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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Cardiac Resynchronization Therapy Clear all
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 Jun 26, 2026, 4:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Biomarkers to Predict CRT Response in Patients With HF (BIOCRT)

NCT01949246
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
221 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 2, 2022 · Synced Jun 26, 2026, 4:27 AM EDT
Completed Phase 4 Interventional Results available

Response of Cardiac Resynchronization Therapy Optimization With Ventricle to Ventricle Timing in Heart Failure Patients

NCT00187200
View directory record Official record
Conditions
Heart Failure
Interventions
Simultaneous VV Pacing, Sequential VV Pacing
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
816 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Jun 26, 2026, 4:27 AM EDT
Completed No phase listed Observational

Risk Stratification and Benefits With Cardiac Resynchronization Therapy (CRT)

NCT00996086
View directory record Official record
Conditions
Heart Failure, Ventricular Arrhythmias
Interventions
CRT device implant
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
2
States / cities
New York, New York • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Jun 26, 2026, 4:27 AM 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 Jun 26, 2026, 4:27 AM EDT
Completed Not applicable Interventional

InSync III Marquis Model 7279 Cardioverter Defibrillator Cardiac Resynchronization System

NCT00271232
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
238 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
34
States / cities
Anchorage, Alaska • Phoenix, Arizona • Los Angeles, California + 31 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2007 · Synced Jun 26, 2026, 4:27 AM EDT
Completed Phase 4 Interventional Results available

TRIAGE-CRT Telemonitoring in Patients With CHF and Indication of CRT-D

NCT00395642
View directory record Official record
Conditions
Congestive Heart Failure, Cardiac Resynchronization Therapy
Interventions
Kronos LV-T, Lumax HF-T
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
12
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Wilmington, Delaware + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 19, 2010 · Synced Jun 26, 2026, 4:27 AM EDT
Recruiting Not applicable Interventional

His-Bundle Corrective Pacing in Heart Failure

NCT05265520
View directory record Official record
Conditions
Right Bundle-Branch Block, Heart Failure, His-bundle Pacing, Cardiac Resynchronization Therapy
Interventions
His-CRT implantation, BIV-CRT implantation
Procedure
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
14
States / cities
Phoenix, Arizona • Los Angeles, California • Tampa, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2026 · Synced Jun 26, 2026, 4:27 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 Jun 26, 2026, 4:27 AM EDT
Terminated No phase listed Observational Results available

Optisure Lead Post Approval Study

NCT02235545
View directory record Official record
Conditions
Heart Failure, Tachycardia, Ventricular
Interventions
St. Jude Medical Optisure Lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,735 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
46
States / cities
Birmingham, Alabama • Phoenix, Arizona • Jonesboro, Arkansas + 42 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Jun 26, 2026, 4:27 AM EDT
Completed No phase listed Observational

3T MRI CIED Post-Approval Study

NCT02969395
View directory record Official record
Conditions
Cardiac Rhythm Disorder
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
118
States / cities
Birmingham, Alabama • Anchorage, Alaska • Chandler, Arizona + 115 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2022 · Synced Jun 26, 2026, 4:27 AM 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 Jun 26, 2026, 4:27 AM EDT
Completed Not applicable Interventional

Cardiac Resynchronization Therapy in Pulmonary Hypertension

NCT03077139
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Cardiac Resynchronization Therapy (CRT)
Device
Lead sponsor
Dr. Daniel P Morin, MD MPH FHRS
Other
Eligibility
18 Years to 75 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Sep 19, 2017 · Synced Jun 26, 2026, 4:27 AM EDT
Completed No phase listed Observational

Precision Event Monitoring for Patients With Heart Failure Using HeartLogic

NCT03579641
View directory record Official record
Conditions
Heart Failure, Defibrillators, Implantable, Monitoring, Physiologic, Cardiac Resynchronization Therapy, Cardiovascular Disease, Heart Disease
Interventions
HeartLogic Sensors
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
56
States / cities
Birmingham, Alabama • Jonesboro, Arkansas • Little Rock, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Oct 24, 2022 · Synced Jun 26, 2026, 4:27 AM 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 Jun 26, 2026, 4:27 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 Jun 26, 2026, 4:27 AM EDT
Completed Phase 2Phase 3 Interventional

Device Evaluation of Contak Renewal 2and Easytrak 2 - DECREASE-HF

NCT00158951
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
CONTAK RENEWAL 2/4/4HE CRT-D, EASYTRAK 2 Lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 24, 2007 · Synced Jun 26, 2026, 4:27 AM 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 Jun 26, 2026, 4:27 AM 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 Jun 26, 2026, 4:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Strategic Management to Optimize Response To Cardiac Resynchronization Therapy

NCT03089281
View directory record Official record
Conditions
Heart Failure
Interventions
CRT-D
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
699 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
41
States / cities
Birmingham, Alabama • Huntsville, Alabama • Tucson, Arizona + 37 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2022 · Synced Jun 26, 2026, 4:27 AM EDT
Completed No phase listed Observational

Dual-Source Computed Tomography to Improve Prediction of Response to Cardiac Resynchronization Therapy

NCT01097733
View directory record Official record
Conditions
Heart Failure - NYHA II - IV, Wide QRS Complex
Interventions
Randomization of Pre-knowledge of CT coronary venography
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 2, 2022 · Synced Jun 26, 2026, 4:27 AM EDT
Terminated No phase listed Observational Results available

OMNI Study--Assessing Therapies in Medtronic Pacemaker, Defibrillator, and Cardiac Resynchronization Therapy Devices.

NCT00277524
View directory record Official record
Conditions
Tachycardia, Ventricular, Heart Failure, Congestive, Ventricular Fibrillation, Ventricular Dysfunction, Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
3,032 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
113
States / cities
Tucson, Arizona • Little Rock, Arkansas • Fresno, California + 107 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2013 · Synced Jun 26, 2026, 4:27 AM EDT
Completed Not applicable Interventional

Clinical Investigation of the Medtronic Concerto™ Device

NCT00268320
View directory record Official record
Conditions
Congestive Heart Failure, Atrial Arrhythmia, Atrial Tachyarrhythmia, Atrial Fibrillation
Interventions
Cardiac Resynchronization Therapy+Implantable Cardioverter Defibrillator
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
30
States / cities
Anchorage, Alaska • Phoenix, Arizona • Santa Monica, California + 27 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2008 · Synced Jun 26, 2026, 4:27 AM 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 Jun 26, 2026, 4:27 AM EDT