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ClinicalTrials.gov public records Last synced Sep 18, 2026, 5:17 PM EDT

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Showing 1–24 of 85 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: CRT device implant Clear all
Completed No phase listed Observational Results available

BlueSync Field Evaluation

NCT03518658
View directory record Official record
Conditions
Bradycardia
Interventions
Evaluation Group, Control Group (Historical)
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
257 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
11
States / cities
Palo Alto, California • Hartford, Connecticut • Daytona Beach, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced Sep 18, 2026, 5:17 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 18, 2026, 5:17 PM EDT
Completed Not applicable Interventional

Optimal Coronary Sinus Lead Implantation Using Intracardiac Impedography and Magnetic Resonance Imaging

NCT01129635
View directory record Official record
Conditions
Heart Failure, Systolic, Left Bundle Branch Block
Interventions
Cardiac Resynchronization Therapy (CRT) implantation
Procedure
Lead sponsor
Emory University
Other
Eligibility
Not listed
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 20, 2015 · Synced Sep 18, 2026, 5:17 PM EDT
Terminated Phase 1 Interventional

A Study to Learn How Safe Study Drug BAY2413555 is, How it Affects the Body, and How it Moves Into, Through, and Out of the Body Over 4 Weeks of Use in Participants With Heart Failure and Implanted Cardiac Defibrillator or Cardiac Resynchronization Devices (ICD/CRT)

NCT05532046
View directory record Official record
Conditions
Chronic Heart Failure
Interventions
BAY2413555 Dose 1, BAY2413555 Dose 2, Placebo to BAY2413555
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 79 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
3
States / cities
Atlanta, Georgia • Silver Spring, Maryland • Camp Hill, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 11, 2024 · Synced Sep 18, 2026, 5:17 PM EDT
Completed Not applicable Interventional Results available

Model 4396 Left Ventricular (LV) Lead Study

NCT00853593
View directory record Official record
Conditions
Heart Failure
Interventions
Pacing Lead
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
19
States / cities
Pasadena, California • Sacramento, California • Atlantis, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2019 · Synced Sep 18, 2026, 5:17 PM 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 18, 2026, 5:17 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 18, 2026, 5:17 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 18, 2026, 5:17 PM 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 Sep 18, 2026, 5:17 PM EDT
Completed Not applicable Interventional Results available

Safety and Efficacy of Automatic Testing Feature in New ICDs and CRT-Ds

NCT00746356
View directory record Official record
Conditions
Heart Failure, Ventricular Arrythmias
Interventions
Testing of the autocapture features of the device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
5
States / cities
Little Rock, Arkansas • Browns Mills, New Jersey • Nashville, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Feb 18, 2019 · Synced Sep 18, 2026, 5:17 PM 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 Sep 18, 2026, 5:17 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 18, 2026, 5:17 PM EDT
Withdrawn Not applicable Interventional

Patent Foramen Ovale (PFO) Closure at the Time of Endovascular Cardiac Electronic Device Implantation

NCT03232450
View directory record Official record
Conditions
Foramen Ovale, Patent
Interventions
Aspirin, Cardiovascular Implantable Device (CIED), Gore Cardioform Septal Occluder
Drug · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 12, 2020 · Synced Sep 18, 2026, 5:17 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 17, 2023 · Synced Sep 18, 2026, 5:17 PM 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 18, 2026, 5:17 PM EDT
Completed Not applicable Interventional Results available

Conduction System Pacing Optimized Therapy

NCT04905290
View directory record Official record
Conditions
Heart Failure
Interventions
Left ventricular coronary sinus (BiV) configuration, Conduction system pacing-only configuration, Conduction System Pacing Optimized Therapy (CSPOT) configuration
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
7
States / cities
Tampa, Florida • Chicago, Illinois • Houma, Louisiana + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2025 · Synced Sep 18, 2026, 5:17 PM EDT
Recruiting No phase listed Observational

The WiSE®-UP Study (The WiSE System Utilization & Performance Study)

NCT07098858
View directory record Official record
Conditions
Heart Failure
Interventions
The Wise System
Device
Lead sponsor
EBR Systems, Inc.
Industry
Eligibility
22 Years and older
Enrollment
320 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2032
U.S. locations
12
States / cities
Mesa, Arizona • Scottsdale, Arizona • Jonesboro, Arkansas + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Sep 18, 2026, 5:17 PM 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 Sep 18, 2026, 5:17 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 18, 2026, 5:17 PM 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 Sep 18, 2026, 5:17 PM EDT
Recruiting No phase listed Observational

CCM OPEN HF Registry

NCT07112924
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Impulse Dynamics
Industry
Eligibility
18 Years and older
Enrollment
5,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2036
U.S. locations
28
States / cities
Mesa, Arizona • Phoenix, Arizona • Surprise, Arizona + 21 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Sep 18, 2026, 5:17 PM 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 18, 2026, 5:17 PM EDT
Terminated No phase listed Observational

Heart Failure and Risk of Re-Admissions Determined by Abnormal REVEAL Parameters

NCT01357408
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 6, 2013 · Synced Sep 18, 2026, 5:17 PM EDT
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 4, 2021 · Synced Sep 18, 2026, 5:17 PM EDT