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ClinicalTrials.gov public records Last synced Sep 11, 2026, 10:30 PM EDT

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Showing 1–24 of 171 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Cardiac resynchronization therapy Clear all
Completed No phase listed Observational

Conduction System Pacing International Registry (CONSPIRE)

NCT04831125
View directory record Official record
Conditions
Bradyarrhythmia, Heart Failure
Interventions
Data collection
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
383 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
5
States / cities
Tucson, Arizona • Chicago, Illinois • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Sep 11, 2026, 10:30 PM 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 11, 2026, 10:30 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 11, 2026, 10:30 PM 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 11, 2026, 10:30 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 11, 2026, 10:30 PM EDT
Withdrawn Not applicable Interventional

Acute Optimization of Cardiac Resynchronization Therapy (CRT)Using Echocardiography and SonR

NCT01293526
View directory record Official record
Conditions
Heart Failure
Interventions
Control, Experimental, Experimental 2
Device
Lead sponsor
Piedmont Healthcare
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 17, 2024 · Synced Sep 11, 2026, 10:30 PM EDT
Completed Not applicable Interventional Results available

Multicenter Automatic Defibrillator Implantation Trial - Chemotherapy-Induced Cardiomyopathy

NCT02164721
View directory record Official record
Conditions
Cardiomyopathy
Interventions
Three-lead CRT-D (Defibrillator)
Device
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
9
States / cities
Los Angeles, California • Washington D.C., District of Columbia • Tampa, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Sep 11, 2026, 10:30 PM 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 11, 2026, 10:30 PM 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 11, 2026, 10:30 PM EDT
Completed Not applicable Interventional

Optimal Coronary Sinus Lead Implantation Using Intracardiac Impedography and Magnetic Resonance Imaging

NCT01129635
View directory record Official record
Conditions
Heart Failure, Systolic, Left Bundle Branch Block
Interventions
Cardiac Resynchronization Therapy (CRT) implantation
Procedure
Lead sponsor
Emory University
Other
Eligibility
Not listed
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 20, 2015 · Synced Sep 11, 2026, 10:30 PM EDT
Completed No phase listed Observational

LONGEVITY Study. Evaluation of the Device and Battery Longevity of Boston Scientific Market-released ICD and CRT-D Devices

NCT02091011
View directory record Official record
Conditions
Implantable Cardioverter Defibrillators, CRT-D Cardiac Resynchronization Therapy Defibrillator
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
Not listed
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
51
States / cities
Birmingham, Alabama • Glendale, Arizona • Tucson, Arizona + 44 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2022 · Synced Sep 11, 2026, 10:30 PM EDT
Completed No phase listed Observational Results available

InSync Model 8040 (InSync) and InSync III Model 8042 (InSync III) Registry

NCT00273182
View directory record Official record
Conditions
Heart Failure, Cardiomyopathy
Interventions
InSync Model 8040, InSync III Model 8042
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
1,999 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2011
U.S. locations
82
States / cities
Birmingham, Alabama • Peoria, Arizona • Fort Smith, Arkansas + 79 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2013 · Synced Sep 11, 2026, 10:30 PM EDT
Completed Not applicable Interventional Results available

Detect Fluid Early From Intra-thoracic Impedance Monitoring

NCT00916929
View directory record Official record
Conditions
Heart Failure
Interventions
Impedance Monitoring Feature
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
34
States / cities
Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 29 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2019 · Synced Sep 11, 2026, 10:30 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 11, 2026, 10:30 PM EDT
Completed Not applicable Interventional Results available

REsynchronization reVErses Remodeling in Systolic Left vEntricular Dysfunction (REVERSE)

NCT00271154
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy (CRT) Device or Implantable Cardioverter Defibrillator (ICD) with CRT
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
684 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
34
States / cities
Huntsville, Alabama • Anchorage, Alaska • Redwood City, California + 31 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2012 · Synced Sep 11, 2026, 10:30 PM EDT
Completed Not applicable Interventional

Engaging Patients in Heart Failure Management

NCT02682251
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
PHR Messaging
Other
Lead sponsor
Parkview Health
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Fort Wayne, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 29, 2019 · Synced Sep 11, 2026, 10:30 PM EDT
Recruiting Not applicable Interventional

Mechanistic Clinical Trial of Advanced Imaging for CRT

NCT03398369
View directory record Official record
Conditions
Heart Failure, Systolic
Interventions
CMR/CTA Guidance for CRT
Diagnostic Test
Lead sponsor
University of Virginia
Other
Eligibility
20 Years to 90 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Sep 11, 2026, 10:30 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 11, 2026, 10:30 PM EDT
Completed Not applicable Interventional

Optimization of CRT Using an ECG Vest

NCT02699944
View directory record Official record
Conditions
Heart Failure
Interventions
ECG Vest Optimization
Device
Lead sponsor
Alan J. Bank, MD
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 22, 2021 · Synced Sep 11, 2026, 10:30 PM EDT
Completed Not applicable Interventional Results available

Adaptive Cardiac Resynchronization Therapy Study

NCT00980057
View directory record Official record
Conditions
Heart Failure
Interventions
Adaptive CRT (aCRT), Echo
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
522 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
55
States / cities
Huntsville, Alabama • Anchorage, Alaska • Phoenix, Arizona + 52 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2018 · Synced Sep 11, 2026, 10:30 PM EDT
Completed Phase 2 Interventional Results available

Evaluating Ventricular Arrhythmia in Subjects With Implantable Cardioverter Defibrillator or Cardiac Resynchronization Therapy-Defibrillator

NCT02104583
View directory record Official record
Conditions
Ventricular Arrhythmia
Interventions
Eleclazine, Placebo to match eleclazine
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 80 Years
Enrollment
313 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
37
States / cities
Mesa, Arizona • Long Beach, California • Los Angeles, California + 32 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2019 · Synced Sep 11, 2026, 10:30 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 11, 2026, 10:30 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 11, 2026, 10:30 PM EDT
Completed Not applicable Interventional

Left Ventricular Capture Management (LVCM) Software Download Clinical Trial

NCT00268281
View directory record Official record
Conditions
Heart Failure
Interventions
Left Ventricular Capture Management Software
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
18
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Palo Alto, California + 15 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2006 · Synced Sep 11, 2026, 10:30 PM EDT