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Showing 1–24 of 37 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Cardiac Resynchronization Therapy Pacemaker Clear all
Completed No phase listed Observational Accepts healthy volunteers

Prospective Observation of Exercise Parameters in Advanced Heart Failure

NCT01210573
View directory record Official record
Conditions
Advanced Heart Failure
Interventions
adjustment of LVAD or pacemaker
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 17, 2014 · Synced Sep 16, 2026, 4:29 AM EDT
Not listed Phase 4 Interventional

Effect of Ranolazine on Valvular Disease in Patients With Pacemakers

NCT01979965
View directory record Official record
Conditions
Ischemic Mitral Regurgitation
Interventions
Ranolazine (Active drug), Placebo
Drug
Lead sponsor
University Cardiology
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 7, 2013 · Synced Sep 16, 2026, 4:29 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 16, 2026, 4:29 AM EDT
Terminated Phase 4 Interventional

HEAL-HF: A Cardiac Resynchronization Therapy (CRT) Outcomes Study

NCT00370526
View directory record Official record
Conditions
Heart Failure, Congestive
Interventions
Acute hemodynamic assessment using PV Loops (CD Leycom, The Netherlands) during LV lead placement
Procedure
Lead sponsor
Stereotaxis
Industry
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
3
States / cities
Gainesville, Georgia • Charleston, South Carolina • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 10, 2008 · Synced Sep 16, 2026, 4:29 AM EDT
Completed No phase listed Observational

iBeat Wristwatch Validation Study

NCT03711695
View directory record Official record
Conditions
Arrythmia, Cardiac
Interventions
iBeat wristwatch device
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 85 Years
Enrollment
55 participants
Timeline
2018
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 4, 2019 · Synced Sep 16, 2026, 4:29 AM EDT
Completed Not applicable Interventional Results available

Remote Device Interrogation In The Emergency Department

NCT01871090
View directory record Official record
Conditions
Heart Disease, Cardiovascular Disease, Heart Failure, Arrhythmias, Cardiac
Interventions
Unpaired remote monitoring transmitter
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Zanesville, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 14, 2019 · Synced Sep 16, 2026, 4:29 AM EDT
Completed Not applicable Interventional Results available

ECG Belt to Assess Electrical Synchronization

NCT04583709
View directory record Official record
Conditions
Bradycardia, Heart Failure
Interventions
ECG Belt
Device
Lead sponsor
Pugazhendhi Vijayaraman
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Wilkes-Barre, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 21, 2022 · Synced Sep 16, 2026, 4:29 AM EDT
Completed Not applicable Interventional Results available

Metabolic Mapping and Cardiac Resynchronization

NCT03420833
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac resynchronization therapy pacemaker (CRT-P)
Device
Lead sponsor
Yong-Mei Cha
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 22, 2025 · Synced Sep 16, 2026, 4:29 AM EDT
Withdrawn Phase 4 Interventional

Remote Interrogation in Rural Emergency Departments

NCT02421549
View directory record Official record
Conditions
Heart Disease, Cardiovascular Disease, Heart Failure, Arrhythmias, Cardiac
Interventions
Unpaired remote monitoring transmitter
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Sep 16, 2026, 4:29 AM EDT
Completed Not applicable Interventional Results available

SJM MRI Diagnostic Imaging Registry (IDE)

NCT02807948
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
Pacemaker, ICD, or CRT device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
189 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
58
States / cities
Scottsdale, Arizona • Tucson, Arizona • Jonesboro, Arkansas + 55 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced Sep 16, 2026, 4:29 AM EDT
Withdrawn Not applicable Interventional

Impact of Cardiac Resynchronization Therapy on Right Ventricular Function in Left Ventricular Assist Device Patients

NCT02169076
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy
Device
Lead sponsor
University of Louisville
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Jan 4, 2017 · Synced Sep 16, 2026, 4:29 AM EDT
Terminated Not applicable Interventional

Vascular Endothelial Function and Cardiac Resynchronization Response in Patients With Heart Failure

NCT02783716
View directory record Official record
Conditions
Heart Failure
Interventions
Subcutaneous adipose tissue collection, Peripheral arterial tonometry (PAT)
Procedure · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 17, 2023 · Synced Sep 16, 2026, 4:29 AM EDT
Terminated Not applicable Interventional

