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

ENABLE MRI (Magnetic Resonance Imaging)

NCT02652481
View directory record Official record
Conditions
Magnetic Resonance Imaging
Interventions
ImageReady MR Conditional Defibrillation System
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
34
States / cities
Huntsville, Alabama • Jonesboro, Arkansas • Pasadena, California + 31 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2021 · Synced Sep 16, 2026, 10:20 PM EDT
Completed No phase listed Observational Results available

Multicenter Automatic Defibrillator Implantation Trial With Cardiac Resynchronization Therapy Post Approval Registry

NCT01294449
View directory record Official record
Conditions
Heart Failure
Interventions
MADIT-CRT ICD, MADIT-CRT CRT-D
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
21 Years and older
Enrollment
394 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 3, 2014 · Synced Sep 16, 2026, 10:20 PM EDT
Terminated Not applicable Interventional Results available

BOOST - Benefit of Frequent Optimization After Cardiac Resynchronization Therapy Device Replacement

NCT00929474
View directory record Official record
Conditions
Heart Failure
Interventions
QuickOpt - SJM CRT (Group 1), Control - SJM CRT (Group 2)
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
2
States / cities
Aurora, Colorado • Hattiesburg, Mississippi
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Sep 16, 2026, 10:20 PM EDT
Terminated Not applicable Interventional Results available

Right Ventricular Septal Pacing in Patients With Right Bundle Branch Block and Heart Failure (The SPARK Trial)

NCT02441101
View directory record Official record
Conditions
Right Bundle-Branch Block, Heart Failure
Interventions
RV DDD(R)-60 with AV optimization, RV DDD(R)-60
Device
Lead sponsor
Barry London
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 17, 2024 · Synced Sep 16, 2026, 10:20 PM EDT
Completed No phase listed Observational

InSync Implantable Cardioverter Defibrillator Registry: Cardiac Resynchronization Therapy

NCT00289302
View directory record Official record
Conditions
Heart Failure, Cardiomyopathy
Interventions
Cardiac resynchronization therapy device
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
51
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 48 more
Source: ClinicalTrials.gov public record
Updated Oct 4, 2007 · Synced Sep 16, 2026, 10:20 PM EDT
Completed Not applicable Interventional

ECG Belt vs. Echocardiographic Optimization of CRT

NCT03305692
View directory record Official record
Conditions
Heart Failure, Systolic
Interventions
Optimization of CRT Device
Diagnostic Test
Lead sponsor
Alan J. Bank, MD
Other
Eligibility
18 Years to 110 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 26, 2021 · Synced Sep 16, 2026, 10:20 PM EDT
Completed Not applicable Interventional Results available

Attain Model 4196 Left Ventricular (LV) Lead

NCT00271544
View directory record Official record
Conditions
Heart Failure
Interventions
Pacing Lead
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
19
States / cities
Anchorage, Alaska • Phoenix, Arizona • Long Beach, California + 16 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2009 · Synced Sep 16, 2026, 10:20 PM 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, 10:20 PM EDT
Completed No phase listed Observational Results available

MultiPoint Pacing™ Post Market Study

NCT02832622
View directory record Official record
Conditions
Heart Failure
Interventions
MPP, BiV/MPP
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
2,169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
110
States / cities
Birmingham, Alabama • Huntsville, Alabama • Avondale, Arizona + 99 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2021 · Synced Sep 16, 2026, 10:20 PM EDT
Completed Not applicable Interventional

Improvement in Clinical Outcomes in Heart Failure Patients With ICDs That Practice Meditation

NCT00611260
View directory record Official record
Conditions
Congestive Heart Failure, Cardiac Resynchronization Therapy
Interventions
Vipassana Meditation practice and instruction, Standard Medical Care
Behavioral · Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 85 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 16, 2026, 10:20 PM EDT
Completed Not applicable Interventional Results available

Model 4396 Left Ventricular (LV) Lead Study

NCT00853593
View directory record Official record
Conditions
Heart Failure
Interventions
Pacing Lead
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
19
States / cities
Pasadena, California • Sacramento, California • Atlantis, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2019 · Synced Sep 16, 2026, 10:20 PM EDT
Completed Not applicable Interventional

