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ClinicalTrials.gov public records Last synced Sep 30, 2026, 1:26 PM EDT

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Showing 25–48 of 71 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: CRT implantation Clear all
Completed Not applicable Interventional Results available

His Bundle Pacing Versus Coronary Sinus Pacing for Cardiac Resynchronization Therapy

NCT02700425
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
CRT Pacemaker
Device
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
8
States / cities
Los Angeles, California • Chicago, Illinois • Naperville, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2021 · Synced Sep 30, 2026, 1:26 PM EDT
Not listed Phase 1 Interventional

Cardiac MRI for Optimal Heart Failure Outcomes With CRT Upgrades

NCT03504891
View directory record Official record
Conditions
Chronic Systolic Heart Failure, Paroxysmal VT
Interventions
MRI prior to CRT Upgrade, MRI prior to de novo CRT
Diagnostic Test
Lead sponsor
University of Virginia
Other
Eligibility
25 Years to 89 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 3, 2018 · Synced Sep 30, 2026, 1:26 PM EDT
Active, not recruiting Phase 3 Interventional Results available

Androgen-Deprivation Therapy and Radiation Therapy in Treating Patients With Prostate Cancer

NCT01368588
View directory record Official record
Conditions
Prostate Cancer
Interventions
three-dimensional conformal radiotherapy, intensity modulated radiotherapy, Brachytherapy, Anti-androgen, luteinizing hormone-releasing hormone (LHRH) agonist or antagonist
Radiation · Drug
Lead sponsor
Radiation Therapy Oncology Group
Network
Eligibility
18 Years and older · Male only
Enrollment
2,590 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2031
U.S. locations
454
States / cities
Mobile, Alabama • Anchorage, Alaska • Fairbanks, Alaska + 351 more
Source: ClinicalTrials.gov public record
Updated May 8, 2026 · Synced Sep 30, 2026, 1:26 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 13, 2019 · Synced Sep 30, 2026, 1:26 PM EDT
Completed Not applicable Interventional

Radial Strain ECHO-Guided Implantation of Cardiac Resynchronization Therapy

NCT01603706
View directory record Official record
Conditions
Ischemic Cardiomyopathy
Interventions
Echo guided implantation group
Procedure
Lead sponsor
Sheba Medical Center
Government
Eligibility
18 Years and older
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 19, 2017 · Synced Sep 30, 2026, 1:26 PM EDT
Not yet recruiting Not applicable Interventional

Advancing Clinical Heart Failure Outcomes Leveraging Defibrillation Lead Implant System for Left Bundle Branch Area Pacing

NCT07526896
View directory record Official record
Conditions
Heart Failure, Systolic Bundle Branch Block, Left
Interventions
LBBAP Therapy, LOT-CRT, ICD
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 30, 2026, 1:26 PM EDT
Completed No phase listed Observational

Identification of the Pericardiophrenic Vein During Cardiac Device Implant Procedures to Prevent Extracardiac Stimulation

NCT01008670
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Respicardia, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
6
States / cities
Birmingham, Alabama • Baltimore, Maryland • Cincinnati, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2010 · Synced Sep 30, 2026, 1:26 PM EDT
Completed Not applicable Interventional

EnSite NavX-Guided Coronary Sinus Mapping During CRT Implant

NCT01615835
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
EnSite NavX System
Other
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years to 75 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
2
States / cities
Augusta, Georgia • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 30, 2026, 1:26 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 4, 2014 · Synced Sep 30, 2026, 1:26 PM EDT
Terminated Not applicable Interventional

Vascular Endothelial Function and Cardiac Resynchronization Response in Patients With Heart Failure

NCT02783716
View directory record Official record
Conditions
Heart Failure
Interventions
Subcutaneous adipose tissue collection, Peripheral arterial tonometry (PAT)
Procedure · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 18, 2023 · Synced Sep 30, 2026, 1:26 PM EDT
Completed Not applicable Interventional Results available

Adaptive CRT Effect on Electrical Dyssynchrony

NCT02543281
View directory record Official record
Conditions
Cardiomyopathy, Heart Failure, Left Bundle Branch Block
Interventions
Adaptive cardiac resynchronization therapy, Conventional Cardiac Resynchronization Therapy
Device
Lead sponsor
Larisa Tereshchenko
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 20, 2025 · Synced Sep 30, 2026, 1:26 PM 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 28, 2013 · Synced Sep 30, 2026, 1:26 PM EDT
Active, not recruiting Not applicable Interventional

