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Showing 1–24 of 192 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Pacing Clear all
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 Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional

Ideal Pacer Pad Position Study

NCT03898050
View directory record Official record
Conditions
Symptomatic Bradycardia
Interventions
transcutaneous cardiac pacing
Procedure
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 4, 2022 · Synced Jul 21, 2026, 4:41 PM EDT
Active, not recruiting No phase listed Observational

Characterizing Outcomes and Real-World Experience of Cardiac Physiologic Pacing (The CORE-CPP Study)

NCT06606288
View directory record Official record
Conditions
Heart Failure
Interventions
Conduction system pacing, Bi-ventricular pacing
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
6,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2030
U.S. locations
1
States / cities
Mounds View, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional

Syncope: Pacing or Recording in the Later Years

NCT01423994
View directory record Official record
Conditions
Syncope, Heart Block, Conduction Disorder of the Heart
Interventions
pacemaker, implantable loop recorder
Procedure
Lead sponsor
Canadian Institutes of Health Research (CIHR)
Government
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 15, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Results available

Biventricular Versus Right Ventricular Pacing in Heart Failure Patients With Atrioventricular Block (BLOCK HF)

NCT00267098
View directory record Official record
Conditions
Atrioventricular Block, Heart Diseases
Interventions
Cardiac Resynchronization Therapy (CRT)
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
918 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2013
U.S. locations
51
States / cities
Anchorage, Alaska • Peoria, Arizona • Little Rock, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2014 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Results available

Predictors of Response to Biventricular Pacing in Heart Failure

NCT00156390
View directory record Official record
Conditions
Heart Failure, Wide QRS Complex
Interventions
echo-guided left ventricular lead placement, LV lead placement as per standard of care (without echo guidance)
Device · Other
Lead sponsor
Samir Saba
Other
Eligibility
18 Years and older
Enrollment
187 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 5, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Recruiting No phase listed Observational

ATrial Tachycardia PAcing Therapy in Congenital Heart

NCT03209583
View directory record Official record
Conditions
Atrial Arrhythmia, Atrial Tachycardia, Congenital Heart Disease, Pacemaker Re-Entrant Tachycardia
Interventions
Medtronic
Device
Lead sponsor
Ian Law
Other
Eligibility
Not listed
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
14
States / cities
Los Angeles, California • Orange, California • Hollywood, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Jul 21, 2026, 4:41 PM 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 Jul 21, 2026, 4:41 PM EDT
Completed No phase listed Observational

Impact of Resynchronization Therapy on Sleep Disordered Breathing in Advanced Congestive Heart Failure

NCT00521534
View directory record Official record
Conditions
Sleep Related Breathing Disorder, Congestive Heart Failure
Interventions
CRT with atrial overdrive pacing
Device
Lead sponsor
VA Pittsburgh Healthcare System
Federal
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 17, 2012 · Synced Jul 21, 2026, 4:41 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 Jul 21, 2026, 4:41 PM EDT
Recruiting No phase listed Observational

Abbott Vascular Medical Device Registry

NCT04573660
View directory record Official record
Conditions
Acute Myocardial Infarction, Restenoses, Coronary, Coronary Artery Lesions, Venous Embolism, Arterial Embolism
Interventions
Coronary and peripheral stents, Pacing catheters, Vascular plugs, Measurement and imaging (FFR and OCT), Peripheral dilatation catheters, Coronary dilatation catheters, Coronary and peripheral guidewires, Vessel closure/compression devices, Vascular access introducers
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
3,784 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2031
U.S. locations
7
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Los Angeles, California + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2025 · Synced Jul 21, 2026, 4:41 PM EDT
Not listed Not applicable Interventional

Multi-lead ECG to Effectively Optimize Resynchronization Devices: New CRT Recipients