Does Echocardiographically Guided Ventriculo-Ventricular Optimization Yield a Sustained Improvement in Echocardiographic Parameters in Cardiac Resynchronization Therapy Patients? (DEVISE CRT)

NCT00737490
View directory record Official record
Conditions
Cardiomyopathy, Heart Failure
Interventions
"Sequential Arm" (Promote , model # 2207-36 or Atlas HF , model # V-343), "Simultaneous Arm" (Promote , model # 2207-36 or Atlas HF , model # V-343)
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 31, 2014 · Synced Sep 16, 2026, 10:20 PM EDT
Terminated Not applicable Interventional Results available

Biventricular Versus Right Ventricular Pacing

NCT06298669
View directory record Official record
Conditions
Heart Failure
Interventions
Biventricular Pacing, Right Ventricular Pacing
Device
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Sep 16, 2026, 10:20 PM EDT
Completed No phase listed Observational

Evaluation of Multisensor Data in Heart Failure Patients With Implanted Devices

NCT01128166
View directory record Official record
Conditions
Heart Failure
Interventions
COGNIS CRT-D
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
975 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
81
States / cities
Anchorage, Alaska • Gilbert, Arizona • Little Rock, Arizona + 69 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2015 · Synced Sep 16, 2026, 10:20 PM EDT
Completed Not applicable Interventional

Comparison of Epicardial Versus Conventional Lead Placement in Cardiac Resynchronization Therapy

NCT01302470
View directory record Official record
Conditions
Cardiac Resynchronization Therapy, Heart Failure
Interventions
Primary epicardial placement of left ventricular lead, Transvenous placement of left ventricular lead
Procedure
Lead sponsor
St. Luke's-Roosevelt Hospital Center
Other
Eligibility
18 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 18, 2015 · Synced Sep 16, 2026, 10:20 PM EDT
Completed No phase listed Observational

Ensure Cardiac Resynchronization Therapy Study

NCT00291564
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy Device
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
430 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
32
States / cities
Birmingham, Alabama • Newport Beach, California • Trumbull, Connecticut + 29 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2007 · Synced Sep 16, 2026, 10:20 PM 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, 10:20 PM EDT
Completed No phase listed Observational

CRT Pilot Study for Children With Heart Failure

NCT00585065
View directory record Official record
Conditions
Chronic Pediatric Heart Failure
Interventions
CRT device implant
Device
Lead sponsor
University of Utah
Other
Eligibility
1 Year to 18 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 10, 2023 · Synced Sep 16, 2026, 10:20 PM EDT
Terminated Phase 3 Interventional Results available

AV Node Ablation and Pacemaker Therapy Compared to Drug Therapy for Atrial Fibrillation - Pilot Study

NCT00589303
View directory record Official record
Conditions
Atrial Fibrillation, Heart Failure
Interventions
FDA approved rate and rhythm control drugs, AV Node ablation and device implant
Drug · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
65 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
5
States / cities
Scottsdale, Arizona • Evansville, Indiana • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2013 · Synced Sep 16, 2026, 10:20 PM EDT
Terminated Early Phase 1 Interventional

A Pilot Study Comparing the Programmed Delay Between the Atrial and Ventricle Interval

NCT00794183
View directory record Official record
Conditions
Heart Failure
Interventions
CRT device settings
Device
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 25, 2012 · Synced Sep 16, 2026, 10:20 PM EDT
Completed Not applicable Interventional Results available

Cardiac Resynchronization Therapy Efficacy Enhancements

NCT02222818
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Conducted AF Response (CAFR), Conducted AF Response Plus (CAFRPlus)
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
10
States / cities
Boca Raton, Florida • West Des Moines, Iowa • Minneapolis, Minnesota + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 5, 2017 · Synced Sep 16, 2026, 10:20 PM EDT
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, 10:20 PM 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, 10:20 PM EDT
Terminated Not applicable Interventional Results available

ECG for Programming in CRT

NCT03936608
View directory record Official record
Conditions
Systolic Heart Failure, Cardiac Resynchronization Therapy, Electrocardiography
Interventions
Programming individualized RV-LV pacing offset to optimize ECG, Nominally programming CRT device without RV-LV offset
Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 100 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 2, 2020 · Synced Sep 16, 2026, 10:20 PM EDT