ASCEND CSP IDE Study

NCT06830746
View directory record Official record
Conditions
Heart Failure, Ventricular Arrythmia
Interventions
LBBAP Implant with a CSP ICD Lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years to 99 Years
Enrollment
414 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
16
States / cities
Huntsville, Alabama • Phoenix, Arizona • Jonesboro, Arkansas + 13 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Sep 30, 2026, 1:26 PM EDT
Completed Not applicable Interventional

Correlating QLV Interval to Left Ventricular (LV) Lead Position in Patients Receiving Cardiac Resynchronization Therapy.

NCT02166762
View directory record Official record
Conditions
Heart Failure, Cardiomyopathy, Cardiac Arrhythmia
Interventions
QLV interval measurement
Procedure
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 7, 2019 · Synced Sep 30, 2026, 1:26 PM EDT
Not listed No phase listed Observational

Amyloidosis Incidence in High-Risk Cardiac Device Patients

NCT06186167
View directory record Official record
Conditions
Amyloid, Cardiac Amyloidosis, Amyloidosis Cardiac, Systemic Amyloidosis, AL Amyloidosis, Infiltrative Cardiomyopathy, Amyloid, ATTR Amyloidosis Wild Type
Interventions
Chest Wall Fat Tissue Collection
Procedure
Lead sponsor
Midwest Heart & Vascular Specialists
Other
Eligibility
40 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 20, 2024 · Synced Sep 30, 2026, 1:26 PM EDT
Recruiting Not applicable Interventional

Left vs Left Randomized Clinical Trial

NCT05650658
View directory record Official record
Conditions
Heart Failure, Heart Failure With Reduced Ejection Fraction, AV Block, LBBB, RBBB, Intraventricular Conduction Delay, Pacing-Induced Cardiomyopathy
Interventions
His/LBBP, BiVP
Device
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years and older
Enrollment
2,136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
57
States / cities
Gilbert, Arizona • Tucson, Arizona • Little Rock, Arkansas + 46 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2025 · Synced Sep 30, 2026, 1:26 PM EDT
Completed Not applicable Interventional Results available

Safety and Efficacy Study of the QuickFlex Micro Model 1258T Left Heart Pacing Lead

NCT00763698
View directory record Official record
Conditions
Heart Failure
Interventions
QuickFlex Micro Model 1258T Left Heart Lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
13
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Glendale, California + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2019 · Synced Sep 30, 2026, 1:26 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 17, 2021 · Synced Sep 30, 2026, 1:26 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 30, 2022 · Synced Sep 30, 2026, 1:26 PM EDT
Completed No phase listed Observational Results available

Longitudinal Surveillance Study of the 4-SITE Lead/Header System

NCT01596595
View directory record Official record
Conditions
Primary Prevention of Sudden Cardiac Arrest, Secondary Prevention of Sudden Cardiac Arrest
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
Not listed
Enrollment
1,820 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2020
U.S. locations
104
States / cities
Anchorage, Alaska • Glendale, Arizona • Mesa, Arizona + 94 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2021 · Synced Sep 30, 2026, 1:26 PM EDT
Completed No phase listed Observational

Quadripolar Pacing Post Approval Study

NCT01555619
View directory record Official record
Conditions
Heart Failure
Interventions
CRT-D System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,971 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
71
States / cities
Birmingham, Alabama • Huntsville, Alabama • Montgomery, Alabama + 68 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2019 · Synced Sep 30, 2026, 1:26 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 11, 2023 · Synced Sep 30, 2026, 1:26 PM EDT
Completed No phase listed Observational

RISK Stratification Using a Combination of Cardiac Troponin T and Brain Natriuretic Peptide in Patients Receiving CRT-D

NCT00453622
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy-Defibrillator
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years to 90 Years
Enrollment
222 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 30, 2026, 1:26 PM EDT
Completed No phase listed Observational

DNA/RNA Analysis of Blood and Skeletal Muscle in Patients Undergoing Cardiac Resynchronization Therapy (CRT)

NCT00600392
View directory record Official record
Conditions
Cardiomyopathy (Ischemic or Non-Ischemic)
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 20, 2016 · Synced Sep 30, 2026, 1:26 PM EDT