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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 (CRT) Clear all
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 22, 2026, 6:12 AM EDT
Recruiting Not applicable Interventional

Safety and Effectiveness of Left Bundle Branch Area Pacing Versus Conventional Cardiac Resynchronization Therapy in Heart Failure

NCT07069738
View directory record Official record
Conditions
Heart Failure - NYHA II - IV
Interventions
CRT-D with a Quadripolar LV lead, CRT-D with INGEVITY+ pace/sense lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
40
States / cities
Huntsville, Alabama • Mobile, Alabama • Phoenix, Arizona + 34 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 22, 2026, 6:12 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 Sep 22, 2026, 6:12 AM 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 22, 2026, 6:12 AM 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 22, 2026, 6:12 AM EDT
Completed No phase listed Observational

iBeat Wristwatch Validation Study

NCT03711695
View directory record Official record
Conditions
Arrythmia, Cardiac
Interventions
iBeat wristwatch device
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 85 Years
Enrollment
55 participants
Timeline
2018
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 4, 2019 · Synced Sep 22, 2026, 6:12 AM EDT
Completed No phase listed Observational Results available

Advance Cardiac Resynchronization Therapy (CRT) Registry

NCT01805154
View directory record Official record
Conditions
Heart Failure
Interventions
CRT Patients
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,529 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
41
States / cities
Birmingham, Alabama • Huntsville, Alabama • Glendale, Arizona + 36 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2019 · Synced Sep 22, 2026, 6:12 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Echocardiography Guided Cardiac Resynchronization Therapy (EchoCRT)

NCT00683696
View directory record Official record
Conditions
Heart Failure, Ventricular Dyssynchrony
Interventions
Implantable Cardioverter Defibrillator with Cardiac Resynchronization Therapy (BIOTRONIK Lumax HF-T CRT-D)
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,680 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
62
States / cities
Concord, California • Los Angeles, California • Rancho Mirage, California + 46 more
Source: ClinicalTrials.gov public record
Updated Jan 16, 2018 · Synced Sep 22, 2026, 6:12 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 Sep 22, 2026, 6:12 AM EDT
Completed Not applicable Interventional Results available

SJM MRI Diagnostic Imaging Registry (IDE)

NCT02807948
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
Pacemaker, ICD, or CRT device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
189 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
58
States / cities
Scottsdale, Arizona • Tucson, Arizona • Jonesboro, Arkansas + 55 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced Sep 22, 2026, 6:12 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 Sep 22, 2026, 6:12 AM EDT
Completed No phase listed Observational

Cardiac Resynchronization Therapy (CRT) and Left Ventricular Assist Devices (LVAD) Therapy

NCT02083419
View directory record Official record
Conditions
Heart Failure
Interventions
LVAD CRT
Device
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 7, 2017 · Synced Sep 22, 2026, 6:12 AM EDT
Withdrawn No phase listed Observational

Pilot Study Using Echocardiography to Evaluate Patients With Heart Failure and Dyssynchrony Who Have a CRT-D Device

NCT01127334
View directory record Official record
Conditions
Systolic Heart Failure
Interventions
Not listed
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Apr 3, 2012 · Synced Sep 22, 2026, 6:12 AM EDT
Terminated Not applicable Interventional Results available

MIRACLE EF Clinical Study

NCT01735916
View directory record Official record
Conditions
Congestive Heart Failure, Left Bundle Branch Block, Systolic Heart Failure
Interventions
CRT-P Implant, CRT-P OFF
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
69
States / cities
Concord, California • La Jolla, California • Los Angeles, California + 62 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2017 · Synced Sep 22, 2026, 6:12 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 Sep 22, 2026, 6:12 AM EDT
Completed No phase listed Observational Results available

Medtronic Shock-Less Study on Physician Utilization of Shock Reduction Programming

NCT00856349
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Therapy Programming Report (TPR)
Behavioral
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
4,384 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
83
States / cities
Anniston, Alabama • Phoenix, Arizona • Tucson, Arizona + 80 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2014 · Synced Sep 22, 2026, 6:12 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 Sep 22, 2026, 6:12 AM 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 22, 2026, 6:12 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 Sep 22, 2026, 6:12 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Optimized Biventricular Pacing Allograft Recipients

NCT01290822
View directory record Official record
Conditions
Dilated Cardiomyopathy, Ischemic Cardiomyopathy
Interventions
BiVP, AAI Pacing
Device
Lead sponsor
Henry M. Spotnitz
Other
Eligibility
Not listed
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 5, 2016 · Synced Sep 22, 2026, 6:12 AM EDT
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 22, 2026, 6:12 AM EDT
Completed No phase listed Observational

Predicting Response to Cardiac Resynchronization Therapy in Heart Failure

NCT00359372
View directory record Official record
Conditions
Heart Failure, Left Ventricular Dysfunction
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
3
States / cities
Baltimore, Maryland • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 22, 2026, 6:12 AM 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 22, 2026, 6:12 AM 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 22, 2026, 6:12 AM EDT