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ClinicalTrials.gov public records Last synced Oct 25, 2026, 2:32 PM EDT

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Showing 145–168 of 235 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Pacemaker Clear all
Completed Phase 4 Interventional

Apixaban for the Reduction of Thrombo-Embolism in Patients With Device-Detected Sub-Clinical Atrial Fibrillation

NCT01938248
View directory record Official record
Conditions
Atrial Fibrillation, Stroke
Interventions
Apixaban, aspirin
Drug
Lead sponsor
Population Health Research Institute
Other
Eligibility
55 Years and older
Enrollment
4,012 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
23
States / cities
Mesa, Arizona • Little Rock, Arkansas • Larkspur, California + 20 more
Source: ClinicalTrials.gov public record
Updated Nov 15, 2023 · Synced Oct 25, 2026, 2:32 PM EDT
Completed Not applicable Interventional Results available

Efficacy Study of Pacemakers to Treat Slow Heart Rate in Patients With Heart Failure

NCT02145351
View directory record Official record
Conditions
Heart Failure With a Preserved Ejection Fraction, Heart Failure, Diastolic, Chronotropic Incompetence
Interventions
Rate adaptive atrial pacing using a dual-chamber pacemaker, Pacemaker system will be implanted but set to Pacing Off.
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 5, 2023 · Synced Oct 25, 2026, 2:32 PM 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 10, 2013 · Synced Oct 25, 2026, 2:32 PM EDT
Completed Not applicable Interventional Results available

AV Delay Optimization vs. Intrinsic Conduction in Pacemaker Patients With Long PR Intervals

NCT02154750
View directory record Official record
Conditions
Atrioventricular Block, Sick Sinus Syndrome, Symptomatic Bradycardia, Cardiac Arrhythmia
Interventions
Long, fixed AV delay, Short, optimized AV delay
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 24, 2025 · Synced Oct 25, 2026, 2:32 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

MR Evaluation of Cerebrospinal Fluid (CSF) Dynamics

NCT04099823
View directory record Official record
Conditions
Hydrocephalus, Alzheimer Disease
Interventions
MRI screening form, Urine pregnancy test, MR brain
Other · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Oct 25, 2026, 2:32 PM 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 26, 2018 · Synced Oct 25, 2026, 2:32 PM EDT
Completed No phase listed Observational

Long-Term Results of DDD Pacing in Obstructive Hypertrophic Cardiomyopathy

NCT00001530
View directory record Official record
Conditions
Cardiomyopathy, Hypertrophic
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 25, 2026, 2:32 PM EDT
Withdrawn No phase listed Observational

Effect of Dexmedetomidine on Pacemaker Function Following Cardiac Surgery

NCT02709200
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
Dexmedetomidine
Drug
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
6 Months and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 28, 2019 · Synced Oct 25, 2026, 2:32 PM 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 2, 2017 · Synced Oct 25, 2026, 2:32 PM EDT
Terminated Not applicable Interventional Results available

Optimize RV Selective Site Pacing Clinical Trial

NCT00422669
View directory record Official record
Conditions
Cardiac Pacing, Artificial, Cardiac Pacemaker, Artificial
Interventions
Medtronic Dual-Chamber Pacemaker, Medtronic SelectSecure 3830 Lead
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
16
States / cities
Bridgeport, Connecticut • Clearwater, Florida • Hudson, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Jan 31, 2013 · Synced Oct 25, 2026, 2:32 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 14, 2009 · Synced Oct 25, 2026, 2:32 PM EDT
Active, not recruiting No phase listed Observational

Micra Transcatheter Pacing System Post-Approval Registry

NCT02536118
View directory record Official record
Conditions
Bradycardia
Interventions
Micra Transcatheter Pacing System
Device
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
3,100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
52
States / cities
Birmingham, Alabama • Los Angeles, California • Redwood City, California + 49 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Oct 25, 2026, 2:32 PM EDT
Completed No phase listed Observational

CRM and Fusion Beats: Effects of Progressive Fusion on Intra-left Ventricular Mechanical Function

