:44 AM EDT
Completed Not applicable Interventional Results available

Evaluation of ACUITY™ X4 Quadripolar Coronary Venous Leads and RELIANCE™ 4-FRONT Defibrillation Leads

NCT02071173
View directory record Official record
Conditions
Cardiac Resynchronization Therapy
Interventions
ACUITY X4 quadripolar coronary venous lead and RELIANCE 4-FRONT defibrillation lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,244 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
96
States / cities
Birmingham, Alabama • Huntsville, Alabama • Anchorage, Alaska + 85 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2021 · Synced Sep 17, 2026, 3:44 AM EDT
Recruiting No phase listed Observational

ATrial Tachycardia PAcing Therapy in Congenital Heart

NCT03209583
View directory record Official record
Conditions
Atrial Arrhythmia, Atrial Tachycardia, Congenital Heart Disease, Pacemaker Re-Entrant Tachycardia
Interventions
Medtronic
Device
Lead sponsor
Ian Law
Other
Eligibility
Not listed
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
14
States / cities
Los Angeles, California • Orange, California • Hollywood, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 17, 2026, 3:44 AM EDT
Completed No phase listed Observational Results available

QuickFlex Micro Left Ventricular Lead Post Approval Study

NCT01179477
View directory record Official record
Conditions
Heart Failure
Interventions
Implantation of a QuickFlex® μ Model 1258T LV Lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,930 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
77
States / cities
Birmingham, Alabama • Huntsville, Alabama • Anchorage, Alaska + 67 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2019 · Synced Sep 17, 2026, 3:44 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 6, 2024 · Synced Sep 17, 2026, 3:44 AM EDT
Terminated Not applicable Interventional Results available

Cardiovascular and Neurohormonal Effects of Faster Atrial Pacing Rate

NCT00698139
View directory record Official record
Conditions
Heart Failure
Interventions
Medtronic Pacemaker
Device
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 90 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 26, 2018 · Synced Sep 17, 2026, 3:44 AM EDT
Completed No phase listed Observational Results available

Extracellular Matrix Marker of Arrhythmia Risk (EMMA)

NCT00376532
View directory record Official record
Conditions
Myocardiopathies, Ischemia, Myocardial, Arrythmia, Death, Sudden, Cardiac
Interventions
Not listed
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 3, 2014 · Synced Sep 17, 2026, 3:44 AM 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 Sep 17, 2026, 3:44 AM 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 Sep 17, 2026, 3:44 AM EDT
Terminated Not applicable Interventional Results available

Biventricular Pacing After Cardiopulmonary Bypass

NCT00498940
View directory record Official record
Conditions
Heart Failure
Interventions
Optimization Testing, Temporary Biventricular Pacing
Device
Lead sponsor
Henry M. Spotnitz
Other
Eligibility
18 Years and older
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 21, 2018 · Synced Sep 17, 2026, 3:44 AM EDT
Completed Not applicable Interventional Results available

HIS-Purkinje Conduction System Pacing Optimized Trial of Cardiac Resynchronization Therapy

NCT04561778
View directory record Official record
Conditions
Heart Failure，Congestive, Cardiomyopathies, Left Ventricular Dysfunction
Interventions
HOT-CRT, Biventricular Pacing
Device
Lead sponsor
Pugazhendhi Vijayaraman
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Danville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 6, 2024 · Synced Sep 17, 2026, 3:44 AM EDT
Completed Not applicable Interventional Results available

His Bundle Pacing Versus Coronary Sinus Pacing for Cardiac Resynchronization Therapy

NCT02700425
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
CRT Pacemaker
Device
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
8
States / cities
Los Angeles, California • Chicago, Illinois • Naperville, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2021 · Synced Sep 17, 2026, 3:44 AM EDT
Completed Not applicable Interventional Results available

RF Surgical Sponge-Detecting System on the Function of Pacemakers and Implantable Cardioverter Defibrillators

NCT02111980
View directory record Official record
Conditions
Cardiomyopathy, Cardiac Arrhythmia, Heart Failure, Chronic Thromboembolic Pulmonary Hypertension
Interventions
RF Assure Scanning
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Dec 23, 2019 · Synced Sep 17, 2026, 3:44 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 16, 2024 · Synced Sep 17, 2026, 3:44 AM EDT
Completed Phase 2Phase 3 Interventional

Comparison of Medical Therapy, Pacing and Defibrillation in Heart Failure

NCT00180258
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Cardiac Resynchronization Therapy with & without defibrillator
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2002
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 24, 2007 · Synced Sep 17, 2026, 3:44 AM EDT
Completed No phase listed Observational

Predicting Response to Cardiac Resynchronization Therapy in Heart Failure

NCT00359372
View directory record Official record
Conditions
Heart Failure, Left Ventricular Dysfunction
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
3
States / cities
Baltimore, Maryland • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 17, 2026, 3:44 AM EDT
Completed Phase 4 Interventional

Evaluation of the SafeR Mode in Patients With a Dual Chamber Pacemaker Indication

NCT00562107
View directory record Official record
Conditions
Assess the Benefits From the AAISafeR/SafeR Algorithm of Symphony 2550 or REPLYTM DR in a Wide Range of Pacemaker Patients.
Interventions
Symphony DR 2550 and REPLY DR cardiac pacemakers
Device
Lead sponsor
LivaNova
Industry
Eligibility
Not listed
Enrollment
650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Brighton, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 28, 2014 · Synced Sep 17, 2026, 3:44 AM EDT
Terminated Not applicable Interventional Results available

Restoration of Chronotropic Competence in Heart Failure Patients With Normal Ejection Fraction

NCT00670111
View directory record Official record
Conditions
Heart Failure
Interventions
Insignia Plus / Ultra (Guidant/Boston Scientific)
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
5
States / cities
Jonesboro, Arkansas • Louisville, Kentucky • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated May 18, 2017 · Synced Sep 17, 2026, 3:44 AM EDT
Completed Phase 2Phase 3 Interventional

EASYTRAK 4 Steerable LV Lead

NCT00158964
View directory record Official record
Conditions
Heart Failure
Interventions
EASYTRAK 4 STEERABLE LV lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 24, 2007 · Synced Sep 17, 2026, 3:44 AM EDT
Withdrawn Early Phase 1 Interventional

Placement of CS/LV Pacing Leads With EnSite NavX Guidance

NCT00577187
View directory record Official record
Conditions
Heart Failure
Interventions
EnSite NavX-Guided CRT implant
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Sep 17, 2026, 3:44 AM EDT