Effect of Cardiac Resynchronization Therapy (CRT) on Left Ventricular Assist Device (LVAD) Function

NCT04153786
View directory record Official record
Conditions
LVAD (Left Ventricular Assist Device) Driveline Infection
Interventions
Temporary changes in an already-implanted medical device (biventricular pacemaker)
Other
Lead sponsor
University of California, Davis
Other
Eligibility
Not listed
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Nov 6, 2024 · Synced Sep 16, 2026, 4:29 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 16, 2026, 4:29 AM EDT
Terminated No phase listed Observational Results available

Arrythmia Burden in Cardiac Contractility Modulation (CCM)

NCT05704426
View directory record Official record
Conditions
Atrial Fibrillation, Arrythmia
Interventions
Impulse Dynamics Optimizer Device
Device
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 18, 2024 · Synced Sep 16, 2026, 4:29 AM EDT
Active, not recruiting No phase listed Observational

Factors Associated With Response to Cardiac Resynchronization Therapy in Heart Failure Patients With Non-LBBB ECG Pattern

NCT06977217
View directory record Official record
Conditions
Cardiomyopathies, Heart Failure, Non-left Bundle Branch Block, Cardiac Resynchronization Therapy
Interventions
CRT-D implantation
Procedure
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 16, 2026, 4:29 AM EDT
Recruiting No phase listed Observational

His Bundle Pacing in Bradycardia and Heart Failure

NCT03008291
View directory record Official record
Conditions
Bradycardia, Heart Failure
Interventions
CRT-D Implantation, CRT-P Implantation, Dual Chamber Pacemaker Implantation
Procedure
Lead sponsor
Yong-Mei Cha
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 23, 2025 · Synced Sep 16, 2026, 4:29 AM EDT
Terminated Not applicable Interventional Results available

Comparison of Cyanoacrylate Tissue Adhesive and Suture for Closure of Cardiac Device Pockets

NCT00674128
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Cyanoacrylate tissue adhesive (Dermabond), Polyglactin 910 suture (Vicryl)
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years and older
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Dec 28, 2010 · Synced Sep 16, 2026, 4:29 AM EDT
Completed No phase listed Observational

Identification of the Pericardiophrenic Vein During Cardiac Device Implant Procedures to Prevent Extracardiac Stimulation

NCT01008670
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Respicardia, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
6
States / cities
Birmingham, Alabama • Baltimore, Maryland • Cincinnati, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 23, 2010 · Synced Sep 16, 2026, 4:29 AM EDT
Not listed No phase listed Observational

The Registry Evaluating Functional Outcomes of Resynchronization Management

NCT00959179
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Not listed
Lead sponsor
Saint Luke's Health System
Other
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
2
States / cities
Elgin, Illinois • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 13, 2009 · Synced Sep 16, 2026, 4:29 AM EDT
Completed Not applicable Interventional Results available

Cardiac Resynchronization in the Elderly

NCT03031847
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy Pacemaker, Cardiac Resynchronization Therapy Defibrillator
Device
Lead sponsor
Samir Saba
Other
Eligibility
75 Years and older
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
6
States / cities
Durham, North Carolina • Columbus, Ohio • Erie, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 6, 2023 · Synced Sep 16, 2026, 4:29 AM EDT
Terminated Not applicable Interventional Results available

MIRACLE EF Clinical Study

NCT01735916
View directory record Official record
Conditions
Congestive Heart Failure, Left Bundle Branch Block, Systolic Heart Failure
Interventions
CRT-P Implant, CRT-P OFF
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
69
States / cities
Concord, California • La Jolla, California • Los Angeles, California + 62 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2017 · Synced Sep 16, 2026, 4:29 AM EDT
Completed No phase listed Observational

Resynchronization Therapy in Young Patients With and Without CHD

NCT00208806
View directory record Official record
Conditions
Dilated Cardiomyopathy, Pediatric
Interventions
congestive heart failure patients
Other
Lead sponsor
Emory University
Other
Eligibility
1 Day to 18 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 9, 2013 · Synced Sep 16, 2026, 4:29 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 16, 2026, 4:29 AM EDT