NCT00610896
View directory record Official record
Conditions
Cardiomyopathy
Interventions
Not listed
Lead sponsor
Essentia Health
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Duluth, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 2, 2011 · Synced Oct 25, 2026, 2:32 PM EDT
Completed No phase listed Observational

F18-MHF: Implants-Associated Infection Detection

NCT05889286
View directory record Official record
Conditions
Knee Disease, Knee Infection
Interventions
[F-18]MHF
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated May 28, 2026 · Synced Oct 25, 2026, 2:32 PM EDT
Completed Phase 2 Interventional

Efficacy and Safety Study of an Antiarrhythmic Drug to Treat Atrial Fibrillation in Patients With Pacemakers

NCT00389792
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
ATI-2042, ATI-2042 200 mg
Drug
Lead sponsor
ARYx Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
27
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Tucson, Arizona + 24 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2009 · Synced Oct 25, 2026, 2:32 PM 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 25, 2026, 2:32 PM 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 25, 2026, 2:32 PM EDT
Terminated Not applicable Interventional Results available

APPROPRIATE - Rate Adaptive Pacing Sensor

NCT00757666
View directory record Official record
Conditions
Heart Diseases
Interventions
Rate adaptive pacemaker
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
566 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
2
States / cities
Jonesboro, Arkansas • Davenport, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Oct 25, 2026, 2:32 PM EDT
Terminated No phase listed Observational

Infant Medical Records: Case Report Proposal

NCT00268060
View directory record Official record
Conditions
Congenital Disorders
Interventions
Not listed
Lead sponsor
Children's Healthcare of Atlanta
Other
Eligibility
Up to 21 Years · Male only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated May 7, 2007 · Synced Oct 25, 2026, 2:32 PM EDT
Completed No phase listed Observational Results available

TYRX™ Envelope for Prevention of Infection Following Replacement With a CRT or ICD

NCT01043705
View directory record Official record
Conditions
Cardiac Implantable Electronic Device Infection
Interventions
Not listed
Lead sponsor
TYRX, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,262 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
52
States / cities
Birmingham, Alabama • Decatur, Alabama • Florence, Alabama + 44 more
Source: ClinicalTrials.gov public record
Updated Dec 24, 2015 · Synced Oct 25, 2026, 2:32 PM EDT
Terminated Phase 4 Interventional Results available

Effects of Dronedarone on Atrial Fibrillation Burden in Subjects With Permanent Pacemakers

NCT01135017
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
Dronedarone, Placebo (for Dronedarone)
Drug
Lead sponsor
Sanofi
Industry
Eligibility
21 Years and older
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
92
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 79 more
Source: ClinicalTrials.gov public record
Updated Apr 11, 2013 · Synced Oct 25, 2026, 2:32 PM EDT
Terminated Not applicable Interventional Results available

Left Bundle Area Versus Selective His Bundle Pacing

NCT04093414
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction, Atrioventricular Block
Interventions
Select Secure pacing lead
Device
Lead sponsor
David Haines, MD
Other
Eligibility
19 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Royal Oak, Michigan • Troy, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 17, 2022 · Synced Oct 25, 2026, 2:32 PM EDT
Completed Not applicable Interventional Results available

Multi-Channel Gastric Electrical Stimulation for the Treatment of Gastroparesis

NCT00595621
View directory record Official record
Conditions
Gastric Stasis
Interventions
Enterra Multi-Channel Phased Gastric Pacemaker (MGP-1)
Device
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 70 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 31, 2019 · Synced Oct 25, 2026, 2:32 PM EDT
Completed Not applicable Interventional

Personalized Pacing: A New Paradigm for Patients With Diastolic Dysfunction or Heart Failure With Preserved Ejection Fraction

NCT04721314
View directory record Official record
Conditions
Pacemaker, Diastolic Dysfunction, Diastolic Heart Failure
Interventions
Adjustment of lower rate limit, Maintenance of lower rate limit
Device
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Feb 9, 2022 · Synced Oct 25, 2026, 2:32 PM EDT