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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
Terminated Not applicable Interventional Results available

Effect of Posture on Left Ventricular (LV) Transvenous Lead Capture Thresholds (EXPECT)

NCT01520714
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Medtronic 4195 active fixation LV lead and Medtronic passive fixation LV lead
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Plano, Texas
Source: ClinicalTrials.gov public record
Updated May 25, 2014 · Synced Sep 17, 2026, 6:24 PM 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 Sep 17, 2026, 6:24 PM EDT
Completed Not applicable Interventional

Feasibility Study of an Integrated Diagnostic System to Manage Heart Failure

NCT01045343
View directory record Official record
Conditions
Heart Failure
Interventions
Integrated diagnositic system, Routine in office visits
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
13
States / cities
Anchorage, Alaska • Aurora, Colorado • Tampa, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2012 · Synced Sep 17, 2026, 6:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Comparing Rate Response With CLS Versus Accelerometer ICD Settings in Heart Failure Patients With BIOTRONIK CRT-Ds

NCT02693262
View directory record Official record
Conditions
Heart Failure, ICD, Chronotropic Incompetence
Interventions
CLS Mode on Biotronik CRT-D, Accelerometer Mode on Biotronik CRT-D
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 99 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Aug 4, 2021 · Synced Sep 17, 2026, 6:24 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 17, 2026, 6:24 PM EDT
Terminated No phase listed Observational

Atrial Fibrillation Associated With Heart Failure Treated by BIOTRONIK's CRT-DX System

NCT04870281
View directory record Official record
Conditions
Heart Failure, Atrial Fibrillation, Cardiac Resynchronization Therapy
Interventions
CRT-DX
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
23
States / cities
La Jolla, California • Ventura, California • Orlando, Florida + 18 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2022 · Synced Sep 17, 2026, 6:24 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 17, 2026, 6:24 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 17, 2026, 6:24 PM EDT
Terminated Not applicable Interventional Results available

Pacing Affects Cardiovascular Endpoints in Patients With Right Bundle-Branch Block (The PACE-RBBB Trial)

NCT01169493
View directory record Official record
Conditions
Heart Failure, Right Bundle-Branch Block
Interventions
VVI-40, RV DDD-40, BiV DDD-40
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 22, 2016 · Synced Sep 17, 2026, 6:24 PM EDT
Completed No phase listed Observational Results available

Quadripolar CRT-D On Currently Approved Lead SystemS

NCT02232984
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
749 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
60
States / cities
Gilbert, Arizona • Phoenix, Arizona • Yuma, Arizona + 49 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2019 · Synced Sep 17, 2026, 6:24 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 17, 2026, 6:24 PM 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 Sep 17, 2026, 6:24 PM EDT
Completed Not applicable Interventional Results available

MADIT-CRT: Multicenter Automatic Defibrillator Implantation With Cardiac Resynchronization Therapy

NCT00180271
View directory record Official record
Conditions
Tachycardia, Congestive Heart Failure
Interventions
Cardiac resynchronization therapy with defibrillation, Implantable Cardioverter Defibrillator (ICD)
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
21 Years and older
Enrollment
1,820 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 17, 2026, 6:24 PM EDT
Completed No phase listed Observational

Cutaneous Heart Sounds Data Collection During Cardiac Resynchronization Therapy (CRT) Optimization Study

NCT01609985
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
5
States / cities
Riverside, California • Orlando, Florida • Duluth, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2013 · Synced Sep 17, 2026, 6:24 PM EDT
Completed Phase 4 Interventional Results available

PEGASUS CRT Study: Atrial Support Study in Cardiac Resynchronization Therapy

NCT00146848
View directory record Official record
Conditions
Heart Failure
Interventions
Atrial support pacing through cardiac resynchronization therapy. Device: RENEWAL family of CRT-D devices
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
1,742 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 27, 2011 · Synced Sep 17, 2026, 6:24 PM EDT
Completed Not applicable Interventional

Optimizing Left Ventricular Lead To Improve Cardiac Output

NCT01399801
View directory record Official record
Conditions
Ischemic Congestive Cardiomyopathy, Dilated Cardiomyopathy, Congestive Heart Failure
Interventions
Doppler flow measurement, standard implantation of the LV lead
Procedure
Lead sponsor
Ann Marie Chikowski
Other
Eligibility
Not listed
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Wynnewood, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 29, 2022 · Synced Sep 17, 2026, 6:24 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 17, 2026, 6:24 PM EDT
Terminated No phase listed Observational

AVJ Ablation Followed by Resynchronization Therapy in Patients With CHF and AF

NCT00547794
View directory record Official record
Conditions
Atrial Fibrillation, Congestive Heart Failure
Interventions
Not listed
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Sep 17, 2026, 6:24 PM EDT
Terminated Not applicable Interventional

Optimizing CRT With ECGI

NCT03492788
View directory record Official record
Conditions
Heart Failure, Systolic, Left Bundle-Branch Block
Interventions
ECGI-optimized VV-offset, Zero VV-offset
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 100 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 30, 2019 · Synced Sep 17, 2026, 6:24 PM EDT
Completed No phase listed Observational

Response to Cardiac Resynchronization Therapy of Previously Right Ventricular Paced Heart Failure Patients

NCT01466621
View directory record Official record
Conditions
Heart Failure, Pacing Induced Dyssynchrony
Interventions
Not listed
Lead sponsor
Allina Health System
Other
Eligibility
18 Years and older
Enrollment
743 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 23, 2016 · Synced Sep 17, 2026, 6:24 PM EDT
Completed Not applicable Interventional

Stimulus Intensity in Left Ventricular Leads

NCT01060449
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
LV stimulus intensity
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 16, 2013 · Synced Sep 17, 2026, 6:24 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 17, 2026, 6:24 PM EDT
Completed Not applicable Interventional Results available

CRT Implant Strategy Using the Longest Electrical Delay for Non-left Bundle Branch Block Patients

NCT01983293
View directory record Official record
Conditions
Non-left Bundle Branch Block, Ischemic or Non-ischemic Cardiomyopathy
Interventions
QLV based implant strategy, Standard of care implant strategy
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
32
States / cities
Glendale, California • Los Angeles, California • Mission Viejo, California + 25 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2019 · Synced Sep 17, 2026, 6:24 PM EDT
Completed No phase listed Observational

Prospective Minnesota Study of ECHO Tissue Doppler Imaging in Cardiac Resynchronization Therapy

NCT00158015
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Hennepin Healthcare Research Institute
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
7
States / cities
Coon Rapids, Minnesota • Edina, Minnesota • Minneapolis, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 3, 2012 · Synced Sep 17, 2026, 6:24 PM EDT