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ClinicalTrials.gov public records Last synced Oct 21, 2026, 7:59 AM EDT

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Showing 97–120 of 235 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: pacemaker Clear all
Completed No phase listed Observational

LV Dysfunction Following Pacemaker Placement

NCT03850808
View directory record Official record
Conditions
Heart Failure
Interventions
Not listed
Lead sponsor
Oregon Health and Science University
Other
Eligibility
Not listed
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 25, 2019 · Synced Oct 21, 2026, 7:59 AM 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 Oct 21, 2026, 7:59 AM EDT
Completed No phase listed Observational

TRENDS: A Prospective Study of the Clinical Significance of Atrial Arrhythmias Detected by Implanted Device Diagnostics

NCT00279981
View directory record Official record
Conditions
Atrial Fibrillation, Stroke, Heart Failure
Interventions
Diagnostic
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
3,100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
92
States / cities
Mesa, Arizona • Tucson, Arizona • Fountain Valley, California + 89 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2008 · Synced Oct 21, 2026, 7:59 AM EDT
Terminated No phase listed Observational

Study of the Loss of AV Synchrony at Maximum Exercise

NCT03859167
View directory record Official record
Conditions
Exercise, Pacemaker, Blood Pressure
Interventions
Stress Test
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
9 participants
Timeline
2019 – 2023
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 14, 2023 · Synced Oct 21, 2026, 7:59 AM 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 28, 2023 · Synced Oct 21, 2026, 7:59 AM EDT
Completed Not applicable Interventional

Janus Feasibility Study

NCT03985527
View directory record Official record
Conditions
Sleep Apnea Syndromes
Interventions
Transvenous nerve stimulation
Device
Lead sponsor
Respicardia, Inc.
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
3
States / cities
Winston-Salem, North Carolina • Columbus, Ohio • Bryn Mawr, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 30, 2026 · Synced Oct 21, 2026, 7:59 AM 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 5, 2007 · Synced Oct 21, 2026, 7:59 AM EDT
Completed Not applicable Interventional

Conduction Disease After Transcatheter Aortic Valve Replacement

NCT04489095
View directory record Official record
Conditions
Aortic Stenosis, Heart Block, Aortic Insufficiency
Interventions
Electrophysiology Study
Diagnostic Test
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 14, 2022 · Synced Oct 21, 2026, 7:59 AM EDT
Completed Phase 2 Interventional

A Comparison of Two Treatments: Pacemaker and Percutaneous Transluminal Septal Ablation for Hypertrophic Cardiomyopathy

NCT00001894
View directory record Official record
Conditions
Hypertrophic Cardiomyopathy
Interventions
pacemaker implantation, percutaneous transluminal septal ablation (PTSA)
Procedure
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 4, 2006 · Synced Oct 21, 2026, 7:59 AM EDT
Completed Not applicable Interventional Results available

Aveir DR i2i Study

NCT05252702
View directory record Official record
Conditions
Cardiac Pacemaker, Artificial, Cardiac Rhythm Disorder, Bradycardia
Interventions
Aveir DR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
54
States / cities
Scottsdale, Arizona • Jonesboro, Arkansas • Little Rock, Arkansas + 44 more
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Oct 21, 2026, 7:59 AM EDT
Active, not recruiting No phase listed Observational

Longitudinal Coverage With Evidence Development Study on Micra Leadless Pacemakers

NCT03039712
View directory record Official record
Conditions
Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
37,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2029
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 21, 2026, 7:59 AM EDT
Completed No phase listed Observational

Evaluation of EMI in Patients With Micra Leadless Pacemaker

NCT03508128
View directory record Official record
Conditions
Electromagnetic Interference
Interventions
surgical procedure
Other
Lead sponsor
Edward-Elmhurst Health System
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Naperville, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 21, 2018 · Synced Oct 21, 2026, 7:59 AM EDT
Completed Not applicable Interventional Results available

