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Showing 1–24 of 71 matching trials from the live ClinicalTrials.gov search.
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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 4, 2021 · Synced Sep 25, 2026, 9:44 PM EDT
Withdrawn Phase 1 Interventional

Study to Determine the Safety and Feasibility of Utilizing the CD Leycom Pressure/Conductance Catheter to Determine Optimal LV Pacing Site

NCT01586884
View directory record Official record
Conditions
Heart Failure
Interventions
Pressure/Conductance Catheter
Procedure
Lead sponsor
Lancaster General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 8, 2014 · Synced Sep 25, 2026, 9:44 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 25, 2026, 9:44 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 18, 2017 · Synced Sep 25, 2026, 9:44 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 25, 2026, 9:44 PM EDT
Completed Not applicable Interventional Results available

Evaluation of ACUITY™ X4 Quadripolar Coronary Venous Leads and RELIANCE™ 4-FRONT Defibrillation Leads

NCT02071173
View directory record Official record
Conditions
Cardiac Resynchronization Therapy
Interventions
ACUITY X4 quadripolar coronary venous lead and RELIANCE 4-FRONT defibrillation lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,244 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
96
States / cities
Birmingham, Alabama • Huntsville, Alabama • Anchorage, Alaska + 85 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2021 · Synced Sep 25, 2026, 9:44 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 15, 2019 · Synced Sep 25, 2026, 9:44 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 25, 2026, 9:44 PM 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 Sep 25, 2026, 9:44 PM EDT
Completed No phase listed Observational Results available

QuickFlex Micro Left Ventricular Lead Post Approval Study

NCT01179477
View directory record Official record
Conditions
Heart Failure
Interventions
Implantation of a QuickFlex® μ Model 1258T LV Lead
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,930 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
77
States / cities
Birmingham, Alabama • Huntsville, Alabama • Anchorage, Alaska + 67 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2019 · Synced Sep 25, 2026, 9:44 PM EDT
Not listed No phase listed Observational

The Registry Evaluating Functional Outcomes of Resynchronization Management

NCT00959179
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Not listed
Lead sponsor
Saint Luke's Health System
Other
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
2
States / cities
Elgin, Illinois • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 13, 2009 · Synced Sep 25, 2026, 9:44 PM EDT
Terminated No phase listed Observational

Symptomatic CRT Patients: Real-World Experience - Barostim™ Advancing the Level of Clinical Evidence

NCT05860348
View directory record Official record
Conditions
Heart Failure
Interventions
Barostim™ System
Device
Lead sponsor
CVRx, Inc.
Industry
Eligibility
Not listed
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
3
States / cities
Aurora, Colorado • Fort Lauderdale, Florida • Hackettstown, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 7, 2025 · Synced Sep 25, 2026, 9:44 PM EDT
Terminated No phase listed Observational Results available

MediGuide Registry

NCT02470312
View directory record Official record
Conditions
Heart Failure, Cardiac Arrhythmia
Interventions
CRT implantation, MediGuide, EP
Procedure · Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
Not listed
Enrollment
578 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
6
States / cities
Phoenix, Arizona • Athens, Georgia • Lawrenceville, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Sep 25, 2026, 9:44 PM EDT
Terminated Phase 3 Interventional Results available

AV Node Ablation and Pacemaker Therapy Compared to Drug Therapy for Atrial Fibrillation - Pilot Study

NCT00589303
View directory record Official record
Conditions
Atrial Fibrillation, Heart Failure
Interventions
FDA approved rate and rhythm control drugs, AV Node ablation and device implant
Drug · Device
Lead sponsor
Mayo Clinic
Other
Eligibility
65 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
5
States / cities
Scottsdale, Arizona • Evansville, Indiana • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2013 · Synced Sep 25, 2026, 9:44 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 22, 2026 · Synced Sep 25, 2026, 9:44 PM EDT
Withdrawn Early Phase 1 Interventional

Placement of CS/LV Pacing Leads With EnSite NavX Guidance

NCT00577187
View directory record Official record
Conditions
Heart Failure
Interventions
EnSite NavX-Guided CRT implant
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Sep 25, 2026, 9:44 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 25, 2026, 9:44 PM EDT
Completed No phase listed Observational Results available

Physiologic Pacing Registry

NCT03719040
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction, Heart Block, Syncope, Cardiomyopathies, Ventricular Tachycardia, Heart Failure
Interventions
Physiologic pacing device implant
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
870 participants
Timeline
2018 – 2021
U.S. locations
26
States / cities
Huntsville, Alabama • Burlingame, California • San Diego, California + 22 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2024 · Synced Sep 25, 2026, 9:44 PM EDT
Terminated Not applicable Interventional Results available

Sentus QP - Extended CRT Evaluation With Quadripolar Left Ventricular Leads

NCT02290028
View directory record Official record
Conditions
Heart Failure
Interventions
Sentus QP left ventricular lead
Device
Lead sponsor
Biotronik SE & Co. KG
Industry
Eligibility
18 Years and older
Enrollment
2,226 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
75
States / cities
Fairhope, Alabama • Anchorage, Alaska • Chula Vista, California + 64 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2021 · Synced Sep 25, 2026, 9:44 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 25, 2026, 9:44 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 1, 2025 · Synced Sep 25, 2026, 9:44 PM EDT
Terminated Phase 2 Interventional Results available

Sacral Nerve Stimulation in Treating Low Anterior Resection Syndrome or Fecal Incontinence in Patients With Locally Advanced Rectal Cancer or Other Pelvic Cancer, the RESTORE Study

NCT04066894
View directory record Official record
Conditions
Low Anterior Resection Syndrome, Malignant Anal Neoplasm, Malignant Bladder Neoplasm, Malignant Cervical Neoplasm, Malignant Ovarian Neoplasm, Malignant Pelvic Neoplasm, Malignant Prostate Neoplasm, Malignant Uterine Neoplasm, Malignant Vaginal Neoplasm, Malignant Vulvar Neoplasm, Rectal Carcinoma
Interventions
Explantation, Quality-of-Life Assessment, Questionnaire Administration, Sacral Nerve Stimulator, Sacral Nerve Stimulator Battery, Therapeutic Conventional Surgery
Procedure · Other · Device
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Houston, Texas • Sugar Land, Texas
Source: ClinicalTrials.gov public record
Updated Aug 13, 2023 · Synced Sep 25, 2026, 9:44 PM 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 25, 2026, 9:44 PM EDT
Completed No phase listed Observational

Prospective Registry of Epicardial LV Leads Placed During Cardiac Surgery Procedures

NCT00288288
View directory record Official record
Conditions
Chronic Heart Failure
Interventions
Epicardial left ventricular lead placement, Transvenous left ventricular lead implant
Procedure
Lead sponsor
University of Kansas
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 24, 2012 · Synced Sep 25, 2026, 9:44 PM EDT