Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Jul 22, 2026, 11:02 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 159 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Pacemaker Clear all
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 27, 2013 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Results available

Intravascular Ultrasound (IVUS) Imaging During Transvenous Lead Extraction

NCT04055740
View directory record Official record
Conditions
Device Malfunction, ICD, Pacemaker Lead Dysfunction
Interventions
IVUS Imaging
Device
Lead sponsor
University of Chicago
Other
Eligibility
21 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 2, 2024 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Phase 4 Interventional

ULTRA Study for Pacemaker Patients

NCT00133289
View directory record Official record
Conditions
Bradycardia
Interventions
Pacemaker with Automatic Capture
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
950 participants
Timeline
2005 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 9, 2007 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational

Evaluation of CIED "Readers" for Disease Management

NCT03338946
View directory record Official record
Conditions
Pacemaker Ddd, ICD
Interventions
CIED interrogation
Device
Lead sponsor
Edward Hospital
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Naperville, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 17, 2019 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Phase 1 Interventional

Natural History and Results of Dual Chamber (DDD) Pacemaker Therapy of Children With Obstructive Hypertrophic Cardiomyop...

NCT00001396
View directory record Official record
Conditions
Hypertrophic Cardiomyopathy
Interventions
Paragon Pacemaker
Device
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
5 Years to 20 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1993 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 11:02 AM EDT
Recruiting Not applicable Interventional

BIOTRONIK Investigation of the LivIQ Leadless Pacemaker System

NCT07118358
View directory record Official record
Conditions
Leadless Pacemaker, Bradycardia, AV Block, Cardiac Rhythm Disorder
Interventions
LivIQ Leadless Pacemaker System
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
5
States / cities
Ypsilanti, Michigan • New York, New York • Winston-Salem, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Jul 22, 2026, 11:02 AM EDT
Terminated No phase listed Observational

His Bundle Recording From Subclavian Vein

NCT04115735
View directory record Official record
Conditions
Atrial Fibrillation, Congestive Heart Failure
Interventions
Not listed
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years to 105 Years
Enrollment
1 participant
Timeline
2019 – 2020
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 7, 2023 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational

Resynchronization Therapy in Young Patients With and Without CHD

NCT00208806
View directory record Official record
Conditions
Dilated Cardiomyopathy, Pediatric
Interventions
congestive heart failure patients
Other
Lead sponsor
Emory University
Other
Eligibility
1 Day to 18 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 9, 2013 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational

MEDTRONIC ADAPTA, VERSA AND SENSIA nEw3 POST APPROVAL STUDY

NCT01076374
View directory record Official record
Conditions
Arrhythmia, Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
2,927 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
110
States / cities
Birmingham, Alabama • Anchorage, Alaska • Gilbert, Arizona + 107 more
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced Jul 22, 2026, 11:02 AM 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 Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional

Improving Safety of Lead Extraction Procedures by Traction Force Sensing

NCT03842124
View directory record Official record
Conditions
Cardiac Implantable Electronic Device Infection, Cardiovascular Infections
Interventions
Force gauge
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 22, 2022 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Evaluating the Electro Magnetic Interference of Using Tablet and Smart Phone on Leadless Pacemaker (MICRA)

NCT02758210
View directory record Official record
Conditions
Bradycardia, Atrial Tachyarrhythmia
Interventions
Use of a Tablet, Use of a Smart Phone
Device
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
2
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 8, 2017 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational

Common Sensing and Right Ventricular Automatic Capture (COGNATE)

NCT01030705
View directory record Official record
Conditions
Bradycardia, Chronotropic Incompetence
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
5
States / cities
Cedar Rapids, Iowa • Lincoln, Nebraska • Pittsburgh, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2011 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational

St. Jude Medical Product Longevity and Performance (SCORE) Registry

NCT01754064
View directory record Official record
Conditions
Bradycardia, Tachycardia, Heart Disease
Interventions
Cardiac Rhythm Management device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
10,957 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2020
U.S. locations
80
States / cities
Huntsville, Alabama • Mobile, Alabama • Anchorage, Alaska + 72 more
Source: ClinicalTrials.gov public record
Updated May 10, 2021 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Results available

