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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 (CRT) Clear all
Completed Not applicable Interventional Results available

Sensor Optimization of Cardiac Resynchronization Therapy Response

NCT01832493
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
3
States / cities
Des Moines, Iowa • Columbus, Ohio • Fairfield, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 28, 2016 · Synced Sep 28, 2026, 12:12 PM EDT
Completed No phase listed Observational

Personalized CRT - PSR

NCT03723265
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy
Device
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
1,517 participants
Timeline
2012 – 2022
U.S. locations
88
States / cities
Birmingham, Alabama • Anchorage, Alaska • Gilbert, Arizona + 85 more
Source: ClinicalTrials.gov public record
Updated May 19, 2022 · Synced Sep 28, 2026, 12:12 PM EDT
Completed No phase listed Observational

ECGi of SyncAV With MultiPoint Pacing

NCT06444386
View directory record Official record
Conditions
Cardiac Resynchronization Therapy
Interventions
MPP + SyncAV
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2024 · Synced Sep 28, 2026, 12:12 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 28, 2026, 12:12 PM 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 28, 2026, 12:12 PM EDT
Completed No phase listed Observational

Reverse Electrical Remodeling of Native Conduction in Cardiac Resynchronization Therapy

NCT01924221
View directory record Official record
Conditions
Heart Failure, Patients Undergoing CRT-D Device Implantation
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 29, 2022 · Synced Sep 28, 2026, 12:12 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 28, 2026, 12:12 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 Sep 28, 2026, 12:12 PM EDT
Completed No phase listed Observational Results available

Strategic MAnagement to Optimize Response To Cardiac Resynchronization Therapy Registry

NCT03075215
View directory record Official record
Conditions
Heart Failure
Interventions
Device Programming of the Boston Scientific Cardiac Resynchronization Therapy Defibrillator (CRT-D)
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,044 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
29
States / cities
Anchorage, Alaska • Mesa, Arizona • Jonesboro, Arkansas + 26 more
Source: ClinicalTrials.gov public record
Updated Oct 24, 2023 · Synced Sep 28, 2026, 12:12 PM EDT
Completed No phase listed Observational Results available

PARTNERS HF: Program to Access and Review Trending Information and Evaluate Correlation to Symptoms in Patients With Heart Failure

NCT00279955
View directory record Official record
Conditions
Heart Failure, Congestive
Interventions
Cardiac Resynchronization Therapy Device
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
1,024 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
93
States / cities
Huntsville, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 90 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2012 · Synced Sep 28, 2026, 12:12 PM EDT
Not listed Not applicable Interventional

Cardiac Magnetic Resonance Imaging After Cardiac Resynchronization Therapy

NCT03183011
View directory record Official record
Conditions
Heart Failure, Systolic
Interventions
MRI
Other
Lead sponsor
Kenneth Bilchick, MD
Other
Eligibility
25 Years to 85 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 11, 2017 · Synced Sep 28, 2026, 12:12 PM EDT
Completed Phase 4 Interventional Results available

'Effect of CRT on Defibrillation Threshold Estimates' Study

NCT00626093
View directory record Official record
Conditions
Sudden Cardiac Death
Interventions
Cardiac Resynchronization Therapy - Defibrillator (CRT-D)
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
2
States / cities
Santa Monica, California • Colorado Springs, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 28, 2026, 12:12 PM EDT
Completed Not applicable Interventional

Atrio-Ventricular (AV) Delay Optimization Using Echocardiography Versus the SonR Signal

NCT01287234
View directory record Official record
Conditions
Heart Failure
Interventions
Echocardiogram/SonR
Other
Lead sponsor
Piedmont Healthcare
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 19, 2012 · Synced Sep 28, 2026, 12:12 PM EDT
Completed Not applicable Interventional Results available

Promote Q Cardiac Resynchronization Therapy Defibrillator (CRT-D) and Quartet Left Ventricular Heart Lead Study

NCT00990665
View directory record Official record
Conditions
Heart Failure
Interventions
CRT-D and LV lead (Quartet™ lead and Promote Q® device system)
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
24
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Glendale, California + 20 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2019 · Synced Sep 28, 2026, 12:12 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

MRI Assessment of Patient Suitability for Cardiac Resynchronization Therapy (CRT)

NCT02728336
View directory record Official record
Conditions
Cardiac Resynchronization Therapy, Magnetic Resonance Imaging (MRI)
Interventions
Cardiac MRI
Procedure
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Sep 28, 2026, 12:12 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 28, 2026, 12:12 PM 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 28, 2026, 12:12 PM 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 28, 2026, 12:12 PM EDT
Completed Phase 4 Interventional Results available

Comparison of AV Optimization Methods Used in Cardiac Resynchronization Therapy (CRT)

NCT00677014
View directory record Official record
Conditions
Heart Failure
Interventions
AV Delay programming through cardiac resynchronization therapy
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
1,060 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 23, 2013 · Synced Sep 28, 2026, 12:12 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 28, 2026, 12:12 PM 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 28, 2026, 12:12 PM EDT
Completed Not applicable Interventional

Cardiac Resynchronization Therapy Defibrillator Based Impedance Monitoring Study

NCT00500838
View directory record Official record
Conditions
Heart Failure
Interventions
Transthoracic Impedance
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
4
States / cities
Little Rock, Arkansas • Glendale, California • Browns Mills, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 31, 2019 · Synced Sep 28, 2026, 12:12 PM EDT
Terminated Phase 1 Interventional

Cardiac Resynchronization and Iodine Meta-Iodobenzylguanidine (MIBG) Imaging

NCT01522378
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
123 iodine metaiodobenzylguanidine
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 25, 2017 · Synced Sep 28, 2026, 12:12 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 28, 2026, 12:12 PM EDT