NCT04083690
View directory record Official record
Conditions
Heart Failure, Systolic
Interventions
Reprogramming of CRT Device Settings to Optimal Electrical Synchrony
Device
Lead sponsor
Allina Health System
Other
Eligibility
18 Years to 100 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
2
States / cities
Minneapolis, Minnesota • Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 8, 2022 · Synced Jul 21, 2026, 4:41 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 Jul 21, 2026, 4:41 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 18, 2019 · Synced Jul 21, 2026, 4:41 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 Jul 21, 2026, 4:41 PM EDT
Completed No phase listed Observational

Pacemaker Utilization and Ventricular Pacing in Patients Undergoing Trans-catheter Aortic Valve Replacement (TAVR)

NCT02994667
View directory record Official record
Conditions
Ventricular Flutter, Atrioventricular Block, Intraventricular Conduction Delay, Bundle Branch Block, Pacemaker Implantation
Interventions
Permanent Pacemaker Placement
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Plano, Texas
Source: ClinicalTrials.gov public record
Updated Jan 21, 2020 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Results available

EMRI SureScan™ Clinical Study

NCT00433654
View directory record Official record
Conditions
Bradycardia, Slow Heart Beat
Interventions
Implantable Pulse Generator (IPG) and Pacing Leads (wires), Magnetic Resonance Imaging (MRI) scan
Device · Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
484 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
15
States / cities
Redwood City, California • Salinas, California • Orlando, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2025 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional

Reduce Ventricular Pacing in Dual Chamber Implantable Cardioverter Defibrillators Using AutoIntrinsic Conduction Search Study

NCT00187239
View directory record Official record
Conditions
Arrhythmia
Interventions
Autointrinsic Conduction Search Algorithm
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Pomona, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Jul 21, 2026, 4:41 PM EDT
Completed No phase listed Observational

Evaluation of Left Ventricular AutoThreshold

NCT00812201
View directory record Official record
Conditions
Heart Failure
Interventions
No intervention is used. Collection of signals only.
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
2
States / cities
Richmond, Virginia • Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Jun 27, 2022 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Phase 4 Interventional

Evaluation of the SafeR Mode in Patients With a Dual Chamber Pacemaker Indication

NCT00562107
View directory record Official record
Conditions
Assess the Benefits From the AAISafeR/SafeR Algorithm of Symphony 2550 or REPLYTM DR in a Wide Range of Pacemaker Patients.
Interventions
Symphony DR 2550 and REPLY DR cardiac pacemakers
Device
Lead sponsor
LivaNova
Industry
Eligibility
Not listed
Enrollment
650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
Brighton, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 28, 2014 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional

Humanitarian Device Exemption Post-Approval Study of NeuRx Diaphragm Pacing System for Amyotrophic Lateral Sclerosis

NCT01605006
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis (ALS)
Interventions
NeuRx Diaphragm Pacing System (DPS)
Device
Lead sponsor
Synapse Biomedical
Industry
Eligibility
21 Years and older
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
11
States / cities
Los Angeles, California • San Francisco, California • Denver, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2020 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional

Physiologic Accelerated Pacing as a Treatment in Patients With Heart Failure With Preserved Ejection Fraction

NCT04546555
View directory record Official record
Conditions
Heart Failure, Diastolic
Interventions
Dual chamber pacemaker, Accelerated Physiologic Pacing, Nocturnal Pacing
Device · Other
Lead sponsor
Daniel L Lustgarten
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Jul 27, 2023 · Synced Jul 21, 2026, 4:41 PM EDT
Completed Not applicable Interventional Results available

Accelerometer Sensing for Micra AV Study

NCT04245345
View directory record Official record
Conditions
AV Block, AV Block Complete, 3rd Degree Heart Block, Complete Heart Block
Interventions
Accelerometer Sensing for Micra AV Study
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
18
States / cities
Stockton, California • Jacksonville, Florida • Leesburg, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Jul 21, 2026, 4:41 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 Jul 21, 2026, 4:41 PM EDT