Optimize RV Follow-up Selective Site Pacing Clinical Trial

NCT00949715
View directory record Official record
Conditions
Cardiac Pacing, Right Ventricular Pacing, Left Ventricular Ejection Fraction
Interventions
Medtronic or Vitatron Dual-Chamber Pacemaker, Medtronic SelectSecure 3830 Lead
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
10
States / cities
Des Moines, Iowa • Silver Spring, Maryland • Southfield, Michigan + 7 more
Source: ClinicalTrials.gov public record
Updated Feb 14, 2018 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational Results available

ProMRI Study of the Entovis Pacemaker System (Phase B)

NCT02009696
View directory record Official record
Conditions
Magnetic Resonance Imaging (MRI); Cardiac Pacing
Interventions
Patients with a ProMRI Pacemaker System, Magnetic Resonance Imaging (MRI) scan
Device · Other
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
32
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Concord, California + 28 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2015 · Synced Jul 22, 2026, 11:02 AM 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 22, 2026, 11:02 AM EDT
Completed No phase listed Observational

Placement of Permanent Pacemaker Study

NCT00512161
View directory record Official record
Conditions
Cardiac Surgical Procedures
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 18, 2017 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional Results available

Randomized Study of the Use of Warfarin During Pacemaker or ICD Implantation in Patients Requiring Long Term Anticoagulation

NCT00721136
View directory record Official record
Conditions
Bradycardia, Tachycardia, Atrial Fibrillation, Valvular Heart Disease
Interventions
continue warfarin through the procedure, Hold warfarin, Warfarin held with heparin transition.
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 99 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
2
States / cities
Baltimore, Maryland • Columbia, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Jul 22, 2026, 11:02 AM EDT
Recruiting Not applicable Interventional

Functional Outcomes in CondUction System Pacing and Right Ventricular Synchrony (FOCUS-Right)

NCT06601322
View directory record Official record
Conditions
Left Branch Bundle Block, RV - Right Ventricular Abnormality
Interventions
Pacemaker Interrogation and Electrocardiogram (ECG):, Cardiopulmonary Exercise Test (CPET) and Exercise Stress Cardiac Magnetic Resonance (ExeCMR, Continuous pacemaker telemetry (CPT)
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Jul 22, 2026, 11:02 AM EDT
Completed Not applicable Interventional

Study for Atrial Fibrillation Reduction (SAFARI)

NCT00267137
View directory record Official record
Conditions
Atrial Fibrillation, Bradycardia
Interventions
Pacing Algorithms
Device
Lead sponsor
Medtronic Cardiac Ablation Solutions
Industry
Eligibility
Not listed
Enrollment
540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
34
States / cities
Yuma, Arizona • Fayetteville, Arkansas • Fort Smith, Arkansas + 31 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2025 · Synced Jul 22, 2026, 11:02 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 13, 2023 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational Results available

Registry of Patients for MRI With Non-MRI Conditional Pacemakers and ICD Non-MRI Conditional Pacemakers and ICD

NCT02318550
View directory record Official record
Conditions
MRI Scans, Magnetic Resonance Imaging, Pacemaker, Implantable Cardioverter Defibrillator
Interventions
MRI Scan
Other
Lead sponsor
Lancaster General Hospital
Other
Eligibility
18 Years and older
Enrollment
262 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 30, 2021 · Synced Jul 22, 2026, 11:02 AM EDT
Completed No phase listed Observational

Safety and Clinical Outcomes of Magnetic Resonance Imaging in Patients With Cardiac Implantable Electrical Devices

NCT03016429
View directory record Official record
Conditions
Cardiac Disease
Interventions
Not listed
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years and older
Enrollment
1,169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 19, 2022 · Synced Jul 22, 2026, 11:02 AM EDT