ECG Belt to Assess Electrical Synchronization

NCT04583709
View directory record Official record
Conditions
Bradycardia, Heart Failure
Interventions
ECG Belt
Device
Lead sponsor
Pugazhendhi Vijayaraman
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Wilkes-Barre, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 22, 2022 · Synced Oct 21, 2026, 7:59 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Exploring the Modulatory Role of Sex Hormones Along the Neuromechanical Axis in Females

NCT03947684
View directory record Official record
Conditions
Role of Sex Hormones Along the Neuromechanical Axis
Interventions
Not listed
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 39 Years
Enrollment
102 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Oct 21, 2026, 7:59 AM EDT
Active, not recruiting Not applicable Interventional

The Boston Pace Study

NCT05869500
View directory record Official record
Conditions
Left Bundle Branch Area Pacing
Interventions
Left Bundle Branch Area Pacemaker, Right Ventricular Pacemaker
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 21, 2026, 7:59 AM EDT
Not listed Phase 4 Interventional

Effect of Ranolazine on Valvular Disease in Patients With Pacemakers

NCT01979965
View directory record Official record
Conditions
Ischemic Mitral Regurgitation
Interventions
Ranolazine (Active drug), Placebo
Drug
Lead sponsor
University Cardiology
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 8, 2013 · Synced Oct 21, 2026, 7:59 AM 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 13, 2020 · Synced Oct 21, 2026, 7:59 AM EDT
Completed Not applicable Interventional Results available

Deep Brain Stimulation for the Treatment of Traumatic Brain Injury

NCT02881151
View directory record Official record
Conditions
TBI (Traumatic Brain Injury)
Interventions
Deep brain stimulation
Device
Lead sponsor
Jaimie M. Henderson
Other
Eligibility
22 Years to 60 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 23, 2022 · Synced Oct 21, 2026, 7:59 AM EDT
Completed Not applicable Interventional Results available

A Trial Assessing The Association Between Type Of Local Anesthesia Treatment And Postoperative Pain In Patients In Having Undergone Arrhythmia Surgery

NCT01300377
View directory record Official record
Conditions
Post-operative Pain
Interventions
Bupivacaine / Lidocaine, Lidocaine
Drug
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Oct 21, 2026, 7:59 AM EDT
Completed No phase listed Observational

Ensure Cardiac Resynchronization Therapy Study

NCT00291564
View directory record Official record
Conditions
Heart Failure
Interventions
Cardiac Resynchronization Therapy Device
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
430 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
32
States / cities
Birmingham, Alabama • Newport Beach, California • Trumbull, Connecticut + 29 more
Source: ClinicalTrials.gov public record
Updated Dec 21, 2007 · Synced Oct 21, 2026, 7:59 AM EDT
Completed No phase listed Observational

VIBRANT Registry: Value of Information Based From Pacemaker Recordings and New Technologies

NCT00294034
View directory record Official record
Conditions
Pacemaker, Bradycardia
Interventions
Pacemaker
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
950 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
27
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • North Little Rock, Arkansas + 24 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2007 · Synced Oct 21, 2026, 7:59 AM EDT
Completed Not applicable Interventional

PITA-HF: Feasibility, Safety, and Tolerability

NCT04159454
View directory record Official record
Conditions
Heart Failure, Dilated Cardiomyopathy
Interventions
PITA
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 14, 2023 · Synced Oct 21, 2026, 7:59 AM EDT
Active, not recruiting No phase listed Observational

Longitudinal Coverage With Evidence Development Study on Micra AV Leadless Pacemakers (Micra AV CED)

NCT04235491
View directory record Official record
Conditions
Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
37,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2029
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 21, 2026, 7:59 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

Specialized Pacing for Patients With Congenital Heart Disease

NCT03361189
View directory record Official record
Conditions
Congenital Heart Disease, Bradycardia Sinus
Interventions
Closed loop stimulation, Standard rate response
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
14 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 20, 2023 · Synced Oct 21, 2026, 7:59 AM EDT